Tootfinder

Precise boron abundance in a sample of metal-poor stars from far-ultraviolet lines
Monique Spite, Beatriz Barbuy, Kefeng Tan
https://arxiv.org/abs/2510.11594 https://

Precise boron abundance in a sample of metal-poor stars from far-ultraviolet lines
The light elements beryllium (Be; $Z=4$) and boron (B; $Z=5$) are mainly produced by spallation reactions between cosmic rays and carbon (C; $Z=6$), nitrogen (N; $Z=7$), and oxygen (O; $Z=8$) nuclei. Only traces of Be or B would have been produced in the Big Bang, but there could be a contribution from the $ν$-process in type II supernovae. Their abundances at very low metallicities have been debated in the literature, with the aim of understanding their origin. Our aim is to derive the bo…

Heck the mushrooms are out in abundance this year; they're really going for it all over.
Plus: Bonus confused dandelion - someone tell it, it's October.
#fungi

JWST Spectroscopy of SN Ia 2022aaiq and 2024gy: Evidence for Enhanced Central Stable Ni Abundance and a Deflagration-to-Detonation Transition
Lindsey A. Kwok, Chang Liu, Saurabh W. Jha, St\'ephane Blondin, Conor Larison, Adam A. Miller, Mi Dai, Ryan J. Foley, Alexei V. Filippenko, Moira Andrews, Jennifer E. Andrews, Katie Auchettl, Carles Badenes, Thomas G. Brink, Kyle W. Davis, Andreas Fl\"ors, Llu\'is Galbany, Estefania Padilla Gonzalez, D. Andrew Howell, Sahana Kumar, R…

JWST Spectroscopy of SN Ia 2022aaiq and 2024gy: Evidence for Enhanced Central Stable Ni Abundance and a Deflagration-to-Detonation Transition
We present optical + near-infrared (NIR) + mid-infrared (MIR) observations of the normal Type~Ia supernovae (SN Ia) 2022aaiq and 2024gy in the nebular phase, continuously spanning 0.35--28 microns. Medium-resolution JWST spectroscopy reveals novel narrow ($v_{\mathrm{FWHM}}<1500$ km s$^{-1}$) [Ni II] 1.94 and 6.64 micron cores in both events. The MIR [Ni II] 6.64 micron line exhibits a distinct narrow core atop a broader base, indicating a central enhancement of stable Ni. This structure points…

If I were to build a new national party in the US or EU, it would be abundance-based—and begin with a merciless assault on administrative burden and bureaucratic disentitlement. @ezraklein is right that bureaucracy blocks progress, but it also disenfranchises.

Invisible Languages of the LLM Universe
Saurabh Khanna, Xinxu Li
https://arxiv.org/abs/2510.11557 https://arxiv.org/pdf/2510.11557

Invisible Languages of the LLM Universe
Large Language Models are trained on massive multilingual corpora, yet this abundance masks a profound crisis: of the world's 7,613 living languages, approximately 2,000 languages with millions of speakers remain effectively invisible in digital ecosystems. We propose a critical framework connecting empirical measurements of language vitality (real world demographic strength) and digitality (online presence) with postcolonial theory and epistemic injustice to explain why linguistic inequality i…

Effect of stochastic kicks on primordial black hole abundance and mass via the compaction function
Sami Raatikainen, Syksy Rasanen, Eemeli Tomberg
https://arxiv.org/abs/2510.09303

Effect of stochastic kicks on primordial black hole abundance and mass via the compaction function
We study stochastic effects in viable ultra-slow-roll inflation models that produce primordial black holes. We consider asteroid, solar, and supermassive black hole seed masses. In each case, we simulate $10^8$ patches of the universe that may collapse into PBHs. In every patch, we follow $4\times10^4$ momentum shells to construct its spherically symmetric profile from first principles, without introducing a window function. We include the effects of critical collapse and the radiation era tran…

🛟 The Abundance Movement’s Blind Spot
#climatechange

The Abundance Movement’s Blind Spot
What if Americans care more about the cost of climate disasters than carbon-free energy?

That's so Retro: The Gaia-Sausage-Enceladus Merger Trajectory as the Origin of the Chemical Abundance Bimodality in the Milky Way Disk
James W. Johnson, Diane K. Feuillet, Ana Bonaca, Danielle de Brito Silva
https://arxiv.org/abs/2510.08688

That's so Retro: The Gaia-Sausage-Enceladus Merger Trajectory as the Origin of the Chemical Abundance Bimodality in the Milky Way Disk
The Milky Way (MW) is thought to have experienced a $\sim$3:1 mass-ratio merger event near redshift $z\sim2$ with a significantly retrograde trajectory. This now-disrupted dwarf galaxy is commonly known as the Gaia-Sausage-Enceladus (GSE). In this paper, we investigate the impact of the GSE merger trajectory on metal abundances in the MW disk. We construct numerical models of Galactic chemical evolution (GCE) incorporating radial gas flows to account for angular momentum transport during the me…

WIRED, 2004: The long tail https://www.wired.com/2004/10/tail/ Will The vOICe vision BCI cover more of the long tail of blindness cases than brain implants, retinal implants and optogenetics combined? Think of developing countries, types of blindness, device lifetime, etc. Economy of abundance vs Pareto…

The Long Tail
Forget squeezing millions from a few megahits at the top of the charts. The future of entertainment is in the millions of niche markets at the shallow end of the bitstream.

Non-algebraicity of non-abundant foliations and abundance for adjoint foliated structures
Jihao Liu, Zheng Xu
https://arxiv.org/abs/2510.04419 https://arxi…

Non-algebraicity of non-abundant foliations and abundance for adjoint foliated structures
Assuming the abundance conjecture in dimension $d$, we establish a non-algebraicity criterion of foliations: any log canonical foliation of rank $\le d$ with $ν\neqκ$ is not algebraically integrable, answering question of Ambro--Cascini--Shokurov--Spicer. Under the same hypothesis, we prove abundance for klt algebraically integrable adjoint foliated structures of dimension $\le d$ and show the existence of good minimal models or Mori fiber spaces. In particular, when $d=3$, all these results …

Local energy communities meet public EV charging in Burgenland, Austria 🇦🇹.
Discounted EV charging is available at times when there is an abundance of wind and solar energy, reducing the public charging price to €0.26/kWh.
https://www.fcbe.at/laden/

Rewiring Development in Brain Segmentation: Leveraging Adult Brain Priors for Enhancing Infant MRI Segmentation
Alemu Sisay Nigru, Michele Svanera, Austin Dibble, Connor Dalby, Mattia Savardi, Sergio Benini
https://arxiv.org/abs/2510.09306

Rewiring Development in Brain Segmentation: Leveraging Adult Brain Priors for Enhancing Infant MRI Segmentation
Accurate segmentation of infant brain MRI is critical for studying early neurodevelopment and diagnosing neurological disorders. Yet, it remains a fundamental challenge due to continuously evolving anatomy of the subjects, motion artifacts, and the scarcity of high-quality labeled data. In this work, we present LODi, a novel framework that utilizes prior knowledge from an adult brain MRI segmentation model to enhance the segmentation performance of infant scans. Given the abundance of publicly …

ChloroScan: Recovering plastid genome bins from metagenomic data
Yuhao Tong, Vanessa Rossetto Marcelino, Robert Turnbull, Heroen Verbruggen
https://arxiv.org/abs/2510.10950 http…

ChloroScan: Recovering plastid genome bins from metagenomic data
Genome-resolved metagenomics has contributed largely to discovering prokaryotic genomes. When applied to microscopic eukaryotes, challenges such as the high number of introns and repeat regions found in nuclear genomes have hampered the mining and discovery of novel protistan lineages. Organellar genomes are simpler, smaller, have higher abundance than their nuclear counterparts and contain valuable phylogenetic information, but are yet to be widely used to identify new protist lineages from me…

Variation of the disk thickness across ice bands: A method to determine ice abundances in highly inclined protoplanetary disks
Laurine Martinien, Gaspard Duch\^ene, Fran\c{c}ois M\'enard, Karl R. Stapelfeldt, Ryo Tazaki, Jennifer B. Bergner, Emmanuel Dartois, Jennifer A. Noble, William Thompson
https://arxiv.org/abs/2510.11359

Variation of the disk thickness across ice bands: A method to determine ice abundances in highly inclined protoplanetary disks
The James Webb Space Telescope provides unprecedented information to study ices in protoplanetary disks. However, the saturation of ice bands in highly inclined disks hinders the measurement of ice abundances using classical spectroscopy. This is unfortunate as the presence and more importantly abundance of ices plays a key role in, e.g., the evolution of dust (because it modifies the sticking properties) and the composition of planetesimals and exoplanetary atmospheres. To overcome this issue …

Dark matter Simplified models in the Resonance Region
Mattia Di Mauro, Bohan Xie
https://arxiv.org/abs/2510.08677 https://arxiv.org/pdf/2510.08677

Dark matter Simplified models in the Resonance Region
The particle-physics nature of dark matter (DM) remains one of the central open questions in modern physics. A widely used framework to investigate DM properties is provided by simplified models (DMSimps), which extend the Standard Model with a DM particle and a mediator that connects the visible and dark sectors. Much of the DMSimps parameter space is already constrained by direct and indirect detection, collider searches, and the measured DM relic abundance. We show, however, that the resonan…

Radiant Silvergun: an abundance of weapons
I'm not great at scrolling shooters, though I enjoy their spectacle and the panic they induce as the number of bullets increases. Radiant Silvergun not only has a great many bullets, it also has a great many weapons, all but one of which I forget to use. This makes things very tricky indeed, especially when you're supposed to be firing around corners using a homing missile and I'm stuck firing upwards like a lemon.

🇺🇦 Auf radioeins läuft...
CATT:
🎵 Jungle Of Abundance
#NowPlaying #CATT
https://cattmusic.bandcamp.com/track/jungle-of-abundance
https://open.spotify.com/track/7cDL31s4Hws6Nvp85ymghW

Well, that was interesting and curious. I clearly have no idea how anything works any more (not news, even to me). In an abundance of caution, I just changed my GMail password yet again, and two seconds later Dropbox said I was signed out. Maybe a coincidence but a) I've never been signed out of Dropbox like that before and b) the timing is a smoking gun.
It's all so creepy and invasive these days.

Fascinating article on the abundance of medical reference books & notes on remedies in medieval England:
https://specialcollections-blog.lib.cam.ac.uk/?p=30906
🧵 1/4

Abundance vs. Populism: A Former White House Aide Wants Democrats to Have It Both Ways (Victoria Guida/Politico)
https://www.politico.com/news/magazine/2025/10/22/abundance-vs-populism-a-former-white-house-aide-wants-democrats-to-have-it-both-ways-00617550
http://www.memeorandum.com/251022/p33#a251022p33

Metals versus Non-metals: Chemical Evolution of Hydrogen and Helium Isotopes in the Milky Way
James W. Johnson, Miqaela K. Weller, Ryan J. Cooke
https://arxiv.org/abs/2510.08689

Metals versus Non-metals: Chemical Evolution of Hydrogen and Helium Isotopes in the Milky Way
Star formation drives changes in the compositions of galaxies, fusing H and He into heavier nuclei. This paper investigates the differences in abundance evolution between metal and non-metal isotopes using recent models of Galactic chemical evolution appropriate for the thin disk epoch. A strong degeneracy arises between metal yields from stellar populations and the mean Galactocentric radial velocity of the interstellar medium (ISM). Similar metallicities arise when increases (decreases) in me…

Abundance Pattern Fitting with Bayesian Inference: Constraining First Stars' Properties and Their Explosion Mechanism with Extremely Metal-poor Stars
Ruizheng Jiang, Haining Li, Gang Zhao, Qianfan Xing, Wenyu Xin
https://arxiv.org/abs/2510.05712

Abundance Pattern Fitting with Bayesian Inference: Constraining First Stars' Properties and Their Explosion Mechanism with Extremely Metal-poor Stars
The abundance patterns of extremely metal-poor stars preserve a fossil record of the Universe's earliest chemical enrichment by the supernova explosions from the evolution of first generation of stars, also referred to as Population III (or Pop III). By applying Bayesian inference to the analysis of abundance patterns of these ancient stars, this study presents a systematic investigation into the properties and explosion mechanism of Pop III stars. We apply NLTE corrections to enhance the relia…

Axion Perturbations: A General Analytical Treatment
Itamar J. Allali, Priyesh Chakraborty, JiJi Fan, Matthew Reece
https://arxiv.org/abs/2510.07371 https://

Axion Perturbations: A General Analytical Treatment
Cosmological data provides us two key constraints on dark matter (DM): it must have a particular abundance, and it must have an adiabatic spectrum of density perturbations in the early universe. Many different cosmological scenarios have been proposed that establish the abundance of axion DM in qualitatively different ways. In this paper we emphasize that, despite this variety of backgrounds, the perturbations in axion DM can be understood from universal principles. How does a feebly interactin…

#abundance g…

Extreme NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS
Damien Hutsem\'ekers, Jean Manfroid, Emmanu\"el Jehin, Cyrielle Opitom, Michele Bannister, Juan Pablo Carvajal, Rosemary Dorsey, K Aravind, Baltasar Luco, Brian Murphy, Thomas H. Puzia, Rohan Rahatgaonkar
https://arxiv.org/abs/2509.26053

Extreme NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS
Emission lines of FeI and NiI are commonly found in the coma of solar system comets, even at large heliocentric distances. These atoms are most likely released from the surface of the comet's nucleus or from a short-lived parent. The presence of these lines in cometary spectra is unexpected because the surface blackbody equilibrium temperature is too low to allow the sublimation of refractory minerals containing these metals. These lines were also found in the interstellar comet 2I/Borisov whic…

Automated Gating for Flow Cytometry Data Using a Kernel-Smoothed EM Algorithm
Farhad de Sousa, Fran\c{c}ois Ribalet, Jacob Bien
https://arxiv.org/abs/2510.06051 https://

Automated Gating for Flow Cytometry Data Using a Kernel-Smoothed EM Algorithm
Phytoplankton are microscopic algae responsible for roughly half of the world's photosynthesis that play a critical role in global carbon cycles and oxygen production, and measuring the abundance of their subtypes across a wide range of spatiotemporal scales is of great relevance to oceanography. High-frequency flow cytometry is a powerful technique in which oceanographers at sea can rapidly record the optical properties of tens of thousands of individual phytoplankton cells every few minutes. …

Abundance of strontium in the Galactic globular cluster 47 Tuc
E. Kolomiecas, A. Ku\v{c}inskas, J. Klevas, V. Dobrovolskas
https://arxiv.org/abs/2510.04722 https://

Abundance of strontium in the Galactic globular cluster 47 Tuc
Aims. We have determined Sr abundance in a sample of 31 red giant branch stars located in the Galactic globular cluster 47 Tuc with the aim to identify potential differences in the Sr abundance between first population (1P, Na-poor) and second population (2P, Na-rich) stars. Methods. We derived the Na and Sr abundances from the archival spectra obtained with the UVES spectrograph. To do this, we used 1D ATLAS9 model atmospheres and a 1D local thermodynamic equilibrium spectral synthesis method.…

Virtual homological torsion: abundance versus growth in books of $I$-bundles
Jonathan Fruchter
https://arxiv.org/abs/2509.22052 https://arxiv.org/pdf/2509.…

Virtual homological torsion: abundance versus growth in books of $I$-bundles
Let $\mathcal{B}$ be a book of $I$-bundles, all of whose pages are surfaces of negative Euler characteristic. In this short note, we prove that torsion in the first homology of $\mathcal{B}$ grows subexponentially in the index along any exhausting tower of regular finite-sheeted covers. By contrast, recent work of Ascari and the author shows that, apart from the obvious exceptions, $\mathcal{B}$ has abundant virtual homological torsion, which can grow exponentially along exhausting towers of no…

Bridging the Synthesizability Gap in Perovskites by Combining Computations, Literature Data, and PU Learning
Rushik Desai, Junyeong Ahn, Alejandro Strachan, Arun Mannodi-Kanakkithodi
https://arxiv.org/abs/2510.06166

Bridging the Synthesizability Gap in Perovskites by Combining Computations, Literature Data, and PU Learning
Among emerging energy materials, halide and chalcogenide perovskites have garnered significant attention over the last decade owing to the abundance of their constituent species, low manufacturing costs, and their highly tunable composition-structure-property space. Navigating the vast perovskite compositional landscape is possible using density functional theory (DFT) computations, but they are not easily extended to predictions of the synthesizability of new materials and their properties. As…

The Serviceberry – Robin Wall Kimmerer
https://emergencemagazine.org/essay/the-serviceberry/

The Serviceberry: An Economy of Abundance – Robin Wall Kimmerer
As Robin Wall Kimmerer harvests serviceberries alongside the birds, she considers the ethic of reciprocity that lies at the heart of the gift economy.

"‘A mythical place’: how a Melbourne sewage farm became a haven for 300 species of birds"
#Australia #Birds #Animals

Marc Benioff apologizes for saying Trump should send the National Guard to SF, says the comments were made out of "an abundance of caution" around Dreamforce (Ari Levy/CNBC)
https://www.cnbc.com/2025/10/17/benioff-trump-national-guard-sf.html

Salesforce CEO apologizes for saying Trump should send National Guard to San Francisco
In a post on X, Salesforce CEO Marc Benioff said he regrets comments he made in support of President Trump sending federal troops to San Francisco.

Tracing Planetary Accretion in a 3 Gyr-old Hydrogen-Rich White Dwarf: The Extremely Polluted Atmosphere of LSPM J0207 3331
\'Erika Le Bourdais, Patrick Dufour, Carl Melis, Beth L. Klein, Laura K. Rogers, Antoine B\'edard, John Debes, Ashley Messier, Alycia J. Weinberger, Siyi Xu
https://arxiv.org/abs/2510.08676

Tracing Planetary Accretion in a 3 Gyr-old Hydrogen-Rich White Dwarf: The Extremely Polluted Atmosphere of LSPM J0207+3331
We report the detection of 13 heavy elements (Na, Mg, Al, Si, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, and Sr) in the photosphere of LSPM J0207+3331, a ~3 Gyr old hydrogen-rich white dwarf with an effective temperature comparable to that of the Sun. Upper limits on carbon, obtained through the absence of molecular CH, suggest accretion from a carbon-volatile-depleted source. The accreted parent body exhibits slight deficits of Mg and Si relative to Fe but otherwise bulk Earth-like abundance patterns; a …

Self-Interacting Sub-GeV Dark Matter with Strong MeV Gamma-ray
Yu Watanabe
https://arxiv.org/abs/2510.05630 https://arxiv.org/pdf/2510.05630

Self-Interacting Sub-GeV Dark Matter with Strong MeV Gamma-ray
Sub-GeV dark matter (DM) with $s$-channel resonant self-scattering provides a promising framework for addressing small-scale structure problems. However, models that also account for the observed relic abundance through the same resonance are strongly constrained by current $γ$-ray observations, since the associated signals are significantly enhanced. To overcome this limitation, we propose a framework in which the relic abundance and self-scattering are governed independently by two distinct …

The challenging first direct measurement of the 65 keV resonance strength in the $^{17}$O(p,$\gamma$)$^{18}$F reaction at LUNA
D. Piatti, LUNA Collaboration
https://arxiv.org/abs/2510.04597

The challenging first direct measurement of the 65 keV resonance strength in the $^{17}$O(p,$γ$)$^{18}$F reaction at LUNA
A precise determination of the proton capture rates on oxygen is mandatory to predict the abundance ratios of oxygen isotopes in a stellar environment where the hydrogen burning is active. The 17O(p,γ)18F reaction, in particular, plays a crucial role in AGB nucleosynthesis as well as in explosive hydrogen burning occurring in novae and type I supernovae. At the temperature of interest for the former scenario (from 20 MK to 80 MK) the main contribution to the astrophysical reaction rate comes f…

🇺🇦 Auf radioeins läuft...
CATT:
🎵 Jungle Of Abundance
#NowPlaying #CATT
https://cattmusic.bandcamp.com/track/jungle-of-abundance
https://open.spotify.com/track/7cDL31s4Hws6Nvp85ymghW

Depth Edge Alignment Loss: DEALing with Depth in Weakly Supervised Semantic Segmentation
Patrick Schmidt, Vasileios Belagiannis, Lazaros Nalpantidis
https://arxiv.org/abs/2509.17702

Depth Edge Alignment Loss: DEALing with Depth in Weakly Supervised Semantic Segmentation
Autonomous robotic systems applied to new domains require an abundance of expensive, pixel-level dense labels to train robust semantic segmentation models under full supervision. This study proposes a model-agnostic Depth Edge Alignment Loss to improve Weakly Supervised Semantic Segmentation models across different datasets. The methodology generates pixel-level semantic labels from image-level supervision, avoiding expensive annotation processes. While weak supervision is widely explored in tr…

Headhunter: forget about amnesia
When Headhunter came out on the Dreamcast, it was when the format was dying and games were being reduced to silly prices in HMV. This was good news for my collection and my wallet, with many £5 games filling up my shelves. It was not good for the games themselves, since I had such an abundance of choice that I would not commit more than an hour or so to anything in particular.

The increasing variety and abundance of life itself vastly multiplies the number of niches available for life. The resulting system is a web of makers and users, eaters and eaten, collaborators and competitors.
-Pardot Kynes, Report to Emperor Shaddam IV
#dunequotes

The Effects of Time Since Fire On Bird Community Composition in Chaparral Ecosystems Across Los Angeles County
Lucas Qiu, Daniel Stockel, James Kraynik, Katie Lau, Ashley Yoon
https://arxiv.org/abs/2510.03573

The Effects of Time Since Fire On Bird Community Composition in Chaparral Ecosystems Across Los Angeles County
This study investigates the impact of time since fire on bird community composition in Southern California chaparral ecosystems. We surveyed avian richness and abundance across 14 sites representing a 0 to 25 year post-fire chronosequence in Los Angeles County. Sites burned within the last five years supported fewer species, primarily dominated by generalists, while mid- to late-successional sites exhibited greater richness and a higher proportion of specialists. These patterns corresponded wit…

Sonnet 001 - I
From fairest creatures we desire increase,
That thereby beauty's rose might never die,
But as the riper should by time decease,
His tender heir might bear his memory:
But thou contracted to thine own bright eyes,
Feed'st thy light's flame with self-substantial fuel,
Making a famine where abundance lies,
Thy self thy foe, to thy sweet self too cruel:
Thou that art now the world's fresh ornament,
And onl…

pbhstat: A Python package for calculating the primordial black hole abundance
Philippa S. Cole, Jacopo Fumagalli
https://arxiv.org/abs/2509.14326 https://a…

pbhstat: A Python package for calculating the primordial black hole abundance
We present pbhstat, a publicly available Python package designed to compute the mass function and total abundance of primordial black holes (PBHs) from a given primordial power spectrum. The package offers a modular framework using multiple statistical approaches, including Press-Schechter theory, peaks theory, and formalisms based on the non-linear compaction function. Currently, the implementation is limited to scenarios with nearly Gaussian initial conditions.

Optimal Transport Based Hyperspectral Unmixing for Highly Mixed Observations
D. Doutsas, B. Figliuzzi
https://arxiv.org/abs/2509.20417 https://arxiv.org/pd…

Optimal Transport Based Hyperspectral Unmixing for Highly Mixed Observations
We propose a novel approach based on optimal transport (OT) for tackling the problem of highly mixed data in blind hyperspectral unmixing. Our method constrains the distribution of the estimated abundance matrix to resemble a targeted Dirichlet distribution more closely. The novelty lies in using OT to measure the discrepancy between the targeted and true abundance distributions, which we incorporate as a regularization term in our optimization problem. We demonstrate the efficiency of our meth…

The impact of cosmic filaments on the abundance of satellite galaxies
Yuxi Meng, Haonan Zheng, Shihong Liao, Lizhi Xie, Lan Wang, Hongxiang Chen, Liang Gao, Quan Guo, Yingjie Jing, Jie Wang, Hang Yang, Guangquan Zeng
https://arxiv.org/abs/2509.22179

The impact of cosmic filaments on the abundance of satellite galaxies
The impact of cosmic web environments on galaxy properties plays a critical role in understanding galaxy formation. Using the state-of-the-art cosmological simulation IllustrisTNG, we investigate how satellite galaxy abundance differs between filaments and the field, with filaments identified using the DisPerSE algorithm. When filaments are identified using galaxies as tracers, we find that, across all magnitude bins, central galaxies in filaments tend to host more satellite galaxies than their…

A Single Index Approach to Integrated Species Distribution Modeling for Fisheries Abundance Data
Quan Vu, Francis K. C. Hui, A. H. Welsh, Samuel Muller, Eva Cantoni, Christopher R. Haak
https://arxiv.org/abs/2509.15379

A Single Index Approach to Integrated Species Distribution Modeling for Fisheries Abundance Data
In fisheries ecology, species abundance data are often collected by multiple surveys, each with unique characteristics. This article focuses on Atlantic sea scallop abundance data along the northeast coast of the United States, collected from two bottom trawl surveys which cover a larger spatial domain but have low catch efficiency, and a dredge survey which is more efficient but limited to domains where the species are believed to be present. To model such data, integrated species distribution…

Implications of a Weakening N = 126 Shell Closure Away from Stability for r-Process Astrophysical Conditions
Mengke Li, Gail C. McLaughlin, Rebecca Surman
https://arxiv.org/abs/2510.02690

Implications of a Weakening N = 126 Shell Closure Away from Stability for r-Process Astrophysical Conditions
The formation of the third r-process abundance peak near A = 195 is highly sensitive to both nuclear structure far from stability and the astrophysical conditions that produce the heaviest elements. In particular, the N = 126 shell closure plays a crucial role in shaping this peak. Experimental data hints that the shell weakens as proton number departs from Z = 82, a trend largely missed by global mass models. To investigate its impact on r-process nucleosynthesis, we employ both standard globa…

😅 Don't sweat it: New device detects sweat biomarker at minimal perspiration rate
https://medicalxpress.com/news/2025-09-dont-device-biomarker-minimal-perspiration.html

Don't sweat it: New device detects sweat biomarker at minimal perspiration rate
Available on demand, in abundance and containing multiple biomarkers, sweat is an increasingly appealing medium for monitoring health, according to researchers at Penn State. But not everyone—especially critically ill patients—can build up enough sweat to provide a robust enough sample for current analysis techniques.

Representing LLMs in Prompt Semantic Task Space
Idan Kashani, Avi Mendelson, Yaniv Nemcovsky
https://arxiv.org/abs/2509.22506 https://arxiv.org/pdf/2509.22…

Representing LLMs in Prompt Semantic Task Space
Large language models (LLMs) achieve impressive results over various tasks, and ever-expanding public repositories contain an abundance of pre-trained models. Therefore, identifying the best-performing LLM for a given task is a significant challenge. Previous works have suggested learning LLM representations to address this. However, these approaches present limited scalability and require costly retraining to encompass additional models and datasets. Moreover, the produced representation utili…

Combustion Behaviour of Single Silicon Particles in Different Oxidizing Environments
Herman (Cloud), Heng, Hugo Keck, Christian Chauveau, Samuel Goroshin, Jeffrey Bergthorson, Fabien Halter
https://arxiv.org/abs/2509.24070

Combustion Behaviour of Single Silicon Particles in Different Oxidizing Environments
Silicon, despite its abundance and high energy density, remains underexplored as a carbon-free fuel, with limited data available on its combustion characteristics. In this work, the combustion behaviour of silicon particles is examined using an electrostatic levitator with laser ignition. Five oxidizing environments at atmospheric pressure are investigated: air, pure oxygen, and mixtures containing 40% oxygen (by mole) diluted with nitrogen, helium, or argon. The burning droplet peak temperatur…

Observation of CH$_{3}$$^{17}$OH and CH$_{3}$$^{18}$OH in Orion KL: A New Tool to Study Star-Formation History
Yoshimasa Watanabe, Takahiro Oyama, Akemi Tamanai, Shaoshan Zeng, Nami Sakai
https://arxiv.org/abs/2510.08041

Observation of CH$_{3}$$^{17}$OH and CH$_{3}$$^{18}$OH in Orion KL: A New Tool to Study Star-Formation History
Methanol is a seed species of complex organic molecules that is of fundamental importance in astrochemistry. Although various isotopologues of CH$_3$OH have been detected in the interstellar medium (ISM), CH$_{3}$$^{17}$OH is only tentatively detected in Sgr~B2. To confirm the presence of CH$_{3}$$^{17}$OH in the ISM and to investigate its abundance, we search for its emission lines in the Orion~KL region. We have obtained image cubes covering the frequency ranges 236.40~GHz-236.65~GHz and 231.…

Nice article about the importance of connecting data, harmony without orchestration of millions of small flexible energy actions, inspired by a post of mine.
https://nemlog.substack.com/p/sustainability-will-not-be-commanded

Sustainability Will Not Be Commanded; It Will Be Coded
How smarter signals, flexible habits, and open systems could turn energy abundance into everyday opportunity

Investigating the Sulfur Mystery in Protoplanetary Disks Through Chemical Modeling
Becky J. Williams, L. Ilsedore Cleeves, Rachel E. Gross, Jackson Baker
https://arxiv.org/abs/2510.02176

Investigating the Sulfur Mystery in Protoplanetary Disks Through Chemical Modeling
Sulfur is a critical element to life on Earth, and with detections of sulfur-bearing molecules in exoplanets and comets, questions arise as to how sulfur is incorporated into planets in the first place. In order to understand sulfur's journey from molecular clouds to planets, we need to understand the molecular forms that sulfur takes in protoplanetary disks, where the rotational emission from sulfur-bearing molecules in the gas phase indicates a very low abundance. To address this question, we…

Flare-Driven Plasma Dynamics and Elemental Abundance Redistribution
Biswajit Mondal, Amy R. Winebarger
https://arxiv.org/abs/2510.02102 https://arxiv.org/p…

Flare-Driven Plasma Dynamics and Elemental Abundance Redistribution
Since the advent of X-ray and EUV spectroscopy, the discovery of the First Ionization Potential (FIP) effect--where coronal elemental compositions diverge from their photospheric values based on the element's FIP--has remained a key puzzle in solar and stellar astrophysics. These deviations exhibit significant fluctuations during flares, yet their connection to plasma dynamics has remained unclear. Here, we report a clear correlation between temperature-sensitive flaring plasma emission and ele…

Griffiths phase emerging from strong mutualistic disorder in high-dimensional interacting systems
Tommaso Jack Leonardi, Amos Maritan, Sandro Azaele
https://arxiv.org/abs/2509.24692

Griffiths phase emerging from strong mutualistic disorder in high-dimensional interacting systems
The majority of analysis of interacting systems is done for weak and well-balanced interactions, when in fact topology and rare event factors often result in strong and sign-biased interactions when considering real systems. We analyse the impact of strong mutualistic interactions in a uniformly weighted Erdős-Rényi network under generalised Lotka-Volterra dynamics. In difference to the typical case we show the interaction topology and system dynamics combine to produce power law abundance di…

No room for monopole dark matter
Felix Br\"ummer, Giacomo Ferrante, Th\'eodore Fischer, Michele Frigerio
https://arxiv.org/abs/2509.21924 https://…

No room for monopole dark matter
The magnetic monopole of a dark sector has been advocated as an appealing dark matter candidate. We revisit the computation of the monopole abundance $Ω_M$, generated by a thermal phase transition in the minimal 't Hooft-Polyakov model. We explore the three regimes where the phase transition is second order, weakly first order, or supercooled, identifying the parameter space regions where $Ω_M$ can match the observed dark matter abundance. However, the dark sector necessarily contains a stabl…

Simulations of Globular Cluster Evolution with Multiple Stellar Populations
Mirek Giersz, Abbas Askar, Arkadiusz Hypki, Jongsuk Hong, Grzegorz Wiktorowicz, Lucas Hellstrom
https://arxiv.org/abs/2510.06942

Simulations of Globular Cluster Evolution with Multiple Stellar Populations
The formation of stars with light-element abundance variations in globular clusters and the subsequent dynamical evolution of these multiple populations remains an open question. One of the most widely discussed is the AGB scenario, in which chemically processed material from the envelopes of AGB stars mixes with re-accreted primordial gas flowing into the center of the cluster. Based on this scenario, more than two hundred MOCCA simulations of cluster evolution have been carried out, incorpora…

Sonnet 023 - XXIII
As an unperfect actor on the stage,
Who with his fear is put beside his part,
Or some fierce thing replete with too much rage,
Whose strength's abundance weakens his own heart;
So I, for fear of trust, forget to say
The perfect ceremony of love's rite,
And in mine own love's strength seem to decay,
O'ercharg'd with burthen of mine own love's might.
O! let my looks be then the eloquence
And …

JADES: An Abundance of Ultra-Distant T- and Y-Dwarfs in Deep Extragalactic Data
Kevin N. Hainline, Jakob M. Helton, Brittany E. Miles, Jarron Leisenring, Mark S. Marley, Sagnick Mukherjee, Nicholas F. Wogan, Andrew J. Bunker, Benjamin D. Johnson, Roberto Maiolino, Marcia Rieke, Pierluigi Rinaldi, Brant Robertson, Fengwu Sun, Sandro Tacchella, Christina C. Williams, Christopher N. A. Willmer

JADES: An Abundance of Ultra-Distant T- and Y-Dwarfs in Deep Extragalactic Data
Ultra-cool T- (T$_{\mathrm{eff}} \approx$ 500 - 1200 K) and Y-dwarfs (T$_{\mathrm{eff}}$ $\lessapprox 500$ K) have historically been found only a few hundred parsecs from the Sun. The sensitivity and wavelength coverage of the NIRCam instrument on board the James Webb Space Telescope offer a unique method for finding low-temperature brown dwarfs in deep extragalactic datasets out to multiple kiloparsecs. Here we report on the selection of a sample of 41 brown dwarf and brown dwarf candidates ac…

🇺🇦 Auf radioeins läuft...
CATT:
🎵 Jungle Of Abundance
#NowPlaying #CATT
#radioeins gespielten Titel als #Spotify Playliste: https://open.spotify.com/playlist/3hdH98B6uyXilhcWxCA6nv

SongPrep: A Preprocessing Framework and End-to-end Model for Full-song Structure Parsing and Lyrics Transcription
Wei Tan, Shun Lei, Huaicheng Zhang, Guangzheng Li, Yixuan Zhang, Hangting Chen, Jianwei Yu, Rongzhi Gu, Dong Yu
https://arxiv.org/abs/2509.17404

SongPrep: A Preprocessing Framework and End-to-end Model for Full-song Structure Parsing and Lyrics Transcription
Artificial Intelligence Generated Content (AIGC) is currently a popular research area. Among its various branches, song generation has attracted growing interest. Despite the abundance of available songs, effective data preparation remains a significant challenge. Converting these songs into training-ready datasets typically requires extensive manual labeling, which is both time consuming and costly. To address this issue, we propose SongPrep, an automated preprocessing pipeline designed specif…

Excursion Set Approach to Primordial Black Holes: Cloud-in-Cloud and Mass Function Revisited
Ashu Kushwaha, Teruaki Suyama
https://arxiv.org/abs/2509.25871 https://

Excursion Set Approach to Primordial Black Holes: Cloud-in-Cloud and Mass Function Revisited
The abundance and mass function of primordial black holes (PBHs) are often estimated using the Press-Schechter (PS) formalism. In the case of halo formation, the PS formalism suffers from the miscounting of regions collapsing into halos, known as the cloud-in-cloud problem, which is usually corrected by introducing a multiplicative `fudge factor 2'. By analogy, this factor has sometimes been applied to PBH calculations, although its validity has remained unsettled. We reformulate the PS approac…

r-process nucleosynthesis with ab initio nuclear masses around the N=82 shell closure
Jan Kuske, Takayuki Miyagi, Almudena Arcones, Achim Schwenk
https://arxiv.org/abs/2509.19131

r-process nucleosynthesis with ab initio nuclear masses around the N=82 shell closure
Our understanding of the origin of heavy elements beyond iron relies on the rapid neutron capture process (r-process), which accounts for roughly half of their cosmic abundance. However, the extreme neutron-rich conditions required for the r-process involve many nuclei that remain experimentally inaccessible, making theoretical predictions essential. We explore the impact of nuclear masses calculated with the ab initio valence-space in-medium similarity renormalization group, focusing on the re…

Nonuniform Water Distribution in Jupiter's Mid Latitudes: Influence of Precipitation and Planetary Rotation
Huazhi Ge, Cheng Li, Xi Zhang, Andrew P. Ingersoll, Sihe Chen
https://arxiv.org/abs/2509.25610

Nonuniform Water Distribution in Jupiter's Mid Latitudes: Influence of Precipitation and Planetary Rotation
Knowing the composition of Jupiter's atmosphere is crucial for constraining Jupiter's bulk metallicity and formation history. Yet, constraining Jupiter's atmospheric water abundance is challenging due to its potential non-uniform distribution. Here, we explicitly resolve the water hydrological cycle in Jupiter's mid-latitudes using high-resolution simulations. Falling precipitation leads to a significant large-scale depletion of water vapor beneath the lifting condensation level. A non-uniform …

Abundance anomalies in low mass field mergers as evidence of a merger origin for the second generation stars in globular clusters
Valery Kravtsov (Sternberg Astronomical Institute, Lomonosov Moscow State University, Russia), Sami Dib (Max Planck Institute for Astronomy, Germany), Francisco A. Calderon (Departamento de Fisica, Unuversidad Catolica del Norte, Chile)

Abundance anomalies in low mass field mergers as evidence of a merger origin for the second generation stars in globular clusters
The canonical formation of second-generation (G2) stars in globular clusters (GCs) from gas enriched and ejected by G1 (primordial) polluters faces substantial challenges, i.e. (i) a mass-budget problem and (ii) uncertainty in the source(s) of the abundance anomaly of light elements (AALE) in G2 stars. The merger of G1 low-mass main-sequence (MS) binaries can overcome (i), but its ability to result in AALE is omitted. We provide evidence of the merger process to explain AALE by relying on highl…

Understanding an origin of palladium in metal-poor stars based on the non-LTE analysis of Pd~I lines
L. Mashonkina, A. Smogorzhevskii
https://arxiv.org/abs/2510.06968 https://…

Understanding an origin of palladium in metal-poor stars based on the non-LTE analysis of Pd~I lines
Palladium is one of poorly observed neutron-capture elements. Abundance determinations for stellar samples covering a broad metallicity range are needed for better understanding the mechanisms of Pd synthesis during the Galaxy evolution. We aim to obtain accurate abundances of Pd for the Sun and the sample of metal-poor stars based on the non-local thermodynamic equilibrium (non-LTE) line formation for Pd~I. We present a new, comprehensive model atom of Pd~I. Abundances of Pd, Sr, Ba, and Eu we…

My mother is incredible.
We like to joke that she is a model #immigrant:
- She came to the #US fleeing from the war in #Ukraine, with no further plan besides getting to me and my husband in at least temporary safety.
- We had to run a crowdfunding campaign to help her and the kids sustain themselves as they waited for their #TPS immigration paperwork to process.
- Once her work authorization came through, she somehow managed to get a job as faculty at #Cornell - and started their #Ukrainian program, teaching the language and Ukrainian history for the first time in the university’s curriculum.
- Now she’s been accepted to academic conferences, publications, and has joined the board of the refugee support organization in #Ithaca that helped her get settled there herself.
I’m so proud of her. Y’all should read this article, it’s pretty good: https://www.ithacawelcomesrefugees.org/giving-from-abundance-krystynas-journey-to-becoming-an-iwr-board-member/

Vanishing Refractories: Tracing Dust Evolution in the BP Tau Protoplanetary Disk
Marbely Micolta (University of Michigan), Justin Svarc (University of Michigan), Nuria Calvet (University of Michigan), Ezequiel Manzo-Martinez (University of Michigan, Universidad Nacional Aut\'onoma de M\'exico), Thanawuth Thanathibodee (Chulalongkorn University), Gladis Magris C (Centro de Investigaciones de Astronom\'ia ''Francisco J. Duarte'' CIDA), Avalon Littwiller (Unive…

Vanishing Refractories: Tracing Dust Evolution in the BP Tau Protoplanetary Disk
We present a multi-wavelength analysis of the dust of BP Tau's protoplanetary disk. We use new optical spectra of BP Tau, taken with the Magellan/MIKE spectrograph in tandem with archival UV and mid-infrared observations. We use the magnetospheric accretion model to analyze the Ca II K and Mg II 2796.4 Å emission lines and derive the abundance of Ca and Mg in the accretion flows as a proxy for the refractory abundance in the innermost gas disk. Furthermore, we used irradiated accretion disk mo…

Applications of the Vendi score in genomic epidemiology
Bjarke Frost Nielsen, Amey P. Pasarkar, Qiqi Yang, Bryan T. Grenfell, Adji Bousso Dieng
https://arxiv.org/abs/2509.22520 …

Applications of the Vendi score in genomic epidemiology
The Vendi score (VS), a diversity metric recently conceived in the context of machine learning, with applications in a wide range of fields, has a few distinct advantages over the metrics commonly used in ecology. It is classification-independent, incorporates abundance information, and has a tunable sensitivity to rare/abundant types. Using rich COVID-19 sequence data as a paradigm, we develop methods for applying the VS to time-resolved sequence data. We show how the VS allows for characteriz…

Direct Collapse Black Hole Candidates from Decaying Dark Matter
Yash Aggarwal, James B. Dent, Philip Tanedo, Tao Xu
https://arxiv.org/abs/2509.25325 https://

Direct Collapse Black Hole Candidates from Decaying Dark Matter
Injecting 1-13.6 eV photons into the early universe can suppress the molecular hydrogen abundance and alter the star formation history dramatically enough to produce direct collapse black holes. These, in turn, could explain the recently observed population of puzzling high-redshift supermassive black holes that appear to require super-Eddington accretion. We show that axion dark matter decay in the intergalactic medium can account for this energy injection. We use a single zone model of the ga…

SIGNALS of Giant HII Regions: A Spatially Resolved Analysis of NGC 604
Ray Garner III, Robert C. Kennicutt Jr, Laurent Drissen, Carmelle Robert, Laurie Rousseau-Nepton, Christophe Morisset, Philippe Amram, R. Pierre Martin, Emma Jarvis
https://arxiv.org/abs/2510.03144

SIGNALS of Giant HII Regions: A Spatially Resolved Analysis of NGC 604
Observing giant HII regions at fine spatial scales uncovers detailed structures and reveals variations in ionization, abundance, and dynamical properties of ionized gas and the effect of stellar feedback. Using emission line data of M33 observed with SITELLE as part of the Star-formation, Ionized Gas, and Nebular Abundances Legacy Survey (SIGNALS), we present maps of the principal optical emission line ratios for NGC 604, the most luminous HII region in M33. The excitation maps align well with …

Observation of undepleted phosphine in the atmosphere of a low-temperature brown dwarf
Adam J. Burgasser (UC San Diego), Eileen C. Gonzales (SFSU), Samuel A. Beiler (U. Toledo), Channon Visscher (Dordt U, Space Science Institute), Ben Burningham (U. Hertfordshire), Gregory N. Mace (U. Texas Austin), Jacqueline K. Faherty (AMNH), Zenghua Zhang (Nanjing U.), Clara Sousa-Silva (Bard College, Institute of Astrophysics,Space Sciences), Nicolas Lodieu (IAC, La Laguna U.), Stanimir A. Metchev…

Observation of undepleted phosphine in the atmosphere of a low-temperature brown dwarf
The atmospheres of low-temperature brown dwarfs and gas giant planets are expected to contain the phosphine molecule, PH$_3$ However, previous observations have shown much lower abundances of this molecule than predicted by atmospheric chemistry models. We report JWST spectroscopic observations of phosphine in the atmosphere of the brown dwarf Wolf 1130C. Multiple absorption lines due to phosphine are detected around 4.3 $μ$m, from which we calculate a phosphine abundance of 0.100$\pm$0.009 pa…

Scaling properties of nuclear parton distributions in short-range-correlation motivated two-component parametrization
Petja Paakkinen
https://arxiv.org/abs/2510.00252 https://…

Scaling properties of nuclear parton distributions in short-range-correlation motivated two-component parametrization
We provide some critical remarks on the recently proposed two-component parametrization of nuclear parton distribution functions, which was motivated by the apparent correlation between the nuclear modifications of structure functions and nucleon-nucleon short-range correlation phenomena. This parametrization, we show, is invariant under a rescaling transformation of the involved abundance coefficients, which means that the global normalization of these coefficients cannot be meaningfully deter…

Revisiting the Atmosphere of HD 149026b: The Role of Stellar Abundances and Choice of Opacities in Exoplanet Atmosphere Modeling
Priyanka Baghel, Jayesh Goyal, Gaurav Shukla
https://arxiv.org/abs/2509.25785

Revisiting the Atmosphere of HD 149026b: The Role of Stellar Abundances and Choice of Opacities in Exoplanet Atmosphere Modeling
Planet formation occurs within the same molecular cloud as the host star, suggesting a link between the elemental abundances of star and the planet. Exoplanet atmosphere studies often assume solar abundances for host stars, however, specific host star abundances might lead to more accurate constraints. In this work, we perform sensitivity studies for a metal rich stellar host HD 149026 and its exoplanet HD 149026b, to understand the effect of solar versus stellar abundance choice on the $P$-$T$…

The chemical DNA of the Magellanic Clouds III. The first, extragalactic Mg-K anticorrelation: the LMC globular cluster NGC 1786
Deimer Antonio Alvarez Garay, Alessio Mucciarelli, Lorenzo Monaco
https://arxiv.org/abs/2510.02846

The chemical DNA of the Magellanic Clouds III. The first, extragalactic Mg-K anticorrelation: the LMC globular cluster NGC 1786
In this work we derived [K/Fe] and [Mg/Fe] abundance ratios for six stars of the old globular cluster NGC 1786 in the Large Magellanic Cloud. We employed high-resolution spectra acquired with the MIKE spectrograph mounted at the Magellan/Clay telescope. We found a clear Mg-K anticorrelation among the analyzed stars. In particular, the Mg-poor stars ([Mg/Fe] < 0.0 dex) are enriched by ~ 0.25 dex in [K/Fe] compared to the Mg-rich stars ([Mg/Fe] > 0.0 dex). This finding makes NGC 1786 the first gl…

Building up JWST-SUSPENSE: inside-out quenching at cosmic noon from age, Fe-, and Mg-abundance gradients
Chloe M. Cheng, Martje Slob, Mariska Kriek, Aliza G. Beverage, Guillermo Barro, Rachel Bezanson, Anna de Graaff, Natascha M. F\"orster Schreiber, Brian Lorenz, Danilo Marchesini, Ignacio Mart\'in-Navarro, Adam Muzzin, Andrew B. Newman, Sedona H. Price, Katherine A. Suess, Arjen van der Wel, Jesse van de Sande, Pieter G. van Dokkum, Daniel R. Weisz

Building up JWST-SUSPENSE: inside-out quenching at cosmic noon from age, Fe-, and Mg-abundance gradients
Spatially resolved stellar populations of massive, quiescent galaxies at cosmic noon provide powerful insights into star-formation quenching and stellar mass assembly mechanisms. Previous photometric work has revealed that the cores of these galaxies are redder than their outskirts. However, spectroscopy is needed to break the age-metallicity degeneracy and uncover the driver of these colour gradients. Here, we derive age and elemental abundance gradients for 8 distant ($1.2 \lesssim z \lesssim…

A non-inflationary solution to the monopole problem
Daniele Perri
https://arxiv.org/abs/2509.23726 https://arxiv.org/pdf/2509.23726

A non-inflationary solution to the monopole problem
Magnetic monopoles are a long-standing prediction of Grand Unified Theories, yet their efficient production in early universe phase transitions would lead to a monopole abundance that far exceeds observational limits. The standard solution of the problem invokes inflation occurring after monopole production, diluting their density to undetectable levels and eliminating any possibility of present-day observation. Here, we propose an alternative solution based on the breaking, in the early univer…

MHASS: Microbiome HiFi Amplicon Sequencing Simulator
Rye Howard-Stone, Ion Mandoiu
https://arxiv.org/abs/2509.12428 https://arxiv.org/pdf/2509.12428…

MHASS: Microbiome HiFi Amplicon Sequencing Simulator
Summary: Microbiome HiFi Amplicon Sequence Simulator (MHASS) creates realistic synthetic PacBio HiFi amplicon sequencing datasets for microbiome studies, by integrating genome-aware abundance modeling, realistic dual-barcoding strategies, and empirically derived pass-number distributions from actual sequencing runs. MHASS generates datasets tailored for rigorous benchmarking and validation of long-read microbiome analysis workflows, including ASV clustering and taxonomic assignment. Availabil…

The interstellar heritage of comets
Karen Willacy, Liton Majumdar, Boncho Bonev, Erika Gibb, Neil Dello Russo, Michael DiSanti, Ronald J. Vervack Jr, Nathan X Roth
https://arxiv.org/abs/2509.20530

The interstellar heritage of comets
Comets have similar compositions to interstellar medium ices, suggesting at least some of their molecules maybe inherited from an earlier stage of evolution. To investigate the degree to which this might have occurred we compare the composition of individual comets to that of the well-studied protostellar region IRAS 16293-2422B. We show that the observed molecular abundance ratios in several comets correlate well with those observed in the protostellar source. However, this does not necessaril…

Crosslisted article(s) found for astro-ph.GA. https://arxiv.org/list/astro-ph.GA/new
[1/1]:
- JADES: An Abundance of Ultra-Distant T- and Y-Dwarfs in Deep Extragalactic Data
Kevin N. Hainline, et al.

An Error Model for Evaluating the Accuracy of Satellite-Based XCO$_2$ Products
Vineet Yadav, Jonathan Hobbs, Hai M. Nguyen, Susan S. Kulawik, Junjie Liu, David F. Baker, Isamu Morino, Hirofumi Ohyama, Voltaire A. Velazco, Mihalis Vrekoussis, Manvendra K. Dubey
https://arxiv.org/abs/2509.16419

An Error Model for Evaluating the Accuracy of Satellite-Based XCO$_2$ Products
Several satellites (e.g., OCO-2 & 3) and their derived products now provide spatially extensive coverage of the abundance of carbon dioxide in the atmospheric column (XCO$_2$). However, the accuracy of the XCO$_2$ reported in these products needs to be carefully assessed for any downstream scientific analysis; this involves comparison with reference datasets, such as those from the Total Carbon Column Observing Network (TCCON). Previously, systematic and random errors have been used to quantify…

Radiative hydrodynamic simulations of FIP fractionation in solar flares
Jeffrey W. Reep, Luke Fushimi Benavitz, Andy S. H. To, David H. Brooks, J. Martin Laming, Patrick Antolin, David M. Long, Deborah Baker
https://arxiv.org/abs/2509.25695

Radiative hydrodynamic simulations of FIP fractionation in solar flares
Elemental abundances in solar flares are observed to vary both spatially and temporally, but the underlying mechanisms remain poorly understood. There is an interplay between advection and the preferential acceleration of low first ionization potential (FIP) elements that likely shapes the observed abundance distributions. Models of the FIP effect predict enhancements near loop footpoints that diffuse upward over time. We simulate strong evaporation events that advect this low-FIP enhancement i…

Signatures of dark subhalos in dwarf spheroidal galaxies: I. Fluctuations in surface density
Eduardo Vitral, Jorge Pe\~narrubia, Matthew G. Walker
https://arxiv.org/abs/2509.26056

Signatures of dark subhalos in dwarf spheroidal galaxies: I. Fluctuations in surface density
Dark matter (DM) subhalos offer critical tests of cosmological models through their abundance and properties, yet most remain undetectable due to their lack of stars. We investigate whether their presence leaves measurable imprints on the projected stellar density fields of dwarf spheroidal galaxies (dSphs). Building on literature $N$-body experiments, we show that subhalo interactions induce subtle out-of-equilibrium fluctuations appearing as density corrugations. In a CDM framework, these flu…

X-rays from Inelastic Dark Matter Freeze-in
Gordan Krnjaic, David McKeen, Riku Mizuta, Gopolang Mohlabeng, David E. Morrissey, Douglas Tuckler
https://arxiv.org/abs/2509.19428 h…

X-rays from Inelastic Dark Matter Freeze-in
We study inelastic dark matter produced via freeze-in through a light mediator with a mass splitting below the electron-positron threshold. In this regime, the heavier dark matter state is naturally long-lived compared to the age of the Universe and decays to the lighter state in association with photons. Given a light mediator, the dark matter abundance is directly related to the decay rate of the heavier dark matter. We show that observations of photons from the galactic center can effectivel…

A multi-object approach for studying exoplanet atmospheres using high-resolution spectrographs
Manjunath Bestha, Athira Unni, T. Sivarani, Dhanush S R, Lokesh Manickavasaham, Parvathy M, Devika K Divakar, Arun Surya
https://arxiv.org/abs/2509.18721

Polycyclic aromatic hydrocarbons destruction in star-forming regions across 42 nearby galaxies
Oleg V. Egorov, Adam K. Leroy, Karin Sandstrom, Kathryn Kreckel, Dalya Baron, Francesco Belfiore, Ryan Chown, Jessica Sutter, M\'ed\'eric Boquien, Mar Canal i Saguer, Enrico Congiu, Daniel A. Dale, Evgeniya Egorova, Michael Huber, Jing Li, Thomas G. Williams, J\'er\'emy Chastenet, I-Da Chiang, Ivan Gerasimov, Hamid Hassani, Hwihyun Kim, Hannah Koziol, Janice C. Lee, Rebecca L.…

Polycyclic aromatic hydrocarbons destruction in star-forming regions across 42 nearby galaxies
Polycyclic aromatic hydrocarbons (PAHs) are widespread in the interstellar medium (ISM) of Solar metallicity galaxies, where they play a critical role in ISM heating, cooling, and reprocessing stellar radiation. The PAH fraction, the abundance of PAHs relative to total dust mass, is a key parameter in ISM physics. Using JWST and MUSE observations of 42 galaxies from the PHANGS survey, we analyze the PAH fraction in over 17 000 H II regions spanning a gas-phase oxygen abundance of 12+log(O/H) = …

A nearly pristine star from the Large Magellanic Cloud
Alexander P. Ji, Vedant Chandra, Selenna Mejias-Torres, Zhongyuan Zhang, Philipp Eitner, Kevin C. Schlaufman, Hillary Diane Andales, Ha Do, Natalie M. Orrantia, Rithika Tudmilla, Pierre N. Thibodeaux, Keivan G. Stassun, Madeline Howell, Jamie Tayar, Maria Bergemann, Andrew R. Casey, Jennifer A. Johnson, Joleen K. Carlberg, William Cerny, Jose G. Fernandez-Trincado, Keith Hawkins, Juna A. Kollmeier, Chervin F. P. Laporte, Guilherme …

A nearly pristine star from the Large Magellanic Cloud
The first stars formed out of pristine gas, causing them to be so massive that none are expected to have survived until today. If their direct descendants were sufficiently low-mass stars, they could exist today and would be recognizable by having the lowest metallicity (abundance of elements heavier than helium). The lowest metallicity star currently known is a star in the thick disk of the Milky Way with total metallicity Z < 1.4 x 10^-6 (log Z/Zsun < -4.0). While other stars with lower iron …

Replaced article(s) found for astro-ph.GA. https://arxiv.org/list/astro-ph.GA/new
[1/1]:
- First direct carbon abundance measured at $z>10$ in the lensed galaxy MACS0647$-$JD
Hsiao, Topping, Coe, Chisholm, Berg, , \'Alvarez-M\'arquez, Maiolino, Dayal, Furtak

Lepton Collider as a Window to Reheating via Freezing Out Dark Matter Detection
Subhaditya Bhattacharya, Anupam Ghosh, Niloy Mondal, Abhik Sarkar
https://arxiv.org/abs/2509.14340

Lepton Collider as a Window to Reheating via Freezing Out Dark Matter Detection
We investigate a particle dark matter (DM) scenario where the DM interaction with the Standard Model are mediated by a leptophilic effective operator. Unlike conventional WIMP scenarios where thermal freeze-out occurs in a radiation-dominated Universe, we consider DM freeze-out during a prolonged reheating epoch driven by inflaton decay. The resulting departure from standard cosmology alters the thermal evolution of the dark matter abundance, making it sensitive to the reheating temperature and…

Galactic chemical evolution of short-lived radioactive isotopes produced by explosive nucleosynthesis: $^{60}$Fe and $^{53}$Mn
Thomas C. L. Truemam, Andr\'es Yag\"ue L\'opez, Maria Lugaro, Marco Pignatari
https://arxiv.org/abs/2509.20956

Galactic chemical evolution of short-lived radioactive isotopes produced by explosive nucleosynthesis: $^{60}$Fe and $^{53}$Mn
Several short-lived radionuclides (SLRs) are know to have existed in the early Solar System (ESS). These species, which typically decay with half-lives of the order of a few million years, can be used to probe the timescale of events preceding the birth of the Sun. We investigate the ESS origin of $^{53}$Mn, produced by core-collapse (CCSNe) and Type Ia supernovae (SNe Ia), and $^{60}$Fe, produced exclusively by CCSNe. We model the evolution of the radioactive-to-stable abundance ratios of thes…

A GLIMPSE of Intermediate Mass Black holes in the epoch of reionization: Witnessing the Descendants of Direct Collapse?
Qinyue Fei, Seiji Fujimoto, Rohan P. Naidu, John Chisholm, Hakim Atek, Gabriel Brammer, Yoshihisa Asada, Volker Bromm, Lukas J. Furtak, Jenny E. Greene, Tiger Yu-Yang Hsiao, Junehyoung Jeon, Vasily Kokorev, Jorryt Matthee, Priyamvada Natarajan, Johan Richard, Alberto Saldana-Lopez, Daniel Schaerer, Marta Volonteri, Adi Zitrin

A GLIMPSE of Intermediate Mass Black holes in the epoch of reionization: Witnessing the Descendants of Direct Collapse?
JWST has revealed an abundance of supermassive black holes (BHs) in the early Universe, and yet the lowest mass seed black holes that gave rise to these populations remain elusive. Here we present a systematic search for broad-line Active Galactic Nuclei (AGNs) in some of the faintest high-$z$ galaxies surveyed yet by combining ultra-deep JWST/NIRSpec G395M spectroscopy with the strong lensing aid in Abell S1063. By employing the profile of the [OIII]$λ5007$ emission lines as a template for na…

New constraints on $Z^\prime$ from captured dark matter annihilation in astrophysical objects
Basabendu Barman, Pooja Bhattacharjee, Arindam Das
https://arxiv.org/abs/2509.12192

New constraints on $Z^\prime$ from captured dark matter annihilation in astrophysical objects
Considering dark matter capture in astrophysical objects such as neutron stars and brown dwarfs, followed by their annihilation into two neutrino and four neutrino final states, we derive new constraints on the mass and coupling of a novel abelian gauge boson $Z^\prime$ arising from an anomaly-free $U(1)$ extension of the Standard Model. We further confront these astrophysical limits with complementary bounds from the Planck-observed relic abundance via the freeze-in mechanism, big bang nucleos…

A search for chemical stratification and magnetic fields in eight field blue horizontal-branch stars
Issouf Kafando, Gregg Wade, Alexandre David-Uraz, Francis LeBlanc, Carmelle Robert
https://arxiv.org/abs/2509.16797

A search for chemical stratification and magnetic fields in eight field blue horizontal-branch stars
In this article, we present the results of an analysis of chemical abundances and a search for magnetic fields in eight field blue horizontal-branch (BHB) stars: BD\,+01$^{\circ}$0548, HD\,74721, HD\,86986, HD\,87112, HD\,93329, HD\,109995, HD\,161817, and HD\,167105. This study is based on high-resolution optical spectra obtained with ESPaDOnS at the Canada-France-Hawaii Telescope. We first calculated the average chemical element abundance, the rotational velocity, and the radial velocity of t…

Stars and ionized gas in UGCA 320: a nearby gas-rich, dwarf Irregular galaxy
Adebusola B. Alabi, S. Ilani Loubser, Moses K. Mogotsi, N. Zabel
https://arxiv.org/abs/2509.20359 ht…

Stars and ionized gas in UGCA 320: a nearby gas-rich, dwarf Irregular galaxy
UGCA 320 is a gas-rich dwarf irregular galaxy which belongs to a nearby, relatively isolated group of dwarf galaxies. Here, we combine multi-band HST imaging data with deep long-slit SALT/RSS and integral-field VLT/MUSE spectral data to study the stellar and ionized gas components of UGCA 320. Our imaging data analysis reveals a very blue (V-I~0.1 mag), flattened radial colour profile. We detect an abundance of ionized gas in UGCA 320 powered mostly by recent star formation. The stellar disc in…

Kinematical analysis of PNe with high ADF: Hf 2-2 and M 1-42
Lesly Casta\~neda-Carlos, Michael G. Richer, Silvia Torres-Peimbert, Anabel Arrieta, Lorena Arias
https://arxiv.org/abs/2509.16201

Kinematical analysis of PNe with high ADF: Hf 2-2 and M 1-42
We use deep Echelle spectroscopy of the planetary nebulae Hf 2-2 and M1-42 to study the characteristics of the plasma that gives rise to their high abundance discrepancy factors (70 and 20, respectively). We analyze position-velocity diagrams for forbidden and permitted lines (92 and 93 lines in Hf 2-2 and M 1-42, respectively), to compare their kinematic behaviour and to determine the physical characteristics of the emitting plasma. We confirm that there are two plasma components in both nebul…

Investigating Phosphorus Abundances in a Sample of APOGEE-2 Bulge Globular Clusters
Beatriz Barbuy, Jos\'e G. Fern\'andez-Trincado, Morgan S. Camargo, Doug Geisler, Maren Brauner, Sandro Villanova, Dante Minniti, Domingo Anibal Garc\'ia-Hern\'andez, Stefano O. Souza, Heitor Ernandes, Am\^ancio Fria\c{c}a, Marco Pignatari
https://

Investigating Phosphorus Abundances in a Sample of APOGEE-2 Bulge Globular Clusters
Phosphorus enhanced (P-rich; [P/Fe] > 0.8) giants have been found among mildly metal-poor fiels stars, but in only one star in a globular cluster (GC), M4 (NGC 6121). Also, in a sample of bulge spheroid stars, some of them showed a moderate P-enhancement in the range +0.5 < [P/Fe] < +1.0. In this paper we derive the P abundance of moderately metal-poor ([Fe/H] ~-1) GC stars, aiming to check if the phenomenon could be related to the unusual multiple stellar populations found in most GCs. Here we…

Chemical Enrichment of Isolated Relic Galaxy Mrk1216
M. K{\i}yami Erdim, Emine G\"ulmez, Murat H\"udaverdi
https://arxiv.org/abs/2509.14613 https://

Chemical Enrichment of Isolated Relic Galaxy Mrk1216
In this study, we investigate the chemical enrichment and structural evolution of the isolated elliptical relic galaxy Mrk1216 through X-ray observations. As a red-nugget relic, Mrk1216 provides a rare window into the early Universe, owing to its minimal interaction with the surrounding environment. Using data from the XMM-Newton telescope, we model the X-ray emission of its interstellar medium to derive radial temperature and abundance profiles. We find that the central region exhibits an elev…

High-energy interstellar isomers: cis-N-methylformamide in the G 0.693-0.027 molecular cloud
S. Zeng, V. M. Rivilla, M. Sanz-Novo, M. Melosso, I. Jim\'enez-Serra, L. Colzi, A. Meg\'ias, D. San Andr\'es, A. L\'opez-Gallifa, A. Mart\'inez-Hernares, S. Mart\'in
https://arxiv.org/abs/2509.12097

High-energy interstellar isomers: cis-N-methylformamide in the G+0.693-0.027 molecular cloud
Isomerism in complex organic molecules provides key insights into the formation mechanisms and physical conditions of the interstellar medium (ISM). Among the C$_2$H$_5$NO isomers, only acetamide and trans-N-methylformamide (trans-NMF) have been detected in space. The recent detection of higher-energy isomers in other chemical families raises questions about the formation and abundance of less stable isomers. We used ultra-sensitive wide-band spectral surveys obtained with the Yebes 40 m and IR…

Negative gas-phase metallicity gradients in the narrow line region and galactic disc of local AGN-host galaxies
Amirnezam Amiri, Johan H. Knapen, Bret D. Lehmer, Amirhossein Khoram
https://arxiv.org/abs/2509.12156

Negative gas-phase metallicity gradients in the narrow line region and galactic disc of local AGN-host galaxies
The gas-phase metallicity distribution in galaxies provides significant information on their evolution. We report the discovery of nega- tive radial gradients in the gas-phase metallicity of the narrow-line region of the nine galaxies in the Measuring Active Galactic Nuclei Under MUSE Microscope (MAGNUM) galaxies: Centaurus A, Circinus, IC 5063, NGC 1068, NGC 1365, NGC 1386, NGC 2992, NGC 4945, NGC 5643. From strong-line abundance relations for active galactic nuclei (AGN) and star-forming regi…