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Title:
Massive binaries as seen with Gaia
Authors:
Palate, Matthieu; Rauw, Gregor; Gosset, Eric; Nazé, Yaël
Affiliation:
AA(Institut d'Astrophysique et de Géophysique, Université de Liège, Belgium)
Publication:
Société Royale des Sciences de Liège, Bulletin, vol. 80, p. 504-508 (Proceedings of the 39th Liège Astrophysical Colloquium, held in Liège 12-16 July 2010, edited by G. Rauw, M. De Becker, Y. Nazé, J.-M. Vreux, P. Williams)
Publication Date:
01/2011
Origin:
AUTHOR
Bibliographic Code:
2011BSRSL..80..504P

Abstract

Gaia, ESA's forthcoming astrometric observatory, will observe a billion stars of our Galaxy, among which thousands of high-mass stars. In this contribution, we study the capabilities of Gaia's spectrometer (RVS) in the context of massive stars, especially the detectability of lower-mass companions to O-type stars. This preliminary study enables us to estimate to what extent Gaia will constrain the distribution of the physical and orbital parameters of massive binaries (luminosity, period, mass ratio, eccentricity...).
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