10/21 seminar: The Apache Point Observatory Galactic Evolution Experiment

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October 18th, 2013

Astrophysics Seminar Series

Status of the Apache Point Observatory Galactic Evolution Experiment (APOGEE) and Its Successor, APOGEE-2

Steven R. Majewski
University of Virginia

Monday, October 21, 2013
Refreshments at 3:15pm in CAS 500
Talk begins at 3:30pm in CAS 502

Abstract:

The Apache Point Observatory Galactic Evolution Experiment (APOGEE), one of the programs in Sloan Digital Sky Survey III (SDSS-III/APOGEE) is now in its third year of operations.  APOGEE is producing a large catalog of high resolution ($R\sim22,500$), high quality ($S/N > 100$), infrared (H-band: 1.51-1.68 μm) spectra for stars throughout all stellar populations of the Milky Way, and including time series information via repeat visits to stars.  Having already collected >350,000 spectra of >75,000 unique stars, APOGEE is already making a variety of impactful discoveries, including the first detection of a high-velocity stellar population in the Milky Way’s central bar, measurements of the Galactic rotation, chemical maps of the disk and bulge, and the discovery of rare stellar species.  I will summarize the status of the APOGEE project and its successor, the dual-hemisphere APOGEE-2 project, including an overview of science results generated by this large, detailed, spectroscopic survey of Milky Way stars.