500 K and Below - Finding Ultracool Dwarfs with the UKIRT/WFCAM and VISTA surveys

Details 500 K and Below - Finding Ultracool Dwarfs with the UKIRT/WFCAM and VISTA surveys 500 K and Below - Finding Ultracool Dwarfs with the UKIRT/WFCAM and VISTA surveys

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12.1080l&link_type=abstract

The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August

Astronomy and Astrophysics

Astrophysics

Brown Dwarfs, Surveys, Instrumentation

Scientific paper

I describe the very large area infrared UKIRT surveys which will begin in 2003 and their impact on the field of brown dwarf searches. These surveys will reach K≈19 and survey on the order of 20% of the sky. Present plans are for ZJHK imaging, with repeats in J or K to detect proper motions. It is expected that brown dwarfs in the 400-500 K range will be detected, possibly reaching the threshold at which liquid water droplet clouds will form in the upper atmosphere. Some planetary mass 'sub-brown dwarfs' may also be detected if any exist within 10 parsecs. These surveys form natural successors to 2MASS, DENIS and SLOAN. The 4-m VISTA telescope will conduct similar surveys in the southern hemisphere beginning around 2005-6.

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