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Mid-infrared selection of brown dwarfs and high-redshift quasars

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dc.contributor.author Stern, Daniel
dc.contributor.author Kirkpatrick, J. Davy
dc.contributor.author Allen, Lori E.
dc.contributor.author Bian, Chao
dc.contributor.author Blain, Andrew
dc.contributor.author Brand, Kate
dc.contributor.author Brodwin, Mark
dc.contributor.author Brown, Michael J. I.
dc.contributor.author Cool, Richard
dc.contributor.author Desai, Vandana
dc.contributor.author Dey, Arjun
dc.contributor.author Eisenhardt, Peter
dc.contributor.author Gonzalez, Anthony
dc.contributor.author Jannuzi, Buell T.
dc.contributor.author Menendez-Delmestre, Karin
dc.contributor.author Smith, Howard A.
dc.contributor.author Soifer, B. T.
dc.contributor.author Tiede, Glenn P.
dc.contributor.author Wright, E.
dc.date.accessioned 2008-09-23T22:07:41Z
dc.date.available 2008-09-23T22:07:41Z
dc.date.issued 2007-07-01
dc.identifier.citation The Astrophysical Journal, 663:677-685, 2007 July 1 en_US
dc.identifier.clearanceno 06-3925
dc.identifier.uri http://hdl.handle.net/2014/40962
dc.description.abstract We discuss color selection of rare objects in a wide-field multiband survey spanning from the optical to the mid-infrared. Simple color criteria simultaneously identify and distinguish two of the most sought after astrophysical sources: the coolest brown dwarfs and the most distant quasars.We present spectroscopically confirmed examples of each class identified in the IRAC Shallow Survey of the Boo¨tes field of the NOAO Deep Wide-Field Survey. IRAC J142950.8+333011 is a T4.5 brown dwarf at a distance of approximately 30-40 pc, and IRAC J142738.5+331242 is a radio-loud quasar at redshift z=6:12. Our selection criteria identify a total of four candidates over 8 deg2 of the Boo¨tes field. The other two candidates are both confirmed 5:5 < z < 6 quasars, previously reported by Cool et al. (2006).We discuss the implications of these discoveries and conclude that there are excellent prospects for extending such searches to cooler brown dwarfs and higher redshift quasars. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher The American Astronomical Society en_US
dc.subject low mass stars en_US
dc.subject brown dwarfs en_US
dc.subject high-redshift en_US
dc.subject quasars
dc.title Mid-infrared selection of brown dwarfs and high-redshift quasars en_US
dc.type Article en_US


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