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The Hipparcos observations and the mass of sub-stellar objects

par Pourbaix, Dimitri
Référence Astronomy & astrophysics, 369, 2, page (L22-L25)
Publication Publié, 2001-04

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Résumé :

The Hipparcos Intermediate Astrometric Data have been used lately to estimate the inclination of the orbital plane of candidate extrasolar planets. Whereas most of these investigations derive almost face-on orbits, we show that the astrometric data are seldom precise enough to undertake such studies and that the "face-on" result might be just a spurious effect of the method.