NOAO >   Observing Info >   Approved Programs >   2011A-0318

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Proposal Information for 2011A-0318


PI: Jennifer G. Winters, Georgia State University, winters@chara.gsu.edu
Address: Physics Department, One Park Place, #704, Atlanta, Ga 30302, USA

CoI: Todd J. Henry, Georgia State University
CoI: Angelle Tanner, Georgia State University

Title: Finding Friends for 1200 Red Dwarfs

Abstract: We propose to examine ~400 nearby southern M dwarfs for companions at wide separations (1\arcsec - 3\arcmin) using the 0.9m at CTIO as part of a larger systematic study of ~1200 nearby M dwarfs. The results, when combined with a complementary northern search at Lowell Observatory and a SuperCOSMOS blinking search for companions to 10\arcmin, will allow statistical analyses of the nearby M dwarf population, refinement of the solar neighborhood membership roster, and improvement of the mass function for these objects at the end of the main sequence. This robust sample includes a carefully selected list of red dwarfs that have trigonometric parallaxes placing them nearer than 25 pc, which eliminates biases inherent to photometrically-selected samples. This will be the largest, most comprehensive, study ever done of the multiplicity of the most common stars in the Galaxy. \it The proposed observations will comprise a significant portion of the PI's PhD thesis.


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NOAO >   Observing Info >   Approved Programs >   2011A-0318

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