Observations of the binary star 61 Cyg on the 26 inch refractor at the Pulkovo observatory

Details Observations of the binary star 61 Cyg on the 26 inch refractor at the Pulkovo observatory Observations of the binary star 61 Cyg on the 26 inch refractor at the Pulkovo observatory

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap.....49..386g&link_type=abstract

Astrophysics, Volume 49, Issue 3, pp.386-396

Astronomy and Astrophysics

Astrophysics

7

Stars, Double, Masses-Individual, 61 Cygni

Scientific paper

Results from an analysis of a forty year series of photographic observations of the binary star 61 Cyg on the 26 inch refractor at the Pulkovo Observatory are presented. The orbit is constructed and the sum of the masses of the components is determined from the relative positions of the components. A study of the individual motions of the components of 61 Cyg relative to the surrounding stars yields their mass ratio and the masses of the main and secondary components, 0.74 and 0.46 solar masses, respectively. The relative motion of the components is found to have a fluctuating component with a period of 6.5 years which may be caused, in particular, by the presence in the system of a dark, low-mass companion.

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