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Stellar Wobble Due to a Nearby Binary System

Published online by Cambridge University Press:  23 April 2012

M. H. M. Morais  and
A. C. M. Correia
M. H. M. Morais
Affiliation:
Department of Physics, I3N, University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal email: [email protected]
A. C. M. Correia
Affiliation:
Astronomie et Systemes Dynamiques, IMCCE-CNRS UMR 8028, 77 Avenue Denfert-Rochereau, 75014 Paris, France email: [email protected]
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Abstract

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To date, there are several reported exoplanet detections within binary star systems. These findings are based on radial velocity data for the target star. However, the companion star could in turn have a companion of which we are not aware. We describe how this hidden binary system affects the radial velocity of the target star, mimicking a planet in some circumstances We also explain what can be done in practice in order to distinguish between these two effects.

Keywords

(stars:) binaries: general(stars:) planetary systemstechniques: radial velocities
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 137 - 138
Copyright
Copyright © International Astronomical Union 2012

References

[1]Morais, M. H. M. & Correia, A. C. M. 2008, A&A, 391, 899Google Scholar
[2]Morais, M. H. M. & Correia, A. C. M. 2011, A&A, 525, A152Google Scholar
[3]Morais, M. H. M. & Correia, A. C. M. 2011, MNRAS, submittedGoogle Scholar