2.9k citations · 37.8k across the 255 of their papers we have counts for
12 papers · 2 filters
Are the Formation and Abundances of Metal-Poor Stars the Result of Dust Dynamics?
Philip F. Hopkins, Charlie Conroy
Large dust grains can fluctuate dramatically in their local density, relative to gas, in neutral, turbulent disks. Small, high-redshift galaxies (before reionization) represent ide…
Ubiquitous Time Variability of Integrated Stellar Populations
Charlie Conroy, Pieter van Dokkum, Jieun Choi
Long period variable stars arise in the final stages of the asymptotic giant branch phase of stellar evolution. They have periods of up to ~1000d and amplitudes that can exceed a f…
Stellar populations of stellar halos: Results from the Illustris simulation
B. A. Cook, C. Conroy, A. Pillepich +1
The influence of both major and minor mergers is expected to significantly affect gradients of stellar ages and metallicities in the outskirts of galaxies. Measurements of observed…
The IMF-sensitive 1.14-micron Na I doublet in early-type galaxies
Russell J. Smith, Padraig Alton, John R. Lucey +2
We present J-band spectroscopy of passive galaxies focusing on the Na I doublet at 1.14 μm. Like the Na I 0.82 μm doublet, this feature is strong in low-mass stars and hence may pr…
Hiding in plain sight: record-breaking compact stellar systems in the Sloan Digital Sky Survey
Michael A. Sandoval, Richard P. Vo, Aaron J. Romanowsky +10
Motivated by the recent, serendipitous discovery of the densest known galaxy, M60-UCD1, we present two initial findings from a follow-up search, using the Sloan Digital Sky Survey,…
APOGEE chemical tagging constraint on the maximum star cluster mass in the -enhanced Galactic disk
Yuan-Sen Ting, Charlie Conroy, Hans-Walter Rix
Stars born from the same molecular cloud should be nearly homogeneous in their element abundances. The concept of chemical tagging is to identify members of disrupted clusters by t…
Prospects for chemically tagging stars in the Galaxy
Yuan-Sen Ting, Charlie Conroy, Alyssa Goodman
It is now well-established that the elemental abundance patterns of stars holds key clues not only to their formation but also to the assembly histories of galaxies. One of the mos…
Stellar Populations of Barred Quiescent Galaxies
Edmond Cheung, Charlie Conroy, E. Athanassoula +10
Selecting centrally quiescent galaxies from the Sloan Digital Sky Survey (SDSS) to create high signal-to-noise (>100) stacked spectra with minimal emission line contamination, we a…
Beacons In the Dark: Using Novae and Supernovae to Detect Dwarf Galaxies in the Local Universe
Charlie Conroy, James S. Bullock
We propose that luminous transients, including novae and supernovae, can be used to detect the faintest galaxies in the universe. Beyond a few Mpc, dwarf galaxies with stellar mass…
Spectroscopic Confirmation of the Existence of Large, Diffuse Galaxies in the Coma Cluster
Pieter van Dokkum, Aaron Romanowsky, Roberto Abraham +6
We recently identified a population of low surface brightness objects in the field of the z=0.023 Coma cluster, using the Dragonfly Telephoto Array. Here we present Keck spectrosco…
Circumstellar Dust Around AGB Stars and Implications for Infrared Emission from Galaxies
Alexa Villaume, Charlie Conroy, Benjamin Johnson
Stellar population synthesis (SPS) models are used to infer many galactic properties including star formation histories, metallicities, and stellar and dust masses. However, most S…
The SINFONI Nearby Elliptical Lens Locator Survey: Discovery of two new low-redshift strong lenses and implications for the initial mass function in giant early-type galaxies
Russell J. Smith, John R. Lucey, Charlie Conroy
We present results from a blind survey to identify strong gravitational lenses among the population of low-redshift early-type galaxies. The SINFONI Nearby Elliptical Lens Locator…