Tootfinder

"This is all wrong. I shouldn't be up here. I should be back in school on the other side of the ocean. Yet you all come to us young people for hope. How dare you! You have stolen my dreams and my childhood with your empty words. And yet I'm one of the lucky ones. People are suffering. People are dying. Entire ecosystems are collapsing. We are in the beginning of a mass extinction, and all you can talk about is money and fairy tales of eternal economic growth. How dare you!"…

A Comprehensive Analysis of X-ray Sources in Terzan 5 Using Chandra Observations
Gourav Kumawat, Craig O. Heinke, Jiaqi Zhao, Arash Bahramian, Haldan N. Cohn, Phyllis M. Lugger
https://arxiv.org/abs/2508.02526

A Comprehensive Analysis of X-ray Sources in Terzan 5 Using Chandra Observations
We analyze photometry, spectra, and variability of over 100 faint X-ray sources in the globular cluster Terzan 5, using 737 ks of Chandra data. X-ray colors and spectral fitting allow clear separation of foreground sources (with less extinction than the cluster), quiescent low-mass X-ray binaries (qLMXBs), and sources with harder spectra. We identify 22 candidate qLMXBs, over twice that found in any other cluster. This is consistent with Terzan 5's stellar interaction rate, the highest among Ga…

Sieging HELM's deep: PRIMA unveils the far-infrared properties of highly extincted low-mass galaxies
Laura Bisigello, Carlotta Gruppioni, Giulia Rodighiero, Giovanni Gandolfi, James M. S. Donnellan, Seb Oliver, Stephen M. Wilkins, L. Y. Aaron Yung
https://arxiv.org/abs/2509.01305

Sieging HELM's deep: PRIMA unveils the far-infrared properties of highly extincted low-mass galaxies
Although the majority of star-forming galaxies show a tight correlation between stellar mass and dust extinction, recent James Webb Space Telescope observations have revealed a peculiar population of Highly Extincted Low-Mass (HELM) galaxies, which could revolutionise our understanding of dust production mechanisms. To fully understand the dust content of these galaxies, which are a minority of the overall galaxy population, far-infrared observations over large areas are pivotal. In this paper,…

"‘A climate of unparalleled malevolence’: are we on our way to the sixth major mass extinction?"
#Climate #ClimateChange

‘A climate of unparalleled malevolence’: are we on our way to the sixth major mass extinction? https://www.theguardian.com/environment/2025/aug/19/a-climate-of-unparalleled-malevolence-are-we-on-our-way-…

How Massive Star Clusters Form and Evolve: A Near-IR Survey of the W51 Complex
Aden Dawson, Adam Ginsburg, Carlos Roman-Zuniga
https://arxiv.org/abs/2507.23112 https://

How Massive Star Clusters Form and Evolve: A Near-IR Survey of the W51 Complex
We present near-infrared JHKs and narrow-band H2(1-0) photometric observations of the W51A region, obtained with GTC EMIR, aiming to characterize its young stellar population and provide mass estimates for individual cluster members and the proto-clusters. Our observations reveal over 3000 new sources, out of which 88 are located in the proto-clusters, W51 IRS2 and W51 Main. The average extinction (AV), measured from the J-H color, of sources is 19 AV in W51 IRS2 and 14 AV in W51 Main. We docum…

I thought this #Guardian / #WaPo piece by some Peter Brennan might be worth a glance, though expecting only 60% stuff everyone knows (or should know), and 40% tedious irrelevant human interest guff. Which just proves that you can never set one's expectations low enough.
Well, I made it as …

Tomographic Distance Measurements to the Smith Cloud with SDSS-V Milky Way Mapper3
Timothy McQuaid, Joseph N. Burchett, Kate H. R. Rubin, Felix J. Lockman, Andrew K. Saydjari, Philipp Richter, Andrew J. Fox, David L. Nidever, Jose G. Fernandez-Trincado, Jon A. Holtzman
https://arxiv.org/abs/2509.22555

Tomographic Distance Measurements to the Smith Cloud with SDSS-V Milky Way Mapper3
High velocity clouds supply the Milky Way with gas that sustains star formation over cosmic timescales. Precise distance measurements are therefore essential to quantify their mass inflow rates and gauge their exact contribution to the Galaxy's gas supply. We use a sample of 1,293 SDSS-V BOSS stellar spectra within 10 degrees of the high-velocity Smith Cloud (SC) to trace Na I absorption and dust extinction as functions of distance. By fitting ISM-corrected MaStar templates to each spectrum, we…

Many mass extinctions of Earth history were caused not by asteroids as they had expected, but by continent-spanning volcanic eruptions that injected catastrophic amounts of CO2 into the air and oceans.
Put enough CO2 into the system all at once, and push the life-sustaining carbon cycle far enough out of equilibrium, and it might escape into a sort of planetary failure mode, where processes intrinsic to the Earth itself take over, acting as positive feedback.
https://www.theguardian.com/environment/2025/aug/19/a-climate-of-unparalleled-malevolence-are-we-on-our-way-to-the-sixth-major-mass-extinction?CMP=Share_iOSApp_Other

Galaxy And Mass Assembly (GAMA): from filaments to voids, how extreme environment affects gas metallicity and SFR in galaxies
J. A. Molina-Calzada, M. A. Lara-L\'opez, J. Gallego, A. M. Hopkins, Benne W. Holwerda, A. R. L\'opez-S\'anchez
https://arxiv.org/abs/2507.06781

Galaxy And Mass Assembly (GAMA): from filaments to voids, how extreme environment affects gas metallicity and SFR in galaxies
We analyse the stellar mass-metallicity (M-Z) and stellar mass-star formation rate (M-SFR) relations for star-forming galaxies classified by their environment and compare them with matched control samples of field galaxies. Using data from the Galaxy And Mass Assembly (GAMA) survey and the filament catalogue, which categorises galaxies into filaments, tendrils, and voids, we correct emission lines for dust extinction and select star-forming galaxies based on the BPT diagram. Metallicity and sta…

A kinematic and structural study of young open clusters in the Milky Way Galaxy using Gaia DR3 catalogue
Harsha K. H., Annapurni Subramaniam, S. R. Dhanush, Hariharan D. S
https://arxiv.org/abs/2507.13069

A kinematic and structural study of young open clusters in the Milky Way Galaxy using Gaia DR3 catalogue
We aim to identify the cluster members, estimate cluster properties, study the dynamical state of the clusters as a function of mass, trace the existence of dynamical effects in massive stars, and check for spatial patterns of members in young clusters. We studied 14 young open clusters located within 1 kpc using the data from Gaia DR3 with the membership estimated using the GMM method. The cluster parameters such as age, distance, metallicity, and extinction were estimated by fitting PARSEC is…

JWST/NIRCam imaging of the Bipolar Planetary Nebula NGC 6537: the (Infra)red Spider, Revealed
Joel Kastner (Rochester Institute of Technology, USA), Paula Moraga Baez (RIT), Bruce Balick (University of Washington, USA), Rodolfo Montez Jr. (CfA/SAO, USA), Caroline Geiser (Max Planck Institute, Germany), Mikako Matsuura (Cardiff University, UK), Jason Nordhaus (RIT), Miguel Santander-Garcia (OAN, Spain)

JWST/NIRCam imaging of the Bipolar Planetary Nebula NGC 6537: the (Infra)red Spider, Revealed
We present James Webb Space Telescope (JWST) near-infrared (NIRCam) Br$α$, H$_2$, [Fe II], and PAH imaging of the molecule-rich, high-excitation bipolar planetary nebula (PN) NGC 6537 (the Red Spider), complemented by new ALMA and Chandra observations and archival HST images. The resulting multiwavelength view of the Red Spider establishes the detailed lobe/torus structure of the nebula and the mass-loss history of its progenitor star. The extinction-penetrating JWST/NIRCam Br$α$ and PAH and …