AAS 207th Meeting, 8-12 January 2006
Session 68 Extra-Solar Planets II: Current Searches, Properties and Analysis
Poster, Tuesday, 9:20am-6:30pm, January 10, 2006, Exhibit Hall

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[68.07] Volume-Limited Survey for Wide Substellar Companions to Nearby Stars

A. A. LaPage (University of Rochester), D. W. Koerner, D. Labrier, P. Brammeier, J. Keller, A. Case (Northern Arizona Univeristy)

We report preliminary results from a search for substellar companions to all stars within the NStars Database: a catalogue of all stars known to be within 25 pc by virture of having a well-established trigonometric parallax. Our survey uses the 2MASS, GSC, and USNOB point source catalogs to color- and magnitude-select a list of all candidate companions within a projected separation of 20,000 AU. Visual inspection is used to eliminate non-stellar sources whenever possible. Common proper motion, when available from multi-epoch survey data, is also used to test for multiple system membership. The end product of this survey will be upper limits for the presence of wide companions, together with a minimized candidate list for follow-up confirmation of possible substellar companions. This work is supported by NSF grant AST-0453611 and promises to yield a milestone in the comprehensive survey of wide binary companions below the hydrogen-burning mass limit.

The author(s) of this abstract have provided an email address for comments about the abstract: lapage@pas.rochester.edu

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