A proper motion survey for brown dwarfs with Pan-STARRS 1 and 2MASS

Details A proper motion survey for brown dwarfs with Pan-STARRS 1 and 2MASS A proper motion survey for brown dwarfs with Pan-STARRS 1 and 2MASS

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21830602d&link_type=abstract

American Astronomical Society, AAS Meeting #218, #306.02; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Scientific paper

The solar neighborhood is an ideal laboratory for studying brown dwarfs, the local population of which provides a snapshot of the integrated substellar object formation history throughout the lifetime of our Galaxy. The Pan-STARRS 1 telescope is a wide field optical survey telescope currently producing the largest, multiepoch, multicolor, CCD based study of the sky ever done. Its combination of high quality photometry, excellent red optical sensitivity and multiple epochs make it a valuable tool for probing our nearby cool neighbors. Here we outline the results of an extensive survey of the Pan-STARRS 1 sky for bright, previously unknown T dwarfs. Our work combines g,r,i,z,y data from the Pan-STARRS 1 3Pi survey with J, H and K_s data from 2MASS. The addition of PS1 data allows us to mine the widely exploited 2MASS database more deeply than others have before. Using proper motion and color selection we can detect relatively bright, nearby brown dwarfs missed by previous studies. We are especially sensitive to early/mid T dwarfs which are routinely missing from near/mid-infrared only studies due to restrictive color selection. This work provides the basis for studies using multiple Pan-STARRS 1 epochs which will provide the most complete and unbiased sample of the local brown dwarf population yet identified.

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