Tootfinder

Hot donors in cataclysmic variables: The case of EI Psc
J. K\'ara, S. Zharikov, M. Wolf, N. Vaidman, A. Agishev, S. Khokhlov, C. E. Chavez
https://arxiv.org/abs/2505.21865

Hot donors in cataclysmic variables: The case of EI Psc
Context: We present results of time-resolved optical spectroscopy and photometry of the short-orbital period dwarf nova EI Psc. Aims: This study aims to determine fundamental system parameters of EI Psc, study properties of accretion structures in the system, and investigate its origin and current evolution state. Methods: We analyse newly obtained time-resolved spectroscopic and photometric observations as well as archival data. We used light curve modelling, Doppler tomography, and MESA e…

Detection of CO$_2$, CO, and H$_2$O in the atmosphere of the warm sub-Saturn HAT-P-12b
N. Crouzet, B. Edwards, T. Konings, J. Bouwman, M. Min, P. -O. Lagage, R. Waters, J. P. Pye, L. Heinke, M. Guedel, Th. Henning, B. Vandenbussche, O. Absil, I. Argyriou, D. Barrado, A. Boccaletti, C. Cossou, A. Coulais, L. Decin, R. Gastaud, A. Glasse, A. M. Glauser, F. Lahuis, G. Olofsson, P. Patapis, D. Rouan, P. Royer, N. Whiteford, L. Colina, G. \"Ostlin, T. P. Ray, E. F. van Dishoeck

Detection of CO$_2$, CO, and H$_2$O in the atmosphere of the warm sub-Saturn HAT-P-12b
The chemical composition of warm gas giant exoplanet atmospheres (with Teq < 1000 K) is not well known due to the lack of observational constraints. HAT-P-12 b is a warm, sub-Saturn-mass transiting exoplanet that is ideal for transmission spectroscopy. One transit of HAT-P-12 b was observed with JWST NIRSpec in the 2.87-5.10 $μ$m range with a resolving power of $\sim$1000. The JWST data are combined with archival observations from HST WFC3 covering the 1.1-1.7 $μ$m range. The data are analyse…

#DH2025 @mcollardanuy.bsky.social presented on HTR for Late Middle Ages Catalan notarial manuscripts https://www.bsc.es/research-development/re

Computational Archival History
Computational Archival History

"We Have Glue and a Dream: A Case Study on Just for Fun Outreach at the Lemmen Library and Archives" https://creativelibrarypractice.org/2025/07/21/we-have-glue-and-a-dream/

An H$\alpha$ Cloud in the HI Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1-m Telescope
Cheng Cheng, Jia-Sheng Huang, Peng Wei, Ali Esamdin, Guojie Feng, Zhi-Xiang Zhang, Haojing Yan, Wei Du, Pei Zuo, Zi-Jian Li, Gustavo Orellana, Letian Wang, Yong Wang, Abdusamatjan Iskandar, Shahidin Yaqup
https://

An H$α$ Cloud in the HI Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1-m Telescope
We present first-light deep H$α$ imaging taken with the Nanshan 1-meter wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy Survey. The H$α$ image shows ongoing star formation not only inside the galaxy but also in an HI cloud in the eastern HI tail, which is roughly 16 kpc away from the main galaxy. The HST images reveal several ultra-blue compact objects ($\rm F5…

Searching for radio pulsars in old open clusters from the Parkes archive
S. B. Zhang, J. J. Wei, X. Yang, S. Dai, J. S. Wang, L. Toomey, S. Q. Wang, G. Hobbs, X. F. Wu, L. Staveley-Smith
https://arxiv.org/abs/2506.19236

Searching for radio pulsars in old open clusters from the Parkes archive
Motivated by the discovery of a pulsar in the direction of the old open cluster NGC 6791, we conducted a search for radio pulsars in archival Parkes observations targeting similar old open clusters. We reprocessed 224 observations totalling 75.02 hours from four clusters: Theia 1661, NGC 6259, Pismis 3, and Trumpler 20. Our analysis identified five known pulsars and three new rotating radio transient (RRAT) candidates. By comparing the measured dispersion measures (DMs) with the expected DM val…

OpenTRV Archive Material and Sources - Archival collection of OpenTRV history, events, links, discussion, and related material. #OpenTRV #heating #cutCarbon -

Hiding behind a curtain of dust: Gas and dust properties of an ultra-luminous strongly-lensed z = 3.75 galaxy behind the Milky Way disk
Bel\'en Alcalde Pampliega, Kevin C. Harrington, Aristeidis Amvrosiadis, Manuel Aravena, Min S. Yun, Hugo Messias, Antonio Hern\'an-Caballero, Leindert Boogaard, Axel Wei{\ss}, Benjamin Beauchesne, Alejandro Santamar\'ia-Miranda, Monica Ivette Rodriguez, Eric Jim\'enez-Andrade, Manuel Solimano, James Lowenthal, Pascale Hibon, Patrick Kam…

Hiding behind a curtain of dust: Gas and dust properties of an ultra-luminous strongly-lensed z = 3.75 galaxy behind the Milky Way disk
We present a detailed analysis of J154506, a strongly lensed submillimeter galaxy (SMG) behind the Lupus-I molecular cloud, and characterization of its physical properties. Using a combination of archival and new data (including sub-arcsecond resolution ($\sim0.75$) ALMA observations, VLT/MUSE and FORS2 optical data, as well as spectral scans from the ACA and the LMT) we identify two high-significance (SNR>5) emission lines at 97.0 and 145.5 GHz, corresponding to CO(4-3) and CO(6-5), respective…

Good Morning Karlsruhe! Day 02 of the Effekte Science Festival with our booth presenting the Wiedergutmachung project, a huge digitalisation effort on historical archival documents on the recompensation processes of nationalsocialist injustice
@… @…

Something like one in ten documents in this archival fonds (generated by the 19th-century state) are requisitions, receipts, or correspondence regarding stationary or postage.
This has me wondering: what percentage of communications in today's bureaucracies deal with IT?

SocioXplorer: An Interactive Tool for Topic and Network Analysis in Social Data
Sandrine Chausson, Youssef Al Hariri, Walid Magdy, Bj\"orn Ross
https://arxiv.org/abs/2506.18845

SocioXplorer: An Interactive Tool for Topic and Network Analysis in Social Data
SocioXplorer is a powerful interactive tool that computational social science researchers can use to understand topics and networks in social data from Twitter (X) and YouTube. It integrates, among other things, artificial intelligence, natural language processing and social network analysis. It can be used with ``live" datasets that receive regular updates. SocioXplorer is an extension of a previous system called TwiXplorer, which was limited to the analysis of archival Twitter (X) data. Socio…

Self-supervised learning of speech representations with Dutch archival data
Nik Vaessen, David A. van Leeuwen, Roeland Ordelman
https://arxiv.org/abs/2507.04554

Self-supervised learning of speech representations with Dutch archival data
This paper explores the use of Dutch archival television broadcast data for self-supervised learning of speech foundation models, specifically wav2vec 2.0. We first study data quality assumptions for pre-training, and show how music, noise and speaker overlap affect SSL convergence and downstream fine-tuning performance. Secondly, we explore effectively pre-processing strategies to convert the noisy broadcast dataset into a qualitative dataset for pre-training, by using Whisper and WhisperX., T…

There's still a few things I want to improve, like maybe adding some tags and having the archival links in the feed as well, but at least it works for now!

Investigating the Anti-Correlation between Photon Index and Flux of the Crab using RXTE and NuSTAR
Debjit Chatterjee, Hsiang-Kuang Chang, Dipak Debnath, Koothodil Abhijith Augustine, Tzu-Hsuan Lin
https://arxiv.org/abs/2506.17899

Investigating the Anti-Correlation between Photon Index and Flux of the Crab using RXTE and NuSTAR
We present a systematic study of the recently reported anti-correlation between X-ray flux and photon index ($Γ$) in the Crab Nebula, using archival RXTE/PCA (3 - 50 keV), RXTE/HEXTE (20 - 100 keV), and NuSTAR (3 - 78 keV) observations. Spectra were extracted in soft (3 - 10 keV) and hard bands (10 - 50 keV, 10 - 78 keV, 20 - 100 keV) and fitted with an absorbed power-law model. Across all instruments and energy ranges, we confirm the existence of a persistent negative correlation -- harder sp…

OpenTRV Archive Material and Sources - Archival collection of OpenTRV history, events, links, discussion, and related material. #OpenTRV #heating #cutCarbon -

The MALATANG survey: Dense gas distribution on sub-kiloparsec scales across the disk of M82
Jian-Fa Wang, Yu Gao, Xue-Jian Jiang, Li Ji, Zhi-Yu Zhang, Jun-Zhi Wang, Jun-Feng Wang, R. Thomas Greve, Yan Jiang, Ashley Bemis, Elias Brinks, Aeree Chung, J. Malcolm Currie, Richard de Grijs, Taotao Fang, C. Luis Ho, Bumhyun Lee, Satoki Matsushita, Micha{\l} Micha{\l}owski, Soojong Pak, Panomporn Poojon, G. Mark Rawlings, Amelie Saintonge, Yi-Chen Sun, Jing Zhou

The MALATANG survey: Dense gas distribution on sub-kiloparsec scales across the disk of M82
We present observations of HCN J=4-3 and HCO^+ J=4-3 lines obtained with the James Clerk Maxwell Telescope as part of the MALATANG survey, combined with archival HCN J=1-0 and HCO^+ J=1-0 data from the Green Bank Telescope, to study the spatial distribution and excitation conditions of dense molecular gas in the disk of M82. We detect HCN J=4-3 and HCO^+ J=4-3 emission within the central region (< 500 pc) of the galaxy, while the J=1-0 emission lines exhibit a more extended spatial distribution…

Explaining interested people in Karlsruhe about our research on the challenges & opportunities of the digitalisation of the more than 100km of archival documents of the recompensation process of nationalsocialist injustice
#digitalisierung @…

Folk at #DH2025 might be interested in this article 'From handwriting to searchable text: using AI to make millions of historical documents accessible'

From handwriting to searchable text: using AI to make millions of historical documents accessible
In April 2025 the Swedish National Archives made 1,2 million digital images of archival documents into searchable, machine readable text — making the information in the archives more accessible than…

SKYSURF-10: A Novel Method for Measuring Integrated Galaxy Light
Delondrae D. Carter, Timothy Carleton, Daniel Henningsen, Rogier A. Windhorst, Seth H. Cohen, Scott Tompkins, Rosalia O'Brien, Anton M. Koekemoer, Juno Li, Zak Goisman, Simon P. Driver, Aaron Robotham, Rolf Jansen, Norman Grogin, Haina Huang, Tejovrash Acharya, Jessica Berkheimer, Haley Abate, Connor Gelb, Isabela Huckabee, John MacKenty

SKYSURF-10: A Novel Method for Measuring Integrated Galaxy Light
We describe the drizzling pipeline and contents of the drizzled database for Hubble Space Telescope Cycle 27-29 Archival Legacy project "SKYSURF," the largest archival project ever approved for Hubble. SKYSURF aims to investigate the extragalactic background light (EBL) using all 143,914 ACSWFC, WFC3UVIS, and WFC3IR images that have been taken by Hubble since its launch in 2002. SKYSURF has produced 38,027 single-visit mosaics and 7,893 multi-visit mosaics across 28 ACSWFC, WFC3UVIS, and WFC3IR…

Sooo... does anyone know why the jemalloc repository has been archived? It was fairly active right until the archival.
https://github.com/jemalloc/jemalloc

TOI-1846b: A super-Earth in the radius valley orbiting a nearby M dwarf
Abderahmane Soubkiou, Khalid Barkaoui, Zouhair Benkhaldoun, Mourad Ghachoui, Jamila Chouqar, Benjamin V. Rackham, Adam Burgasser, Emma Softich, Enric Pall\'e, Akihiko Fukui, Norio Narita, Felipe Murgas, Steve B. Howell, Catherine A. Clark, Colin Littlefield, Allyson Bieryla, Andrew W. Boyle, David Ciardi, Karen Collins, Kevin I. Collins, Jerome de Leon, Courtney D. Dressing, Jason Eastman, Emma Esparza-Borges, …

TOI-1846b: A super-Earth in the radius valley orbiting a nearby M dwarf
We present the discovery and validation of a super-Earth planet orbiting the M dwarf star TOI-1846 (TIC 198385543). The host star(Kmag = 9.6)is located 47 pc away and has a radius of Rs=0.41+/-0.01R_Sun,a mass of Ms=0.40+/-0.02M_Sun and an effective temperature of Teff=3568+/-44K. Our analyses are based on joint modelling of TESS photometry and ground-based multi-color photometric data. We also use high-resolution imaging and archival images, as well as statistical validation techniques to supp…

Orbital and Physical Properties of the Pleiades Binary 27 Tau (Atlas)
G. Torres (CfA), A. Tkachenko, K. Pavlovski, S. Gossage, G. H. Schaefer, C. Melis, M. Ireland, J. D. Monnier, N. Anugu, S. Kraus, C. Lanthermann, K. Gordon, R. Klement, S. J. Murphy, R. M. Roettenbacher
https://arxiv.org/abs/2507.15933

Orbital and Physical Properties of the Pleiades Binary 27 Tau (Atlas)
We report new spectroscopic and interferometric observations of the Pleiades binary star Atlas, which played an important role nearly three decades ago in settling the debate over the distance to the cluster from ground-based and space-based determinations. We use the new measurements, together with other published and archival astrometric observations, to improve the determination of the 291-day orbit and the distance to Atlas ($136.2 \pm 1.4$ pc). We also derive the main properties of the com…

On Barriers to Archival Audio Processing
Peter Sullivan, Muhammad Abdul-Mageed
https://arxiv.org/abs/2507.08768 https://arxiv.org/pdf…

On Barriers to Archival Audio Processing
In this study, we leverage a unique UNESCO collection of mid-20th century radio recordings to probe the robustness of modern off-the-shelf language identification (LID) and speaker recognition (SR) methods, especially with respect to the impact of multilingual speakers and cross-age recordings. Our findings suggest that LID systems, such as Whisper, are increasingly adept at handling second-language and accented speech. However, speaker embeddings remain a fragile component of speech processing…

ArchiveGPT: A human-centered evaluation of using a vision language model for image cataloguing
Line Abele, Gerrit Anders, Tolgahan Ayd{\i}n, J\"urgen Buder, Helen Fischer, Dominik Kimmel, Markus Huff
https://arxiv.org/abs/2507.07551

ArchiveGPT: A human-centered evaluation of using a vision language model for image cataloguing
The accelerating growth of photographic collections has outpaced manual cataloguing, motivating the use of vision language models (VLMs) to automate metadata generation. This study examines whether Al-generated catalogue descriptions can approximate human-written quality and how generative Al might integrate into cataloguing workflows in archival and museum collections. A VLM (InternVL2) generated catalogue descriptions for photographic prints on labelled cardboard mounts with archaeological co…

Red Supergiants as Supernova Progenitors
Schuyler D. Van Dyk
https://arxiv.org/abs/2507.15973 https://arxiv.org/pdf/2507.15973…

Red Supergiants as Supernova Progenitors
The inevitable fate of massive stars in the initial mass range of ~8--30 M_{Sun} in the red supergiant (RSG) phase is a core-collapse supernova (SN) explosion, although some stars may collapse directly to a black hole. We know that this is the case, since RSGs have been directly identified and characterized for a number of supernovae (SNe) in pre-explosion archival optical and infrared images. RSGs likely all have some amount of circumstellar matter (CSM), through nominal mass loss, although ev…

Physical properties of newly active asteroid 2010 LH15
Bin Liu, Cunhui Li, Zhongcheng Mu, Xiaodong Liu
https://arxiv.org/abs/2507.12747 https://

Physical properties of newly active asteroid 2010 LH15
Main-belt asteroid 2010 LH$_{15}$ has been classified as an active asteroid, based on the recent discovery of dust activity from the archival images observed in 2010 and 2019. In this study, we perform measurements and dynamical modeling of the dust tail of the active asteroid 2010 LH$_{15}$ using ZTF archival data from July 26 to August 31, 2019, with the derived physical properties from these relatively independent methods being compatible. The photometric results show that the radius of the …

I live for studies of the influence of archival organization on our understanding of the past.

SKYSURF IX -- The Cosmic Optical and Infrared Background from Integrated Galaxy Light Measurements
Scott A. Tompkins, Simon P. Driver, Aaron S. G. Robotham, Rogier A. Windhorst, Delondrae Carter, Timothy Carleton, Zak Goisman, Daniel Henningsen, Luke J. Davies, Sabine Bellstedt, Jordan C. J. D'Silva, Juno Li, Seth H. Cohen, Rolf A. Jansen, Rosalia O'Brien, Anton M. Koekemoer, Norman Grogin, John MacKenty

SKYSURF IX -- The Cosmic Optical and Infrared Background from Integrated Galaxy Light Measurements
As part of the SKYSURF Hubble Space Telescope (HST) Legacy Archival program we present galaxy number counts which yield measurements of the extragalactic background light (EBL) at 15 different wavelengths. We have processed 82,752 HST images across 23 filters into 16,686 mosaics using the same software and processing pipeline throughout. Using 17/23 filters that give reliable galaxy counts, we constrain the integrated galaxy light (IGL) with a 1.5-9\% error between 0.3 and 1.6 $μ$m in combinat…

This https://arxiv.org/abs/2505.09530 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Einstein, Free Creations, and His Worldly Cloister
This paper examines "Free Creations of the Human Mind: The Worlds of Albert Einstein" by Diana Kormos Buchwald and Michael D. Gordin. The authors seek to dispel the long-standing myths of Einstein as the "lone genius" of Bern and the "stubborn sage" of Princeton, drawing on newly uncovered archival materials to illuminate his intellectual networks and collaborative engagements. By exploring the authors' reasoning, this paper engages with their interpretations, highlighting the strengths of thei…

OpenTRV Archive Material and Sources - Archival collection of OpenTRV history, events, links, discussion, and related material. #OpenTRV #heating #cutCarbon -

Decadal evolution of a repeating fast radio burst source
P. Wang, J. S. Zhang, Y. P. Yang, D. K. Zhou, Y. K. Zhang, Y. Feng, Z. Y. Zhao, J. H. Fang, D. Li, W. W. Zhu, B. Zhang, F. Y. Wang, Y. F. Huang, R. Luo, J. L. Han, K. J. Lee, C. W. Tsai, Z. G. Dai, H. Gao, X. P. Zheng, J. H. Cao, X. L. Chen, E. Gugercinoglu, J. C. Jiang, W. C. Jing, Y. Li, J. Li, W. J. Lu, J. W. Luo, F. Lyu, C. C. Miao, C. H. Niu, J. R. Niu, Y. Qu, W. Y. Wang, Y. D. Wang, Y. B. Wang, C. J. Wang, Q. Wu, Y. S. Wu, …

Decadal evolution of a repeating fast radio burst source
The origin of fast radio bursts (FRBs), the brightest cosmic radio explosions, is still unknown. Bearing critical clues to FRBs' origin, the long-term evolution of FRBs has yet to be confirmed, since the field is still young and most FRBs were seen only once. Here we report clear evidence of decadal evolution of FRB~20121102A, the first precisely localized repeater. In conjunction with archival data, our FAST and GBT monitoring campaign since 2020 reveals a significant 7% decline of local dispe…

Diffuse X-Ray-emitting Gas in the Central Region of Star-Forming Galaxies
Chunyi Zhang, Junfeng Wang
https://arxiv.org/abs/2506.17663 https://

Diffuse X-Ray-emitting Gas in the Central Region of Star-Forming Galaxies
The interstellar medium of galaxies, with temperatures reaching several million degrees, provides a pivotal perspective for understanding the physical and chemical properties of star formation, galactic evolution, and their associated feedback mechanisms. We use archival data from $Chandra$ observations to extract the diffuse X-ray emission from 23 nearby star-forming galaxies and study its correlation with star formation activity in the central region of these galaxies. The surface brightness …

A Semi-Empirical Estimate of Solar EUV Evolution from 10 Myr to 10 Gyr
Kevin France (University of Colorado), Girish Duvvuri (Vanderbilt), Cynthia Froning (SwRI), Alexander Brown (University of Colorado), P. Christian Schneider (Christian-Albrects University), J. Sebastian Pineda (University of Colorado), David Wilson (University of Colorado), Allison Youngblood (NASA/GSFC), Vladimir Airapetian (NASA/GSFC), Kosuke Namekata (NASA/GSFC, Kyoto University), Yuta Notsu (University of Colora…

A Semi-Empirical Estimate of Solar EUV Evolution from 10 Myr to 10 Gyr
The extreme-ultraviolet (EUV; 100 -- 911 Å) spectra of F, G, K, and M stars provide diagnostics of the stellar chromosphere through the corona, with line and continuum formation temperatures spanning roughly 10$^{4}$ - 10$^{7}$ K. The EUV stellar spectrum in turn drives atmospheric photochemistry and numerous escape processes on orbiting planets. We present a new study of the EUV history of solar-type stars, using new and archival {\it Hubble Space Telescope} observations of solar analogs (T$_…

SO emission in the dynamically perturbed protoplanetary disks around CQ Tau and MWC 758
Francesco Zagaria, Haochang Jiang, Gianni Cataldi, Stefano Facchini, Myriam Benisty, Yuri Aikawa, Sean Andrews, Jaehan Bae, Marcelo Barraza-Alfaro, Pietro Curone, Ian Czekala, Daniele Fasano, Cassandra Hall, Iain Hammond, Jane Huang, John D. Ilee, Andr\'es F. Izquierdo, Jensen Lawrence, Giuseppe Lodato, Fran\c{c}ois M\'enard, Christophe Pinte, Giovanni P. Rosotti, Jochen Stadler, Richard Tea…

SO emission in the dynamically perturbed protoplanetary disks around CQ Tau and MWC 758
We report the serendipitous detection of the SO $J_N=6_5-5_4$ (219.949 GHz) rotational transition in archival Atacama Large Millimeter/submillimeter Array (ALMA) observations of the spiral hosting protoplanetary disks around CQ Tau (with $\approx4.9σ$ significance) and MWC 758 (with $\approx3.4σ$ significance). In the former, the SO emission comes in the shape of a ring, arises from the edge of the continuum cavity, and is qualitatively consistent, at the currently available spectral resoluti…

The Radio Spectral Energy Distribution and Star Formation Calibration in MIGHTEE-COSMOS Highly Star-Forming Galaxies at 1.5 < z < 3.5
Fatemeh Tabatabaei, Maryam Khademi, Matt J. Jarvis, Russ Taylor, Imogen H. Whittam, Fangxia An, Reihaneh Javadi, Eric J. Murphy, Mattia Vaccar
https://arxiv.org/abs/2506.16275

The Radio Spectral Energy Distribution and Star Formation Calibration in MIGHTEE-COSMOS Highly Star-Forming Galaxies at 1.5 < z < 3.5
Studying the radio spectral energy distribution (SED) of distant galaxies is essential for understanding their assembly and evolution over cosmic time. We present rest-frame radio SEDs of a sample of 160 starburst galaxies at redshifts 1.5 to 3.5 in the COSMOS field, as part of the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) project. MeerKAT observations, combined with archival VLA and GMRT data, allow us to determine the integrated mid-radio (1-10 GHz) continuum (MRC) …

OpenTRV Archive Material and Sources - Archival collection of OpenTRV history, events, links, discussion, and related material. #OpenTRV #heating #cutCarbon -

Multi-frequency analysis of the ALMA and VLA high resolution continuum observations of the substructured disc around CI Tau. Preference for sub-mm-sized low-porosity amorphous carbonaceous grains
Francesco Zagaria, Stefano Facchini, Pietro Curone, Jonathan P. Williams, Cathie J. Clarke, \'Alvaro Ribas, Marco Tazzari, Enrique Mac\'ias, Richard A. Booth, Giovanni P. Rosotti, Leonardo Testi

Multi-frequency analysis of the ALMA and VLA high resolution continuum observations of the substructured disc around CI Tau. Preference for sub-mm-sized low-porosity amorphous carbonaceous grains
(Abridged) We present high angular resolution and sensitivity ALMA 3.1 mm and VLA 9.1 mm observations of the disc around CI Tau. These new data were combined with similar-resolution archival ALMA 0.9 and 1.3 mm observations and new and archival VLA 7.1 mm, 2.0, 3.0, and 6.0 cm photometry to study the properties of dust in this system. At wavelengths <3.1 mm, CI Tau's continuum emission is very extended and highly substructured (with three gaps, four rings, and two additional gap-ring pairs iden…

The radio properties of quasi-periodic X-ray eruption sources
A. J. Goodwin, R. Arcodia, G. Miniutti, J. C. A Miller-Jones, S. van Velzen
https://arxiv.org/abs/2506.14417

The radio properties of quasi-periodic X-ray eruption sources
Quasi-periodic X-ray eruptions (QPEs) are a new class of repeating nuclear transient in which repeating X-ray flares are observed coming from the nuclei of generally low mass galaxies. Here we present a comprehensive summary of the radio properties of 12 bona-fide quasi-periodic eruption sources, including a mix of known tidal disruption events (TDEs) and AGN-like hosts. We include a combination of new dedicated radio observations and archival/previously published radio observations to compile …

Of lynxes and limetrees: New Insights into the Historical Ecology of the Bavarian Forest on the Threshold of Modernity
Bettina Haas, Markus Gerstmeier, Ricarda Huter, Malte Rehbein
https://arxiv.org/abs/2507.02512

Of lynxes and limetrees: New Insights into the Historical Ecology of the Bavarian Forest on the Threshold of Modernity
This study explores the historical ecology of the Bavarian Forest at the threshold of modernity through the lens of a large-scale biodiversity survey conducted in 1845 across the Kingdom of Bavaria. Focusing on the Forestry Office of Zwiesel, the article analyses archival records that document the distribution of animal and tree species during a period of administrative rationalisation and early scientific systematisation. These sources include official correspondence, detailed species inventor…

Studying the gaseous outskirts of galaxy groups with coherent Ly alpha absorption patterns
P. Richter, J. C. Charlton, A. J. Fox, Sameer, B. P. Wakker
https://arxiv.org/abs/2507.13435

Studying the gaseous outskirts of galaxy groups with coherent Ly alpha absorption patterns
In this study, we explore the properties of diffuse intergalactic gas residing in the outskirts of the four nearby, low-mass galaxy groups NGC1052, NGC5866, NGC4631, and NGC3992 (all at cz<2000 km/s) beyond their group virial radii. Using archival ultraviolet absorption spectra of bright AGN observed with HST/COS, we search for HI Ly a absorption near the groups' recession velocities along 35 sightlines that pass the outer group medium (OGrM) at normalized impact parameters rho/Rvir=1-3. We der…

OpenTRV Archive Material and Sources - Archival collection of OpenTRV history, events, links, discussion, and related material. #OpenTRV #heating #cutCarbon -

X-ray Measurements of $^{44}$Ti in Four Supernova Remnants
Tyler E. Hanover, Mark D. Leising
https://arxiv.org/abs/2507.11647 https://

X-ray Measurements of $^{44}$Ti in Four Supernova Remnants
We present the results of a search for scandium K$_α$ X-ray fluorescence resulting from $^{44}$Ti electron capture decay in four young supernova remnants. We analyzed archival XMM-Newton data from Tycho's SNR, Kepler's SNR, Cassiopeia A, and SN 1987A. We fit the X-ray spectra in regions of interest with up to four components, thermal and power-law, as needed to fit the spectrum, and add a gaussian to test for extra Sc emission. While all require the line with modest confidence, none represent …

A New Determination of the Mass of NGC 3603-A1: the Most Massive Binary Known?
Philip Massey, Sarah Bodansky, Laura R. Penny, Kathryn F. Neugent
https://arxiv.org/abs/2506.13522

A New Determination of the Mass of NGC 3603-A1: the Most Massive Binary Known?
The star NGC 3603-A1 has long been known to be a very massive binary, consisting of a pair of O2-3If*/WN5-6 stars, which show Wolf-Rayet-like emission due to their luminosities being near the Eddington limit. The system has been poorly characterized until now, due to the difficulties of obtaining reliable radial velocities from broad, blended emission lines and the extreme crowding in the cluster. However, previously unpublished archival HST/STIS spectra revealed that some of the upper Balmer l…

Great comet C/2023 A3 (Tsuchinshan-ATLAS): dust loss before perihelion
Bin Liu, Man-To Hui, Xiaodong Liu
https://arxiv.org/abs/2507.12756 https://

Great comet C/2023 A3 (Tsuchinshan-ATLAS): dust loss before perihelion
In this study, the dust loss of comet C/2023 A3 (Tsuchinshan-ATLAS) is investigated through the analysis of archival images. By measuring the surface brightness profile of the coma, we determined that the comet maintained nearly in a steady state during the observations. Analysis of the dust distribution perpendicular to the orbital plane reveals that the ejection velocity is $v_{\perp}\sim(65\pm5)\,β^{1/2}$ m s$^{-1}$, where $β$ is inversely proportional to the size of the dust grains. From …

Discovery of Faint Nebulosity Around a Z Camelopardalis-type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
Howard E. Bond (Penn State University, STScI), Dana Patchick (Deep Sky Hunters Consortium), Daniel Stern (MEA Observatory), Jonathan Talbot (Stark Bayou Observatory), John R. Thorstensen (Dartmouth)
https://

Discovery of Faint Nebulosity Around a Z Camelopardalis-type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?
We report our discovery of a faint nebula surrounding a previously little-studied 15th-mag variable star, ASASSN-19ds, in the southern-hemisphere constellation Antlia. Spectra verify that the star is a cataclysmic variable (CV). Using new and archival photometry, we confirm that ASASSN-19ds is an eclipsing binary with an orbital period of 0.139 days (3.34 hr). Moreover, its out-of-eclipse brightness shows a "sawtooth" light curve with an amplitude of $\sim$1~mag and an interval between peaks th…

The Multi-Wavelength Context of Delayed Radio Emission in TDEs: Evidence for Accretion-Driven Outflows
Kate D. Alexander, Raffaella Margutti, Sebastian Gomez, Michael Stroh, Ryan Chornock, Tanmoy Laskar, Y. Cendes, Edo Berger, Tarraneh Eftekhari, Noah Franz, Aprajita Hajela, B. D. Metzger, Giacomo Terreran, Michael Bietenholz, Collin Christy, Fabio de Colle, S. Komossa, Matt Nicholl, Enrico Ramirez-Ruiz, Richard Saxton, Genevieve Schroeder, Peter Williams, William Wu

The Multi-Wavelength Context of Delayed Radio Emission in TDEs: Evidence for Accretion-Driven Outflows
Recent observations presented in Cendes et al. (2024a) show that optically selected tidal disruption events (TDEs) commonly produce delayed radio emission that can peak years post-disruption. Here, we explore the multi-wavelength properties of a sample of radio-observed optically selected TDEs to shed light on the physical process(es) responsible for the late-rising radio emission. We combine new late-time X-ray observations with archival optical, UV, X-ray, and radio data to conclude that a di…

Breakthrough Listen: A Technosignature Search Around 27 Eclipsing Exoplanets Selected from the Transiting Exoplanet Survey Satellite Catalogue
R. Barrett (University of Southern Queensland), C. D. Tremblay (SETI Institute, CSIRO Astronomy and Space Science), B. Addison (University of Southern Queensland Centre for Astrophysics, Swinburne University of Technology Centre for Astrophysics and Supercomputing), D. C. Price (International Centre for Radio Astronomy Research, SKA Observatory …

Breakthrough Listen: A Technosignature Search Around 27 Eclipsing Exoplanets Selected from the Transiting Exoplanet Survey Satellite Catalogue
Here we analyse the archival data for a set of 27 Transiting Exoplanet Survey Satellite (TESS) Targets of Interest (TOIs) in search for artificially generated radio signals, or 'technosignatures', interrupted by occultation. Exoplanetary eclipses are notable events to observe in the search for technosignatures, as they mark the geometrical alignment of the target, its host star, and Earth. During an eclipse event, any signal emanating from the target of interest should cease for the duration of…

Structure and Magnetic Field of Bright-rimmed Cloud IC 1396E/SFO 38
Koji Sugitani, Jan G. A. Wouterloot, Harriet Parsons, Sarah Graves, Takayoshi Kusune, Archana Soam
https://arxiv.org/abs/2506.14137

Structure and Magnetic Field of Bright-rimmed Cloud IC 1396E/SFO 38
We carried out polarimetric observations of the bright-rimmed cloud IC 1396E/SFO 38 with SCUBA-2/POL-2 to study the effect of ultraviolet (UV) light on its structure and magnetic field. This bright-rimmed cloud appears optically to be one single cloud illuminated by the UV light from the excited star of IC 1396, however our Stokes I image and 13CO(J=3-2) archival data suggest that this cloud is not a simple, single structure, but appears to be composed of two parts on first glance; a head part …

A low mass, binary-stripped envelope for the Type IIb SN 2024abfo
S. de Wet, G. Leloudas, D. Buckley, N. Erasmus, P. J. Groot, E. Zimmerman
https://arxiv.org/abs/2507.11131

A low mass, binary-stripped envelope for the Type IIb SN 2024abfo
Type IIb supernovae (SNe) are a transitional subclass of stripped-envelope SNe showing hydrogen lines in their spectra that gradually weaken and give way to helium lines reminiscent of SNe Ib, which is indicative of stripping through stellar winds or binary interaction. SN 2024abfo is the seventh SN IIb with a direct progenitor detection. We find that the position of the supernova in our ERIS adaptive optics imaging agrees with the progenitor position in archival HST imaging to within 19 mas. T…

Probing Non-Thermal Processes in Stellar Flares on AU Mic
Adalyn Gibson, Adam F. Kowalski, Adina D. Feinstein
https://arxiv.org/abs/2506.10201 https://

Probing Non-Thermal Processes in Stellar Flares on AU Mic
The role of non-thermal proton energy transportation during solar and stellar flares is largely unknown; a better understanding of this physical process will allow us to rectify longstanding deficiencies in flare models. One way to detect the presence of non-thermal protons during flares is through the Orrall-Zirker (OZ) effect whereby an enhanced red wing appears in hydrogen emission lines (e.g., Lyman-$α$ at 1215.67 Angstrom). We analyze archival Hubble Space Telescope/Cosmic Origins Spectro…

Inner disc and circumplanetary material in the PDS 70 system
Daniele Fasano, Myriam Benisty, Pietro Curone, Stefano Facchini, Francesco Zagaria, Tomohiro C. Yoshida, Kiyoaki Doi, Anibal Sierra, Sean Andrews, Jaehan Bae, Andrea Isella, Nicol\'as T. Kurtovic, Laura M. P\'erez, Paola Pinilla, Luna Rampinelli, Richard Teague
https://

Inner disc and circumplanetary material in the PDS 70 system
The two giant protoplanets directly imaged in the dust-depleted cavity of PDS 70 offer a unique opportunity to study ongoing planet formation. Both planets have been detected in infrared thermal emission and in H$α$, indicating active accretion. We calibrate and analyse archival ALMA Band 6 and 7 observations of PDS 70 from 2019, 2021, and 2023 to search for circumplanetary material and assess its motion. Using 2D visibility modelling of the high-resolution (~0.11"x0.08" in Band 6; ~0.05"x0.05…

Unambiguous GeV gamma-rays from molecular clouds illuminated by particles diffusing from the adjacent supernova remnant G335.2 0.1 that is confined in an expanding bubble
Chen Huang, Xiao Zhang, Yang Chen, Qian-Qian Zhang, Wen-Juan Zhong, Xin Zhou
https://arxiv.org/abs/2507.08709

Unambiguous GeV gamma-rays from molecular clouds illuminated by particles diffusing from the adjacent supernova remnant G335.2+0.1 that is confined in an expanding bubble
We report the detection of GeV gamma-ray emission likely associated with supernova remnant (SNR) G335.2+0.1 and the finding of a molecular cloud ($\sim20$--$30^\prime$ in angular size) that is very likely in physical contact with the SNR and responsible for the gamma-ray emission. Using the 16.8 yr Fermi-LAT data, an extended emission, with a significance of 13.5 $σ$ and a radius 0.24° in 0.2--500 GeV in the uniform-disk model, was found to the adjacent east of the SNR. With archival Mopra CO…

A Transiting Giant on a 7.7-Year Orbit Revealed by TTVs in the TOI-201 System
Gracjan Maciejewski, Weronika {\L}oboda
https://arxiv.org/abs/2507.11504 http…

A Transiting Giant on a 7.7-Year Orbit Revealed by TTVs in the TOI-201 System
We report the detection and characterization of TOI-201 c, a long-period transiting companion to the warm Jupiter TOI-201 b. Its presence was first inferred from high-amplitude transit timing variations (TTVs) in TOI-201 b, pointing to a massive outer body on a $7.7^{+1.0}_{-0.6}$-year eccentric orbit. This prediction was confirmed when TESS observed a transit of TOI-201 c, precisely constraining its orbital geometry. A joint fit to TTVs, transit photometry, and archival radial velocities yield…

A Radio Flaring, Chromospherically-Inactive K Dwarf
Dale A. Frail, Scott D. Hyman, Michele L. Silverstein, Emil Polisensky, Evangelia Tremou, Simona Giacintucci, Hodari-Sadiki Hubbard-James, Jacinda Byam, Steve B. Howell, Robert F. Wilson, Matthew Lastovka, Tracy E. Clarke, Namir E. Kassim
https://arxiv.org/abs/2507.07255…

A Radio Flaring, Chromospherically-Inactive K Dwarf
We report on an unusual radio source J180526-292953, initially identified as a steep spectrum, polarized point source toward the Galactic bulge and found to coincide with the nearby K dwarf HD317101A. We conducted a multi-wavelength radio study utilizing new GMRT observations and archival data from ASKAP, MeerKAT, and the VLA. At 1.5 GHz, HD317101A exhibits highly polarized coherent emission with variable activity lasting several hours with an apparent period of 3.7 days, which is consistent wi…

Searching for sub-TeV IceCube neutrinos correlated to sub-threshold GW events
Tista Mukherjee (for the IceCube collaboration)
https://arxiv.org/abs/2506.09694

Searching for sub-TeV IceCube neutrinos correlated to sub-threshold GW events
The IceCube Neutrino Observatory is active in multi-messenger follow-ups of Gravitational Wave (GW) events. Since the release of the Gravitational Wave Transient Catalogue (GWTC)-2.1 by the LIGO-Virgo-KAGRA (LVK) collaboration, sub-threshold GW candidates have been made publicly available. However, they were not followed up in real-time to search for neutrino counterparts. For a deeper understanding of these sub-threshold candidates, archival searches are essential. Finding evidence for a neutr…

IRAS 16475-4609: A Young Compact HII Region Sculpting Its Molecular Environment
Felipe Navarete, Sean D. Points, Augusto Damineli
https://arxiv.org/abs/2506.08180

IRAS 16475-4609: A Young Compact HII Region Sculpting Its Molecular Environment
We present a near-infrared spectroscopic and imaging analysis of the star-forming region IRAS 16475-4609, based on TripleSpec/SOAR spectroscopy and NEWFIRM/CTIO imaging, complemented by archival radio and sub-millimeter data. Our spectroscopic analysis indicates that the central source is an early B-type star (B0-B0.7V) powering a compact HII region characterized by strong HI and HeI recombination lines, and molecular H$_2$ emission. We derive a distance of 3.51$\pm$0.74 kpc, consistent with th…

Pavo: Stellar feedback in action in a low-mass dwarf galaxy
Michael G. Jones, Martin P. Rey, David J. Sand, Kristine Spekkens, Burcin Mutlu-Pakdil, Elizabeth A. K. Adams, Paul Bennet, Denija Crnojevic, Amandine Doliva-Dolinsky, Richard Donnerstein, Catherine E. Fielder, Julia Healy, Laura C. Hunter, Ananthan Karunakaran, Deepthi S. Prabhu, Dennis Zaritsky

Pavo: Stellar feedback in action in a low-mass dwarf galaxy
MeerKAT observations of the recently discovered, extremely low mass galaxy, Pavo, have revealed a neutral gas (HI) reservoir that was undetected in archival HI single dish data. Based on the latest distance measurement ($2.16^{+0.08}_{-0.07}$ Mpc), we measure Pavo's HI mass as $\log M_\mathrm{HI}/\mathrm{M_\odot} = 5.79 \pm 0.05$, making it the lowest mass HI reservoir currently known in an isolated galaxy (with a robust distance measurement). Despite Pavo's extreme isolation, with no known nei…

A minor planet in an outer resonance with Uranus
Daniel Bamberger, K Ly, Sam Deen, Elvis Oliveira Mendes
https://arxiv.org/abs/2507.03696 https://

A minor planet in an outer resonance with Uranus
We have located archival observations of the centaur 2015 OU$_{194}$ from 2017 and 2018, which extend its data-arc length from 1.0 to 3.5 years. We show that it is in an outer $3:4$ mean motion resonance with Uranus, henceforth referred to as U$_{3/4}$. The resonance is stable from at least 1000 kyrs in the past till 500 kyrs in the future. We find no mention in the literature of known objects in this resonance, or in any other resonance between the orbits of Uranus and Neptune. Looking for add…

Evolution of the ZTF SLRN-2020 star-planet merger
Ricardo Yarza, Morgan MacLeod, Benjamin Idini, Ruth Murray-Clay, Enrico Ramirez-Ruiz
https://arxiv.org/abs/2507.05365

Evolution of the ZTF SLRN-2020 star-planet merger
We model the optical and infrared transient ZTF SLRN-2020, previously associated with a star-planet merger. We consider the scenario in which orbital decay via tidal dissipation led to the merger, and find that tidal heating within the star was likely unobservable in the archival image of the system taken $12\mathrm{yr}$ before the merger. The observed dust formation months before the merger is consistent with a planet of mass $M_\mathrm{p} \gtrsim 5M_\mathrm{J}$ ejecting material as it skims t…

Dynamical mass of the Serpens intermediate-mass young stellar system EC\,95 with DYNAMO--VLBA
Jazm\'in Ord\'o\~nez-Toro (Instituto de Radioastronom\'ia y Astrof\'isica, Universidad Nacional Aut\'onoma de M\'exico, M\'exico), Sergio A. Dzib (Max Planck Institut f\"ur Radioastronomie, Germany), Laurent Loinard (Instituto de Radioastronom\'ia y Astrof\'isica, Universidad Nacional Aut\'onoma de M\'exico, M\'exico, Black Hole Initiative a…

Dynamical mass of the Serpens intermediate-mass young stellar system EC\,95 with DYNAMO--VLBA
We present dynamical mass measurements, obtained from multi-epoch Very Long Baseline Interferometry (VLBI) observations, for the young multiple stellar system EC\,95, located in the core of the Serpens star-forming region. Our dataset includes both archival data and more recent observations obtained as part of the \textit{Dynamical Masses of Young Stellar Multiple Systems with the VLBA project} (DYNAMO--VLBA), totalling 32 epochs over 12 years of observation. The observations span more than hal…

Chandra X-ray Measurement of Heavy Element Abundances of Wolf-Rayet Stars in the Galactic Center
Ziqian Hua, Zhiyuan Li
https://arxiv.org/abs/2506.08587 ht…

Chandra X-ray Measurement of Heavy Element Abundances of Wolf-Rayet Stars in the Galactic Center
Elemental abundances hold important information about the star formation history in the Galactic Center. The thermal X-ray spectra of certain stars can provide a robust probe of elemental abundances, mainly through the presence of K-shell emission lines. In this work, based on deep archival {\it Chandra} observations, we obtain X-ray measurements of five heavy elements (Si, S, Ar, Ca and Fe) for three sources in the Arches cluster, one source in the Quintuplet cluster, as well as a field source…

This https://arxiv.org/abs/2409.18334 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Decade-long periodicity study of 2FHL blazars with historical optical data
In our recent investigation, we utilized a century's worth of archival optical data to search for a decade-long periodicity from the blazar PG 1553+113, finding a hint of a 22-yr period. Building on this foundation, the current study extends our analysis to include 10 blazars from the Fermi-Large Area Telescope Second Catalog of Hard Sources (2FHL) catalogue to uncover similar long-term periodic behaviour. To ensure the reliability of our findings, we consider the impact of observational limita…

Constraining the Milky Way Halo Accretion History With Simulated Stellar Halos: Designing the HALO7D-X Survey
Miranda Apfel, Kevin A. McKinnon, Constance M. Rockosi, Puragra Guhathakurta, Kathryn V. Johnston
https://arxiv.org/abs/2507.05239

Constraining the Milky Way Halo Accretion History With Simulated Stellar Halos: Designing the HALO7D-X Survey
We present the design for HALO7D-X, a survey of the stellar halo to investigate the accretion history of the Milky Way. The survey will use a combination of Hubble Space Telescope (HST) and Gaia data for sky position and proper motions of faint stars (18

A Highly Carbon-Rich Dayside and Disequilibrium Chemistry in the Ultra-Hot Jupiter WASP-19b
Suman Saha, James S. Jenkins
https://arxiv.org/abs/2507.02797 h…

A Highly Carbon-Rich Dayside and Disequilibrium Chemistry in the Ultra-Hot Jupiter WASP-19b
Ultra-hot Jupiters (UHJs) offer exceptional opportunities for detailed atmospheric characterization via emission spectroscopy. Here we present a comprehensive analysis of the dayside atmosphere of WASP-19b$\unicode{x2014}$one of the shortest-period UHJs$\unicode{x2014}$using archival JWST NIRSpec/PRISM observations spanning 0.6-5.3 $μ$m. We report robust detections of H$_2$O (16.44 $σ$), CO (5.47 $σ$), and CO$_2$ (10.72 $σ$), along with marginal detections of CH$_4$ (3.76 $σ$) and C$_2$H$_…

Distance to the Galactic centre 7$^\prime$ halo from HI absorption
Debangan Maji, Subhashis Roy
https://arxiv.org/abs/2506.02799 https://

Distance to the Galactic centre 7$^\prime$ halo from HI absorption
Using archival data, we have made an HI absorption study of the 7$^\prime$ halo surrounding the Sgr A complex, observed towards the Galactic centre (GC) region. We find strong HI absorption near velocities of $-$53 km s$^{-1}$, which is due to the 3-kpc arm, placing it beyond 5 kpc from us. We further examined the HI absorption properties towards 5 different parts of the 7$^\prime$ halo. Absorption by +50 km s$^{-1}$ GC cloud is seen towards only 3 parts of the halo, but not towards the other 2…

Constraining the Origin of FRB 20121102A's Persistent Radio Source with Long-Term Radio Observations
Mohit Bhardwaj, Arvind Balasubramanian, Yasha Kaushal, Shriharsh P. Tendulkar
https://arxiv.org/abs/2506.23861

Constraining the Origin of FRB 20121102A's Persistent Radio Source with Long-Term Radio Observations
The persistent radio source (PRS) associated with FRB 20121102A, the first precisely localized repeating fast radio burst (FRB), provides key constraints on both its local environment and the nature of the underlying FRB engine. We present a seven-year (2016-2023) temporal analysis of the PRS, combining new uGMRT observations with archival data across L-band frequencies. We find no statistically significant long-term trend in its L-band flux density. The observed variability is consistent with …

A systematic search for AGN obscuration variability in the Chandra archive
Isaiah S. Cox, N\'uria Torres-Alb\`a, Stefano Marchesi, Vittoria E. Gianolli, Xiurui Zhao, Marco Ajello, Indrani Pal, Ross Silver
https://arxiv.org/abs/2506.04457

A systematic search for AGN obscuration variability in the Chandra archive
The nature of the obscuring material in active galactic nuclei (AGN) can be studied by measuring changes in the line-of-sight column density, $N_{\rm H,los}$, over time. This can be accomplished by monitoring AGN over long periods of time and at all timescales. However, this can only be done for a few selected objects as it is resource intensive. Therefore, the best option currently is to focus on population statistics based on the available archival data. In this work, we estimate a lower limi…

This https://arxiv.org/abs/2502.04080 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

AT 2018dyk: tidal disruption event or active galactic nucleus? Follow-up observations of an extreme coronal line emitter with the Dark Energy Spectroscopic Instrument
We present fresh insights into the nature of the tidal disruption event (TDE) candidate AT 2018dyk. AT 2018dyk has sparked a debate in the literature around its classification as either a bona-fide TDE or as an active galactic nucleus (AGN) turn-on state change. A new follow-up spectrum taken with the Dark Energy Spectroscopic Instrument, in combination with host-galaxy analysis using archival SDSS-MaNGA data, supports the identification of AT 2018dyk as a TDE. Specifically, we classify this ob…

A chemical close-up of the main body of the Sagittarius dwarf galaxy
Alessio Liberatori, Deimer Antonio Alvarez Garay, Marco Palla, Alessio Mucciarelli, Michele Bellazzini, Donatella Romano
https://arxiv.org/abs/2506.02476

A chemical close-up of the main body of the Sagittarius dwarf galaxy
We present the chemical composition of a sample of 37 red giant branch (RGB) stars belonging to the main body of the remnant of the Sagittarius (Sgr) dwarf spheroidal galaxy. All stars were observed with the FLAMES-UVES high-resolution spectrograph. Twenty-three new targets are selected along the blue side of the RGB of Sgr, but outside the galaxy stellar nucleus, in order to avoid contamination by the stars of the metal-poor globular cluster M54. Additionally, we re-analyzed archival spectra o…

A catalog of molecular clouds possibly associated with Galactic infrared bubbles I. The Southern Galactic plane
Mikito Kohno, Yoshiaki Sofue, Yasuo Fukui, Kengo Tachihara
https://arxiv.org/abs/2507.01222

A catalog of molecular clouds possibly associated with Galactic infrared bubbles I. The Southern Galactic plane
We have carried out a morphological search for molecular clouds possibly associated with 48 Galactic infrared bubbles with angular radii of $>1'$ in the southern Galactic plane of $295^\circ \le l\le 350^\circ$ and $|b|\le 1^\circ$ presented by Hanaoka et al. (2019). 116 molecular clouds in the $(l,b,V_{\rm LSR})$ space are identified from the archival $^{12}$CO~$J$~=~1--0 line data obtained by the Mopra Southern Galactic plane survey, where $V_{\rm LSR}$ is the CO-line radial velocit…