794 citations · 10k across the 110 of their papers we have counts for
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Global Properties of M31's Stellar Halo from the SPLASH Survey. I. Surface Brightness Profile
Karoline M. Gilbert, Puragra Guhathakurta, Rachael L. Beaton +10
We present the surface brightness profile of M31's stellar halo out to a projected radius of 175 kpc. The surface brightness estimates are based on confirmed samples of M31 red gia…
Detailed Abundances of Two Very Metal-Poor Stars in Dwarf Galaxies
Evan N. Kirby, Judith G. Cohen
The most metal-poor stars in dwarf spheroidal galaxies (dSphs) can show the nucleosynthetic patterns of one or a few supernovae. These supernovae could have zero metallicity, makin…
The Bizarre Chemical Inventory of NGC 2419, An Extreme Outer Halo Globular Cluster
Judith G. Cohen, Evan N. Kirby
We present new Keck/HIRES observations of six red giants in the globular cluster NGC 2419. Although the cluster is among the most distant and most luminous in the Milky Way, it was…
Two Distant Halo Velocity Groups Discovered by the Palomar Transient Factory
B. Sesar, J. G. Cohen, D. Levitan +8
We report the discovery of two new halo velocity groups (Cancer groups A and B) traced by 8 distant RR Lyrae stars and observed by the Palomar Transient Factory (PTF) survey at R.A…
A unique isolated dwarf spheroidal galaxy at D=1.9 Mpc
Dmitry Makarov, Lidia Makarova, Margarita Sharina +5
We present a photometric and spectroscopic study of the unique isolated nearby dSph galaxy KKR25. The galaxy was resolved into stars with HST/WFPC2 including old red giant branch a…
The Primeval Populations of the Ultra-Faint Dwarf Galaxies
Thomas M. Brown, Jason Tumlinson, Marla Geha +9
We present new constraints on the star formation histories of the ultra-faint dwarf (UFD) galaxies, using deep photometry obtained with the Hubble Space Telescope (HST). A galaxy c…
Discovery of Super-Li Rich Red Giants in Dwarf Spheroidal Galaxies
Evan Kirby, Xiaoting Fu, Puragra Guhathakurta +1
Stars destroy lithium (Li) in their normal evolution. The convective envelopes of evolved red giants reach temperatures of millions of K, hot enough for the 7Li(p,alpha)4He reactio…
The DEEP2 Galaxy Redshift Survey: Design, Observations, Data Reduction, and Redshifts
Jeffrey A. Newman, Michael C. Cooper, Marc Davis +31
We describe the design and data sample from the DEEP2 Galaxy Redshift Survey, the densest and largest precision-redshift survey of galaxies at z ~ 1 completed to date. The survey h…
The Dynamics and Metallicity Distribution of the Distant Dwarf Galaxy VV124
Evan N. Kirby, Judith G. Cohen, Michele Bellazzini
VV124 (UGC 4879) is an isolated, dwarf irregular/dwarf spheroidal (dIrr/dSph) transition-type galaxy at a distance of 1.36 Mpc. Previous low-resolution spectroscopy yielded inconsi…
Internal Stellar Kinematics of M32 from the SPLASH Survey: Dark Halo Constraints and the Formation of Compact Elliptical Galaxies
Kirsten Howley, Puragra Guhathakurta, Roeland van der Marel +6
As part of the SPLASH survey of the Andromeda galaxy (M31) and its neighbors, we have obtained Keck/DEIMOS spectra of the compact elliptical (cE) satellite M32. This is the first r…
Characterizing the Cool KOIs III. KOI-961: A Small Star with Large Proper Motion and Three Small Planets
Philip S. Muirhead, John Asher Johnson, Kevin Apps +21
We present the characterization of the star KOI 961, an M dwarf with transit signals indicative of three short-period exoplanets, originally discovered by the Kepler Mission. We pr…