Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Courteau, Stephane"'
Autor:
Patel, Raj, Arora, Nikhil, Courteau, Stéphane, Stone, Connor, Frosst, Matthew, Widrow, Lawrence
The Universal Rotation Curve (URC) of disk galaxies was originally proposed to predict the shape and amplitude of any rotation curve (RC) based solely on photometric data. Here, the URC is investigated with an extensive set of spatially-resolved rota
Externí odkaz:
http://arxiv.org/abs/2406.11987
The dark balance: quantifying the inner halo response to active galactic nuclei feedback in galaxies
Autor:
Arora, Nikhil, Courteau, Stephane, Maccio, Andrea V., Cho, Changhyun, Patel, Raj, Stone, Connor
This paper presents a study of the impact of supermassive black hole (SMBH) feedback on dark matter (DM) halos in numerical NIHAO simulations of galaxies. In particular, the amount of DM displaced via active galactic nuclei (AGN) feedback and the phy
Externí odkaz:
http://arxiv.org/abs/2403.02375
Autor:
Stone, Connor, Courteau, Stephane, Cuillandre, Jean-Charles, Hezaveh, Yashar, Perreault-Levasseur, Laurence, Arora, Nikhil
We present AstroPhot, a fast, powerful, and user-friendly Python based astronomical image photometry solver. AstroPhot incorporates automatic differentiation and GPU (or parallel CPU) acceleration, powered by the machine learning library PyTorch. Eve
Externí odkaz:
http://arxiv.org/abs/2308.01957
We present a catalogue of dynamical properties for 2368 late-type galaxies from the MaNGA survey. The latter complements the catalogue of photometric properties for the same sample based on deep optical DESI photometry processed with AutoProf. Rotati
Externí odkaz:
http://arxiv.org/abs/2304.02033
Publikováno v:
ApJS 262 33 (2022)
We present the Photometry and Rotation Curve Observations from Extragalactic Surveys (PROBES) compendium of extended rotation curves for 3163 late-type spirals, with matching homogeneous multiband photometry for 1677 of them. PROBES rotation curves o
Externí odkaz:
http://arxiv.org/abs/2209.09912
Autor:
Díaz-García, Simón, Comerón, Sébastien, Courteau, Stéphane, Watkins, Aaron E., Knapen, Johan H., Román, Javier
Publikováno v:
A&A 667, A109 (2022)
Thin and thick disks are found in most spiral galaxies, yet their formation scenarios remain uncertain. Whether thick disks form through slow or fast, internal or environmental, processes is unclear. The physical origin of outer truncations in thin a
Externí odkaz:
http://arxiv.org/abs/2208.13527
Autor:
Ouellette, Nathalie N. -Q., Courteau, Stéphane, Holtzman, Jon A., McDonald, Michael, Cappellari, Michele, Roediger, Joel C., Côté, Patrick, Dalcanton, Julianne J., Bontà, Elena Dalla, Ferrarese, Laura, Tully, R. Brent, Stone, Connor, Peng, Eric W.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 514, Issue 2, August 2022, Pages 2356-2375
The ``Spectroscopy and H-band Imaging of Virgo cluster galaxies'' (SHIVir) survey is an optical and near-infrared survey which combines SDSS photometry, deep H-band photometry, and long-slit optical spectroscopy for 190 Virgo cluster galaxies (VCGs)
Externí odkaz:
http://arxiv.org/abs/2206.12431
Autor:
Frosst, Matthew, Courteau, Stéphane, Arora, Nikhil, Stone, Connor, Macciò, Andrea V., Blank, Marvin
An extensive catalog of spatially-resolved galaxy rotation curves and multi-band optical light profiles for 1752 observed spiral galaxies is assembled to explore the drivers of diversity in galaxy structural parameters, rotation curve shapes, and ste
Externí odkaz:
http://arxiv.org/abs/2204.02412
Autor:
Smith, Michael J., Geach, James E., Jackson, Ryan A., Arora, Nikhil, Stone, Connor, Courteau, Stéphane
We show that a Denoising Diffusion Probabalistic Model (DDPM), a class of score-based generative model, can be used to produce realistic mock images that mimic observations of galaxies. Our method is tested with Dark Energy Spectroscopic Instrument (
Externí odkaz:
http://arxiv.org/abs/2111.01713
Autor:
Arora, Nikhil, Macció, Andrea V., Courteau, Stéphane, Buck, Tobias, Libeskind, Noam I., Sorce, Jenny G., Brook, Chris B., Hoffman, Yehuda, Yepes, Gustavo, Carlesi, Eduardo, Stone, Connor
Recent observational and theoretical studies of the Local Group (LG) dwarf galaxies have highlighted their unique star-formation history, stellar metallicity, gas content, and kinematics. We investigate the commonality of these features by comparing
Externí odkaz:
http://arxiv.org/abs/2109.07487