Seven SB2 masses using Hipparcos intermediate astrometric data

Frédéric Arenou (1, 2) , J.-L. Halbwachs (3) , Michel Mayor (4) , Julienne Palasi (1) , Stéphane Udry (4)

1 DASGAL - Departement d'Astrophysique Stellaire et Galactique
2 GEPI - Galaxies, Etoiles, Physique, Instrumentation
3 ObAS - Observatoire astronomique de Strasbourg
4 ObsGE - Observatoire Astronomique de l'Université de Genève

The spectroscopic orbital elements of seven double-lined spectroscopic binaries have been combined with the Hipparcos astrometric data. Dynamical masses and magnitude differences are determined with a precision of about 15% on average, and the astrometric parameters are improved.

Domaines: Astrophysique galactique [astro-ph.GA]; Astrophysique stellaire et solaire [astro-ph.SR]

Frédéric Arenou, J.-L. Halbwachs, Michel Mayor, Julienne Palasi, Stéphane Udry. Seven SB2 masses using Hipparcos intermediate astrometric data. IAU Symposium 200: The Formation of Binary Stars, Apr 2000, Potsdam, Germany. ⟨hal-02055008⟩