The mass excess in the systems of wide visual double stars on the basis of apparent motion parameters method, Hipparcos parallax and WDS data.

Details The mass excess in the systems of wide visual double stars on the basis of apparent motion parameters method, Hipparcos parallax and WDS data. The mass excess in the systems of wide visual double stars on the basis of apparent motion parameters method, Hipparcos parallax and WDS data.

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..240..129k&link_type=abstract

Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, International Astronomical Union. Symposium no. 240, he

Astronomy and Astrophysics

Astrophysics

Scientific paper

Our purpose was to determine the minimal sum of masses of wide visual double stars' components that allows these components to maintain an elliptical orbit. We based our calculations on apparent motion arameters (AMP) method, Hipparcos parallaxes and WDS catalog data for 129 wide pairs. The pairs were selected according to the following criteria: 1) Component separation is more than 2". 2) Parallax from Hipparcos catalogue is more than 0.01". 3) Observations cover the arc of about from 10° to 30° so that at least the orbit curvature can be determined, although the orbit elements and masses can not be determined. We discovered several stars for which the minimum mass is essentially more than the value determined on the basis of the mass-luminosity relation.

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