46 citations · 268 across the 15 of their papers we have counts for
15 papers
WALLABY Pilot Survey: Gas-Rich Galaxy Scaling Relations from Marginally-Resolved Kinematic Models
N. Deg, N. Arora, K. Spekkens +21
We present the first set of galaxy scaling relations derived from kinematic models of the Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) pilot phase observations. Com…
The Nearly Universal Disk Galaxy Rotation Curve
Raj Patel, Nikhil Arora, Stéphane Courteau +3
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, th…
The dark balance: quantifying the inner halo response to active galactic nuclei feedback in galaxies
Nikhil Arora, Stephane Courteau, Andrea V. Maccio +3
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…
AstroPhot: Fitting Everything Everywhere All at Once in Astronomical Images
Connor Stone, Stephane Courteau, Jean-Charles Cuillandre +3
We present AstroPhot, a fast, powerful, and user-friendly Python based astronomical image photometry solver. AstroPhot incorporates automatic differentiation and GPU (or parallel C…
MaNGA galaxy properties -- II. A detailed comparison of observed and simulated spiral galaxy scaling relations
Nikhil Arora, Stéphane Courteau, Connor Stone +1
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…
PROBES-I: A Compendium of Deep Rotation Curves and Matched multiband Photometry
Connor Stone, Stephane Courteau, Nikhil Arora +2
We present the Photometry and Rotation Curve Observations from Extragalactic Surveys (PROBES) compendium of extended rotation curves for 3163 late-type spirals, with matching homog…
The diversity of spiral galaxies explained
Matthew Frosst, Stéphane Courteau, Nikhil Arora +3
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 div…
Realistic galaxy image simulation via score-based generative models
Michael J. Smith, James E. Geach, Ryan A. Jackson +3
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 gala…
NIHAO-LG: The uniqueness of Local Group dwarf galaxies
Nikhil Arora, Andrea V. Macció, Stéphane Courteau +8
Recent observational and theoretical studies of the Local Group (LG) dwarf galaxies have highlighted their unique star-formation history, stellar metallicity, gas content, and kine…
AutoProf -- I. An automated non-parametric light profile pipeline for modern galaxy surveys
Connor Stone, Nikhil Arora, Stéphane Courteau +1
We present an automated non-parametric light profile extraction pipeline called AutoProf. All steps for extracting surface brightness (SB) profiles are included in AutoProf, allowi…
MaNGA galaxy properties -- I. An extensive optical, mid-infrared photometric, and environmental catalogue
Nikhil Arora, Connor Stone, Stéphane Courteau +1
We present an extensive catalog of non-parametric structural properties derived from optical and mid-infrared imaging for 4585 galaxies from the MaNGA survey. DESI and WISE imaging…
The Intrinsic Scatter of Galaxy Scaling Relations
Connor Stone, Stéphane Courteau, Nikhil Arora
We present a compendium of disk galaxy scaling relations and a detailed characterization of their intrinsic scatter. Observed scaling relations are typically characterized by their…
Creating a galaxy lacking dark matter in a dark matter dominated universe
Andrea V. Macciò, Daniel Huterer Prats, Keri L. Dixon +5
We use hydrodynamical cosmological simulations to show that it is possible to create, via tidal interactions, galaxies lacking dark matter in a dark matter dominated universe. We s…
Pix2Prof: fast extraction of sequential information from galaxy imagery via a deep natural language 'captioning' model
Michael J. Smith, Nikhil Arora, Connor Stone +2
We present 'Pix2Prof', a deep learning model that can eliminate any manual steps taken when extracting galaxy profiles. We argue that a galaxy profile of any sort is conceptually s…
On The Role of Supermassive Black Holes in Quenching Star Formation in Local Central Galaxies
Nikhil Arora, Matteo Fossati, Fabio Fontanot +2
In this work, we analyze the role of AGN feedback in quenching star formation for massive, central galaxies in the local Universe. In particular, we compare the prediction of two s…