1k citations · 5.2k across the 51 of their papers we have counts for
6 papers · 1 filter
Very Metal-Poor Outer-Halo Stars with Round Orbits
Kohei Hattori, Yuzuru Yoshii, Timothy C. Beers +2
The orbital motions of halo stars in the Milky Way reflect the orbital motions of the progenitor systems in which they formed, making it possible to trace the mass-assembly history…
The Stellar Metallicity Distribution Function of the Galactic Halo from SDSS Photometry
Deokkeun An, Timothy C. Beers, Jennifer A. Johnson +6
We explore the stellar metallicity distribution function of the Galactic halo based on SDSS ugriz photometry. A set of stellar isochrones is calibrated using observations of severa…
High-Resolution Spectroscopy of Extremely Metal-Poor Stars from SDSS/SEGUE: I. Atmospheric Parameters and Chemical Compositions
Wako Aoki, Timothy C. Beers, Young Sun Lee +8
Chemical compositions are determined based on high-resolution spectroscopy for 137 candidate extremely metal-poor (EMP) stars selected from the Sloan Digital Sky Survey (SDSS) and…
A Short Scale Length for the α-Enhanced Thick Disk of the Milky Way: Evidence from Low-Latitude SEGUE Data
Judy Y. Cheng, Constance M. Rockosi, Heather L. Morrison +12
We examine the α-element abundance ratio, [α/Fe], of 5620 stars, observed by the Sloan Extension for Galactic Understanding and Exploration survey in the region 6 kpc < R < 16 kpc,…
Insight Into the Formation of the Milky Way Through Cold Halo Substructure. III. Statistical Chemical Tagging in the Smooth Halo
Kevin C. Schlaufman, Constance M. Rockosi, Young Sun Lee +5
We find that the relative contribution of satellite galaxies accreted at high redshift to the stellar population of the Milky Way's smooth halo increases with distance, becoming ob…
The vertical motions of mono-abundance sub-populations in the Milky Way disk
Jo Bovy, Hans-Walter Rix, David W. Hogg +3
We present the vertical kinematics of stars in the Milky Way's stellar disk inferred from SDSS/SEGUE G-dwarf data, deriving the vertical velocity dispersion, σ_z, as a function of…