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- Massachusetts Institute of TechnologyUS277 papers
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4 papers · 2 filters
The Milky Way's circular velocity curve between 4 and 14 kpc from APOGEE data
Jo Bovy, Carlos Allende Prieto, Timothy C. Beers +30
We measure the Milky Way's rotation curve over the Galactocentric range 4 kpc <~ R <~ 14 kpc from the first year of data from the Apache Point Observatory Galactic Evolution Experi…
Radial Flows and Angular Momentum Conservation in Galactic Chemical Evolution
Thomas Bilitewski, Ralph Schönrich
We study the effects of radial flows on Galactic chemical evolution. A simple analytic scheme is developed prescribing the coupling of infall from the intergalactic medium and radi…
Principal Component Abundance Analysis of Microlensed Bulge Dwarf and Subgiant Stars
Brett H. Andrews, David H. Weinberg, Jennifer A. Johnson +2
Elemental abundance patterns can provide vital clues to the formation and enrichment history of a stellar population. Here we present an investigation of the Galactic bulge, where…
Detached Red Giant Eclipsing Binary Twins: Rosetta Stones to the Galactic Bulge
David M. Nataf, Andrew Gould, Marc H. Pinsonneault
We identify 34 highly-probable detached, red giant eclipsing binary pairs among 315 candidates in Devor's catalog of 10,000 OGLE-II eclipsing binaries. We estimate that there…