454 citations · 7.2k across the 161 of their papers we have counts for
9 papers · 1 filter
Identical or fraternal twins? : The chemical homogeneity of wide binaries from Gaia DR2
Keith Hawkins, Madeline Lucey, Yuan-Sen Ting +7
One of the high-level goals of Galactic archaeology is chemical tagging of stars across the Milky Way to piece together its assembly history. For this to work, stars born together…
The Fates of the Circumgalactic Medium in the FIRE Simulations
Z. Hafen, C. -A. Faucher-Giguere, D. Angles-Alcazar +7
We analyze the different fates of the circumgalactic medium (CGM) in FIRE-2 cosmological simulations, focusing on the redshifts z=0.25 and z=2 representative of recent surveys. Our…
The Separation Distribution of Ultra-Wide Binaries across Galactic Populations
Hai-Jun Tian, Kareem El-Badry, Hans-Walter Rix +1
We present an extensive sample of ultra-wide binary stars in the solar neighborhood, focusing on separations of . Using data from Gaia DR2, we define kinematic sub-p…
Dark and luminous satellites of LMC-mass galaxies in the FIRE simulations
Ethan D. Jahn, Laura V. Sales, Andrew Wetzel +5
Within CDM, dwarf galaxies like the Large Magellanic Cloud (LMC) are expected to host numerous dark matter subhalos, several of which should host faint dwarf companions. Recent…
Discovery of an equal-mass "twin" binary population reaching 1000+ AU separations
Kareem El-Badry, Hans-Walter Rix, Haijun Tian +2
We use a homogeneous catalog of 42,000 main-sequence wide binaries identified by Gaia to measure the mass ratio distribution, p(q), of binaries with primary masses $0.1<M_1/M_{\odo…
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…
AGN All the Way Down? AGN-like Line Ratios are Common In the Lowest-Mass Isolated Quiescent Galaxies
C. Dickey, M. Geha, A. Wetzel +1
We investigate the lowest-mass quiescent galaxies known to exist in isolated environments (; 1.5 Mpc from a more massive galaxy). This popula…
Evolution of supernovae-driven superbubbles with conduction and cooling
Kareem El-Badry, Eve C. Ostriker, Chang-Goo Kim +2
We use spherically symmetric hydrodynamic simulations to study the dynamical evolution and internal structure of superbubbles (SBs) driven by clustered supernovae (SNe), focusing o…