The Ultraviolet, Optical, and Infrared Properties of Sloan Digital Sky Survey Sources Detected byGALEX
| Autor: | M. Obric, John J. Bochanski, Daryl Haggard, Kevin R. Covey, Daniel E. Vanden Berk, Zeljko Ivezic, Anil C. Seth, Alyson Brooks, Lei Hao, Amy Kimball, Gillian R. Knapp, Nathan A. Kaib, Lucianne M. Walkowicz, Mark Claire, Michael Solontoi, Gordon T. Richards, Andrew A. West, Stephanie M. Gogarten, James E. Gunn, Robert H. Lupton, Marcel A. Agüeros |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Star formation White dwarf Astronomy and Astrophysics Quasar Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Galaxy Stars Space and Planetary Science Thick disk Elliptical galaxy Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Early release Astrophysics::Galaxy Astrophysics |
| Zdroj: | The Astronomical Journal. 130:1022-1036 |
| ISSN: | 1538-3881 0004-6256 |
| DOI: | 10.1086/432160 |
| Popis: | We discuss the UV, optical, and IR properties of the SDSS sources detected by GALEX as part of its All-sky Imaging Survey Early Release Observations. Virtually all of the GALEX sources in the overlap region are detected by SDSS. GALEX sources represent ~2.5% of all SDSS sources within these fields and about half are optically unresolved. Most unresolved GALEX/SDSS sources are bright blue turn-off thick disk stars and are typically detected only in the GALEX near-UV band. The remaining unresolved sources include low-redshift quasars, white dwarfs, and white dwarf/M dwarf pairs, and these dominate the optically unresolved sources detected in both GALEX bands. Almost all the resolved SDSS sources detected by GALEX are fainter than the SDSS 'main' spectroscopic limit. These sources have colors consistent with those of blue (spiral) galaxies (u-r |
| Databáze: | OpenAIRE |
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