Mass determination of astrometric binaries with Hipparcos. III. New results for 28 systems

Details Mass determination of astrometric binaries with Hipparcos. III. New results for 28 systems Mass determination of astrometric binaries with Hipparcos. III. New results for 28 systems

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..133..149m&link_type=abstract

Astronomy and Astrophysics Supplement, v.133, p.149-162

Astronomy and Astrophysics

Astrophysics

35

Stars: Fundamental Parameters, Binaries: Visual, Astrometry

Scientific paper

This paper is the third of a series devoted to the determination of stellar masses from Hipparcos data. This is a continuation of Martin et al. (1997), who introduced the theory and assessed the performance of the method from simulated data, and of a second paper with the first results for 46 systems, ( te[Martin & Mignard 1998]{Mar98}). The orbit file maintained by the CHARA group and new publications of orbital elements made the processing of 70 additional candidate systems possible, including 28 of the 145 systems already tested in the previous work. Significant results were obtained on 22 systems, with relative accuracy better than 25% for the masses of 17 binaries. New estimates are also given for 6 systems previously investigated, thanks to reliable values of the magnitude difference from the Hipparcos catalogue ( te[ESA 1997]{ESA97}). New orbital elements are proposed for HIP 12623 (12 Persei) from speckle/spectroscopic measurements. Results are discussed for each system, alongside the mass-luminosity relation based on Hipparcos magnitudes and distances.

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