Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..577b&link_type=abstract
SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,
Astronomy and Astrophysics
Astrophysics
Scientific paper
Radial velocity measurements of binary systems lead to an incomplete set of orbital parameters. As a consequence, only minimum values for the masses of the two components can be determined. With the advent of long baseline stellar interferometry, it has become possible to resolve binaries with separations as small as a few mas. The latter technique yields the relative position of the secondary with respect to the primary, as well as the luminosity ratio between the two components. For systems observed with both techniques, a joint processing of the two kinds of data allows to retrieve all orbital parameters and thus to compute unambiguous estimates of the masses. We will review this method and discuss to what extent it could be applied to systems with low mass companions, such as brown dwarfs and extrasolar giant planets.
Borde' Pascal
Coudé du Foresto Vincent
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