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A Survey of Stellar Families: Multiplicity Among Solar-type Stars

Published online by Cambridge University Press:  12 July 2007

Deepak Raghavan ,
H. A. McAlister ,
T. J. Henry  and
B. D. Mason
Deepak Raghavan
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta GA, USA
H. A. McAlister
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta GA, USA
T. J. Henry
Affiliation:
Center for High Angular Resolution Astronomy, Georgia State University, Atlanta GA, USA
B. D. Mason
Affiliation:
U.S. Naval Observatory, 3450 Massachusetts Avenue NW, Washington DC, USA
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Abstract

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Stellar multiplicity is a fundamental astrophysical property. In addition to being the only physical basis for accurate mass determination, this parameter is believed to influence important aspects such as planet formation and stability. Contrary to earlier expectations, recent studies have shown that even against selection biases, as many as 23% of the planetary systems reside in multiple star systems (Raghavan et al. 2006)). Leveraging recent efforts in identifying stellar and substellar companions to solar-type stars, and augmenting them with targeted observations, we are conducting a comprehensive survey, aimed at providing a modern update to the seminal work of Duquennoy & Mayor (1991). The details of our sample, survey methods, and some preliminary results are presented here.

Keywords

binaries (including multiples)planetary systemssurveys
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 254 - 257
Copyright
Copyright © International Astronomical Union 2007

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