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Metallicity Mapping with gri Photometry: The Virgo Overdensity and the Halos of the Galaxy
Timothy C. Beers, Deokkeun An, Jennifer A. Johnson +7
We describe the methodology required for estimation of photometric estimates of metallicity based on the SDSS gri passbands, which can be used to probe the properties of main-seque…
First Spectroscopic Identification of Massive Young Stellar Objects in the Galactic Center
Deokkeun An, Solange V. Ramírez, Kris Sellgren +7
We report the detection of several molecular gas-phase and ice absorption features in three photometrically-selected young stellar object (YSO) candidates in the central 280 pc of…
A Photometric Metallicity Estimate of the Virgo Stellar Overdensity
Deokkeun An, Jennifer A. Johnson, Timothy C. Beers +6
We determine photometric metal abundance estimates for individual main-sequence stars in the Virgo Overdensity (VOD), which covers almost 1000 deg^2 on the sky, based on a calibrat…
SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
II SEGUE Collaboration, Brian Yanny, Constance Rockosi +2
The SEGUE survey obtained 240,000 moderate resolution (R = 1800) spectra from 3900 - 9000 Angstroms of fainter Milky Way stars (14.0 < g < 20.3) of a wide variety of spectral types…