NOAO >   Observing Info >   Approved Programs >   2010A-0060

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Proposal Information for 2010A-0060


PI: Andrei Tokovinin, NOAO, atokovinin@ctio.noao.edu
Address: CTIO, Casilla 603, La Serena, Chile

Title: Complete census of wide companions to nearby stars

Abstract: Many potential binary companions to nearby stars are found in the 2MASS survey, but most of them are chance projections. The status of 300 companion candidates within 20 arcsec from a carefully selected large sample of nearby solar-type dwarfs will be determined by a 2-nd epoch imagery at the 1.3-m telescope. This will lead to the robust determination of the companion mass function down to the hydrogen- burning limit in the separation range from 500 to 1000 AU. The aim is to complement adaptive-optics studies of low-mass stellar and sub- stellar companions at smaller separations and to provide reference data for the binary-formation theories.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2010A-0060

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