Publications (26)
Revealing strong bias in common measures of galaxy properties using new inclination-independent structures
Brian Devour, Eric Bell
Accurate measurement of galaxy structures is a prerequisite for quantitative investigation of galaxy properties or evolution. Yet, the impact of galaxy inclination and dust on comm…
The role of mass loss in constraining quenching time in dwarf galaxies from AGB and RGB star counts
Paolo Ventura, Richard D'Souza, Flavia Dell'Agli +4
The capability of reconstructing the past star formation history of dwarf elliptical galaxies out of the Local Volume relies on modelling bright stellar populations currently evolv…
Observational constraints on the merger history of galaxies since : Probabilistic galaxy pair counts in the CANDELS fields
Kenneth Duncan, Christopher J. Conselice, Carl Mundy +13
Galaxy mergers are expected to have a significant role in the mass assembly of galaxies in the early Universe, but there are very few observational constraints on the merger histor…
Dark Matter and Stellar Mass in the Luminous Regions of Disk Galaxies
James Pizagno, Francisco Prada, David H. Weinberg +7
We investigate the correlations among stellar mass (M_*), disk scale length (R_d), and rotation velocity at 2.2 disk scale lengths (V_2.2) for a sample of 81 disk-dominated galaxie…
The LEGA-C of nature and nurture in stellar populations of galaxies at z~0.6-1.0: D4000 and H-delta reveal different assembly histories for quiescent galaxies in different environments
David Sobral, Arjen van der Wel, Rachel Bezanson +11
Galaxy evolution is driven by a variety of physical processes which are predicted to proceed at different rates for different dark matter haloes and environments across cosmic time…
Structure of Disk Dominated Galaxies: II. Color Gradients and Stellar Population Models
Lauren A. MacArthur, Stephane Courteau, Eric Bell +1
(Abridged) We investigate optical and near-IR color gradients in a sample of 172 low-inclination galaxies spanning Hubble types S0--Irr. The colors are compared to stellar populati…
The masses and metallicities of stellar haloes reflect galactic merger histories
Richard D'Souza, Eric Bell
There is increasing observational and theoretical evidence for a correlation between the metallicity and the mass of the stellar halo for galaxies with Milky Way-like stellar masse…
Environmental Burden of United States Data Centers in the Artificial Intelligence Era
Gianluca Guidi, Francesca Dominici, Jonathan Gilmour +4
The rapid proliferation of data centers in the US - driven partly by the adoption of artificial intelligence - has set off alarm bells about the industry's environmental impact. We…
Global dust attenuation in disc galaxies: strong variation with specific star formation and stellar mass, and the importance of sample selection
Brian Devour, Eric Bell
We study the relative dust attenuation-inclination relation in 78,721 nearby galaxies using the axis ratio dependence of optical-NIR colour, as measured by the Sloan Digital Sky Su…
The origin of the mass scales for maximal star formation efficiency and quenching: the critical role of Supernovae
Bruno Henriques, Simon White, Simon Lilly +3
We use the Henriques et al. (2015) version of the Munich galaxy formation model (L-GALAXIES) to investigate why the halo and stellar mass scales above which galaxies are quenched a…
Measuring, Predicting and Visualizing Short-Term Change in Word Representation and Usage in VKontakte Social Network
Ian Stewart, Dustin Arendt, Eric Bell +1
Language in social media is extremely dynamic: new words emerge, trend and disappear, while the meaning of existing words can fluctuate over time. Such dynamics are especially nota…
The Panchromatic Hubble Andromeda Treasury. VII. The Steep Mid-Ultraviolet to Near-Infrared Extinction Curve in the Central 200 pc of the M31 Bulge
Hui Dong, Zhiyuan Li, Q. Daniel Wang +8
We measure the extinction curve in the central 200 pc of M31 at mid-ultraviolet to near-infrared wavelengths (from 1928A to 1.5μm), using Swift/UVOT and HST WFC3/ACS observations…
Characterizing dw1335-29, a recently discovered dwarf satellite of M83
Andreia Carrillo, Eric Bell, Jeremy Bailin +4
The number, distribution, and properties of dwarf satellites are crucial probes of the physics of galaxy formation at low masses and the response of satellite galaxies to the tidal…
Understanding the Astrophysics of Galaxy Evolution: the role of spectroscopic surveys in the next decade
Eric Bell, Marc Davis, Arjun Dey +24
Over the last decade optical spectroscopic surveys have characterized the low redshift galaxy population and uncovered populations of star-forming galaxies back to z ~ 7. This work…
The LEGA-C and SAMI Galaxy Surveys: Quiescent Stellar Populations and the Mass-Size Plane across 6 Gyr
Tania M. Barone, Francesco D'Eugenio, Nicholas Scott +22
We investigate the change in mean stellar population age and metallicity ([Z/H]) scaling relations for quiescent galaxies from intermediate redshift () using th…
Comparing Dynamical and Stellar Population Mass-to-Light Ratio Estimates
Roelof S. de Jong, Eric Bell
We investigate the mass-to-light ratios of stellar populations as predicted by stellar population synthesis codes and compare those to dynamical/gravitational measurements. In Bell…
CEERS: 7.7 m PAH Star Formation Rate Calibration with JWST MIRI
Kaila Ronayne, Casey Papovich, Guang Yang +33
We test the relationship between UV-derived star formation rates (SFRs) and the 7.7 m polycyclic aromatic hydrocarbon (PAH) luminosities from the integrated emission of galaxie…
Panchromatic Hubble Andromeda Treasury XII. Mapping Stellar Metallicity Distributions in M31
Dylan Gregersen, Anil C. Seth, Benjamin F. Williams +14
We present a study of spatial variations in the metallicity of old red giant branch stars in the Andromeda galaxy. Photometric metallicity estimates are derived by interpolating is…
Assessing the Carbon Emissions and Energy Consumption of U.S. Hyperscale Data Centers
Gianluca Guidi, Francesca Dominici, Tiziano Squartini +6
The rapid proliferation of hyperscale data centers (HDCs) in the US, mainly driven by the adoption of artificial intelligence, has raised concerns about this industry's environment…
Molecular Gas Contents and Scaling Relations for Massive Passive Galaxies at Intermediate Redshifts from the LEGA-C Survey
Justin Spilker, Rachel Bezanson, Ivana Barisic +13
A decade of study has established that the molecular gas properties of star-forming galaxies follow coherent scaling relations out to z~3, suggesting remarkable regularity of the i…
Stellar Kinematics and Environment at z~0.8 in the LEGA-C Survey: Massive, Slow-Rotators are Built First in Overdense Environments
Justin Cole, Rachel Bezanson, Arjen van der Wel +11
In this letter, we investigate the impact of environment on integrated and spatially-resolved stellar kinematics of a sample of massive, quiescent galaxies at intermediate redshift…
Addressing Decadal Survey Science through Community Access to Highly Multiplexed Spectroscopy with BigBOSS on the KPNO Mayall Telescope
Caty Pilachowski, Carles Badenes, Stephen Bailey +87
This document summarizes the results of a community-based discussion of the potential science impact of the Mayall+BigBOSS highly multiplexed multi-object spectroscopic capability.…
Exploring the interaction between the MW and LMC with a large sample of blue horizontal branch stars from the DESI survey
Amanda Byström, Sergey E. Koposov, Sophia Lilleengen +42
The Large Magellanic Cloud (LMC) is a Milky Way (MW) satellite that is massive enough to gravitationally attract the MW disc and inner halo, causing significant motion of the inner…
Detailed study of the Milky Way globular cluster Laevens 3
Nicolas Longeard, Nicolas Martin, Rodrigo A. Ibata +4
We present a photometric and spectroscopic study of the Milky Way satellite Laevens 3. Using MegaCam/CFHT g and i photometry and Keck II/DEIMOS multi-object spectroscopy, we refine…
The supernova rate-velocity dispersion relation in the interstellar medium
Sami Dib, Eric Bell, Andreas Burkert
We investigate the relationship between the velocity dispersion of the gas and the SN rate and feedback efficiency in the ISM. We explore the constancy of the velocity dispersion p…
A Critical Assessment of Stellar Mass Measurement Methods
Bahram Mobasher, Tomas Dahlen, Henry C. Ferguson +34
In this paper we perform a comprehensive study of the main sources of random and systematic errors in stellar mass measurement for galaxies using their Spectral Energy Distribution…