New SB2 binaries for accurate stellar masses with Gaia

Details New SB2 binaries for accurate stellar masses with Gaia New SB2 binaries for accurate stellar masses with Gaia

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..303h&link_type=abstract

SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,

Astronomy and Astrophysics

Astrophysics

Binaries: Spectroscopic, Stars: Fundamental Parameters

Scientific paper

The forthcoming Gaia mission will make possible the derivation of accurate stellar masses of binary components, by combining the astrometric measurements and the elements of SB2 orbits. We present a list of 16 long period SB1 systems observed with the T193/Sophie, and for which we measured the radial velocity of the secondary component, changing them in SB2. The 32 components of these systems could get masses with errors around 1 % when the Gaia astrometric measurements and a sufficient set of RV measurements will be available.

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