Tootfinder

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…

#SilentSunday

Optimizing Cloud-to-GPU Throughput for Deep Learning With Earth Observation Data
Akram Zaytar, Caleb Robinson, Girmaw Abebe Tadesse, Tammy Glazer, Gilles Hacheme, Anthony Ortiz, Rahul M Dodhia, Juan M Lavista Ferres
https://arxiv.org/abs/2506.06235

Optimizing Cloud-to-GPU Throughput for Deep Learning With Earth Observation Data
Training deep learning models on petabyte-scale Earth observation (EO) data requires separating compute resources from data storage. However, standard PyTorch data loaders cannot keep modern GPUs utilized when streaming GeoTIFF files directly from cloud storage. In this work, we benchmark GeoTIFF loading throughput from both cloud object storage and local SSD, systematically testing different loader configurations and data parameters. We focus on tile-aligned reads and worker thread pools, usin…

This https://arxiv.org/abs/2503.16108 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Inclusive $\mathrm{D}^0$ photoproduction in ultraperipheral collisions
We compute the differential cross section for inclusive $\mathrm{D}^0$ production in ultraperipheral collisions within the Color Glass Condensate framework. Our predictions are found to be in relatively good agreement with the CMS data at small transverse momentum, which is the region of validity of our approach. Furthermore, we quantify saturation effects by a nuclear modification ratio $R_{pA}$ for $\mathrm{D}^0$ photoproduction and examine both analytically and numerically the collinear fact…

Series D, Episode 01 - Rescue
DORIAN: Exactly.
AVON: You really are insane, aren't you?
DORIAN: By now I probably would be.
AVON: If it wasn't for this mysterious room.
DORIAN: And what it contains.
SOOLIN: [Enters] And what might that be, Dorian?
https://blake.torpidity.net/m/401/467…

Blakes7Bot | Search
Companion site to the Blakes7Bot Twitter, Mastodon, and Bluesky accounts. Automated lines of Blakes 7 dialog. Includes a script search facility.

Yesterday attending a project strategy meeting for MaterialDigital at the Institute for microtribology. No, I don’t have any idea why they have put this in front of it😜
#pmd #materialsscience #mse

Analyzing Line-of-sight selection biases in galaxy-scale strong lensing with external convergence and shear
Xianzhe TZ Tang, Simon Birrer, Anowar J. Shajib, Narayan Khadka, the LSST Strong Gravitational Lensing Science Collaboration, the LSST Dark Energy Science Collaboration
https://arxiv.org/abs/2506.04201

Analyzing Line-of-sight selection biases in galaxy-scale strong lensing with external convergence and shear
The upcoming Vera Rubin Observatory Legacy Survey of Space and Time (LSST) will dramatically increase the number of strong gravitational lensing systems, requiring precise modeling of line-of-sight (LOS) effects to mitigate biases in lensing observations and cosmological inferences. We develop a method to construct joint distributions of external convergence ($κ_{\mathrm{ext}}$) and shear ($γ_{\mathrm{ext}}$) for strong lensing LOS by aggregating large-scale structure simulations with high-re…

This https://arxiv.org/abs/2407.09472 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Galaxy Mergers in the Epoch of Reionization I: A JWST Study of Pair Fractions, Merger Rates, and Stellar Mass Accretion Rates at $z = 4.5-11.5$
We present a full analysis of galaxy major merger pair fractions, merger rates, and mass accretion rates, thus uncovering the role of mergers in galaxy formation at the earliest previously unexplored epoch of $4.5

This https://arxiv.org/abs/2501.09060 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The COSMOS-Web deep galaxy group catalog up to $z=3.7$
Galaxy groups with $M_{tot} \lesssim 10^{14}$ $M_\odot$ and up to a few tens of members are the most common galaxy environment, marking the transition between field and massive clusters. Identifying groups plays a crucial role in understanding structure formation and galaxy evolution. Modern deep surveys allow us to build well-characterized samples of groups up to the regime where structures were taking shape. We aimed to build the largest deep catalog of galaxy groups to date over the COSMOS-W…

This https://arxiv.org/abs/2501.11099 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The JWST EXCELS survey: an extremely metal-poor galaxy at $z=8.271$ hosting an unusual population of massive stars
We present an analysis of the rest-frame optical ($λ\simeq 3100-5600 \,$Å) spectrum of a $\mathrm{log}_{10}(M_*/\mathrm{M_\odot}) = 8.6$ star-forming galaxy at $z=8.271$ (EXCELS-63107) from JWST/NIRSpec medium-resolution observations taken as part of the EXCELS survey. EXCELS-63107 is a compact object consistent with the size of local star-forming cluster complexes ($r_e < 200 \, \rm{pc}$) and has an extremely steep UV continuum measured from JWST/NIRCam photometry ($β=-3.3\pm0.3$). The JWST…