Metallicity Mapping with gri Photometry: The Virgo Overdensity and the Halos of the Galaxy (2009)
Beers, Timothy C., An, Deokkeun, Johnson, Jennifer A., Pinsonneault, Marc H., Terndrup, Donald M., Delahaye, Franck, ...
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-sequence stars beyond ~...
First Spectroscopic Identification of Massive Young Stellar Objects in the Galactic Center (2009)
An, Deokkeun, Ramírez, Solange V., Sellgren, Kris, Arendt, Richard, Boogert, A. C. Adwin, Schultheis, Mathias, ...
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 the Milky Way. Our...
First Spectroscopic Identification of Massive Young Stellar Objects in the Galactic Center (2009)
An, Deokkeun, Ramírez, Solange V., Sellgren, Kris, Arendt, Richard G., Boogert, A. C. Adwin, Schultheis, Mathias, ...
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 the Milky Way. Our...
A Photometric Metallicity Estimate of the Virgo Stellar Overdensity (2009)
An, Deokkeun, Johnson, Jennifer A., Beers, Timothy C., Pinsonneault, Marc H., Terndrup, Donald M., Delahaye, Franck, ...
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 calibration of the...
The Seventh Data Release of the Sloan Digital Sky Survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes...
An, Deokkeun, Pinsonneault, Marc H., Masseron, Thomas, Delahaye, Franck, Johnson, Jennifer A., Terndrup, Donald M., ...
We perform an extensive test of theoretical stellar models for main-sequence stars in ugriz, using cluster fiducial sequences obtained in the previous paper of this series. We generate a set of...
The seventh data release of the sloan digital sky survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
An, Deokkeun, Johnson, Jennifer A., Clem, James L., Yanny, Brian, Rockosi, Constance M., Morrison, Heather L., ...
We present photometry for globular and open cluster stars observed with the Sloan Digital Sky Survey (SDSS). In order to exploit over 100 million stellar objects with r < 22.5 mag observed by SDSS,...
Improving the Local Distance Scale from Empirically Calibrated Stellar Isochrones (2008)
Many outstanding problems concerning the formation and evolution of the Galaxy require accurate distances, but currently available photometric parallax relations for main-sequence (MS) stars often...
Improving the Local Distance Scale from Empirically Calibrated Stellar Isochrones (2008)
Many outstanding problems concerning the formation and evolution of the Galaxy require accurate distances, but currently available photometric parallax relations for main-sequence (MS) stars often...
The Segue Stellar Parameter Pipeline. II. Validation with galactic globular and open clusters (2008)
Lee, Young Sun, Beers, Timothy C., Sivarani, Thirupathi, Johnson, Jennifer A., An, Deokkeun, Wilhelm, Ronald, ...
We validate the accuracy and precision of the current SEGUE (Sloan Extension for Galactic Understanding and Exploration) Stellar Parameter Pipeline (SSPP), which determines stellar atmospheric...
An, Deokkeun, Terndrup, Donald M., Pinsonneault, Marc H.
We derive the basic properties of seven Galactic open clusters containing Cepheids and construct their period-luminosity (P-L) relations. For our cluster main-sequence fitting we extend previous...
An, Deokkeun, Terndrup, Donald M., Pinsonneault, Marc H., Paulson, Diane B., Hanson, Robert B., Stauffer, John R.
We continue our series of papers on open cluster distances with a critical assessment of the accuracy of main-sequence fitting using isochrones that employ empirical corrections to the...
A Survey for EHB Stars in the Galactic Bulge (2003)
Terndrup, Donald M., An, Deokkeun, Hansen, Angela, Peterson, Ruth C., Walker, Alistair R., Sadler, Elaine M.
We present a progress report on an extensive survey to find and characterize all types of blue horizontal-branch stars in the nuclear bulge of the Galaxy. We have obtained wide, shallow imaging in...