3.5k citations · 42.3k across the 239 of their papers we have counts for
11 papers · 2 filters
Stars made in outflows may populate the stellar halo of the Milky Way
Sijie Yu, James S. Bullock, Andrew Wetzel +8
We study stellar-halo formation using six Milky Way-mass galaxies in FIRE-2 cosmological zoom simulations. We find that of the outer ( kpc) stellar halo in each sy…
Star formation at the edge of the Local Group: a rising star formation history in the isolated galaxy WLM
Saundra M. Albers, Daniel R. Weisz, Andrew A. Cole +11
We present the star formation history (SFH) of the isolated (D~970 kpc) Local Group dwarf galaxy WLM measured from color-magnitude diagrams constructed from deep Hubble Space Teles…
The Halos and Environments of Nearby Galaxies (HERON) I: Imaging, Sample Characteristics, and Envelope Diameters
R. Michael Rich, Aleksandr Mosenkov, Henry Lee-Saunders +16
We use a dedicated 0.7-m telescope to image the halos of 119 galaxies in the Local Volume to mag/arcsec. The sample is primarily from the 2MASS Large Galaxy At…
Accurate mass estimates from the proper motions of dispersion-supported galaxies
Alexandres Lazar, James S. Bullock
Starting with the spherical Jeans equation, we show that there exists a radius where the mass enclosed depends only on the projected tangential velocity dispersion, assuming that t…
Characterizing the Infall Times and Quenching Timescales of Milky Way Satellites with Proper Motions
Sean P. Fillingham, Michael C. Cooper, Tyler Kelley +6
Observations of low-mass satellite galaxies in the nearby Universe point towards a strong dichotomy in their star-forming properties relative to systems with similar mass in the fi…
A profile in FIRE: resolving the radial distributions of satellite galaxies in the Local Group with simulations
Jenna Samuel, Andrew Wetzel, Erik Tollerud +9
While many tensions between Local Group (LG) satellite galaxies and LCDM cosmology have been alleviated through recent cosmological simulations, the spatial distribution of satelli…
Star formation histories of dwarf galaxies in the FIRE simulations: dependence on mass and Local Group environment
Shea Garrison-Kimmel, Andrew Wetzel, Phillip F. Hopkins +13
We study star formation histories (SFHs) of dwarf galaxies (stellar mass ) from FIRE-2 cosmological zoom-in simulations. We compare dwarf…
Do halos that form early, have high concentration, are part of a pair, or contain a central galaxy potential host more pronounced planes of satellite galaxies?
Marcel S. Pawlowski, James S. Bullock, Tyler Kelley +1
The Milky Way, the Andromeda galaxy, and Centaurus A host flattened distributions of satellite galaxies which exhibits coherent velocity trends indicative of rotation. Comparably e…
Understanding the circumgalactic medium is critical for understanding galaxy evolution
Molly S. Peeples, Peter Behroozi, Rongmon Bordoloi +69
Galaxies evolve under the influence of gas flows between their interstellar medium and their surrounding gaseous halos known as the circumgalactic medium (CGM). The CGM is a major…
The Milky Way's Halo and Subhalos in Self-Interacting Dark Matter
Victor H. Robles, Tyler Kelley, James S. Bullock +1
We perform high-resolution simulations of a MW-like galaxy in a self-interacting cold dark matter model with elastic cross section over mass of (SIDM) and compare to…
A Predicted Correlation Between Age Gradient and Star Formation History in FIRE Dwarf Galaxies
Andrew S. Graus, James S. Bullock, Alex Fitts +9
We explore the radial variation of star formation histories in dwarf galaxies simulated with Feedback In Realistic Environments (FIRE) physics. The sample contains 9 low-mass field…