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8 papers · 2 filters
Core Formation in Dwarf Halos with Self Interacting Dark Matter: No Fine-Tuning Necessary
Oliver D. Elbert, James S. Bullock, Shea Garrison-Kimmel +3
We investigate the effect of self-interacting dark matter (SIDM) on the density profiles of isolated dwarf dark matter halos -- the scale of relev…
The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
Mariska Kriek, Alice E. Shapley, Naveen A. Reddy +21
In this paper we present the MOSFIRE Deep Evolution Field (MOSDEF) survey. The MOSDEF survey aims to obtain moderate-resolution (R=3000-3650) rest-frame optical spectra (~3700-7000…
Global Properties of M31's Stellar Halo from the SPLASH Survey: II. Metallicity Profile
Karoline M. Gilbert, Jason S. Kalirai, Puragra Guhathakurta +9
We present the metallicity distribution of red giant branch (RGB) stars in M31's stellar halo, derived from photometric metallicity estimates for over 1500 spectroscopically confir…
The Mass Dependance of Satellite Quenching in Milky Way-like Halos
John I. Phillips, Coral Wheeler, Michael C. Cooper +3
Using the Sloan Digital Sky Survey, we examine the quenching of satellite galaxies around isolated Milky Way-like hosts in the local Universe. We find that the efficiency of satell…
Too Big to Fail in the Local Group
Shea Garrison-Kimmel, Michael Boylan-Kolchin, James S. Bullock +1
We compare the dynamical masses of dwarf galaxies in the Local Group (LG) to the predicted masses of halos in the ELVIS suite of CDM simulations, a sample of 48 Galaxy-size host…
M31 Satellite Masses Compared to LCDM Subhaloes
Erik J. Tollerud, Michael Boylan-Kolchin, James S. Bullock
We compare the kinematics of M31's satellite galaxies to the mass profiles of the subhaloes they are expected to inhabit in LCDM. We consider the most massive subhaloes of an appro…
The surprising inefficiency of dwarf satellite quenching
Coral Wheeler, John I. Phillips, Michael C. Cooper +2
We study dwarf satellite galaxy quenching using observations from the Geha et al. (2012) NSA/SDSS catalog together with LCDM cosmological simulations to facilitate selection and in…
The dynamics of isolated Local Group galaxies
Evan N. Kirby, James S. Bullock, Michael Boylan-Kolchin +2
We measured velocities of 862 individual red giant stars in seven isolated dwarf galaxies in the Local Group: NGC 6822, IC 1613, VV 124 (UGC 4879), the Pegasus dwarf irregular gala…