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Date and Time of the Query: 2018-12-16 T07:49:00 PST
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For refcode 2002AJ....123..855Z:
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2002AJ....123..855Z THE MAGELLANIC CLOUDS PHOTOMETRIC SURVEY: THE SMALL MAGELLANIC CLOUD STELLAR CATALOG AND EXTINCTION MAP DENNIS ZARITSKY Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721; dzaritsky@as.arizona.edu JASON HARRIS Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; jharris@stsci.edu IAN B. THOMPSON Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101; ian@ociw.edu EVA K. GREBEL Max-Planck-Institut fur Astronomie, Konigstuhl 17, D-96177 Heidelberg, Germany; grebel@mpia-hd.mpg.de AND PHILIP MASSEY Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001; massey@lowell.edu Received 2001 September 3; accepted 2001 October 29 ABSTRACT We present our catalog of U, B, V, and I stellar photometry of the central 18 deg^2^ area of the Small Magellanic Cloud. We combine our data with the Two Micron All Sky Survey and Deep Near-Infrared Southern Sky Survey (DENIS) catalogs to provide, when available, U through K_s_ data for stars. Internal and external astrometric and photometric tests using existing optical photometry (U, B, and V from Massey's bright star catalog; B, V, and I from the microlensing database of OGLE; and I from the near-infrared sky survey DENIS) are used to determine the observational uncertainties and identify systematic errors. We fit stellar atmosphere models to the optical data to check the consistency of the photometry for individual stars across the passbands and to estimate the line-of-sight extinction. Finally, we use the estimated line-of-sight extinctions to produce an extinction map across the Small Magellanic Cloud, and we investigate the nature of extinction as a function of stellar population. Key words: catalogs - dust, extinction - galaxies: photometry - galaxies: stellar content - Magellanic Clouds
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