Three long-period contact or semi-detached binary systems

Details Three long-period contact or semi-detached binary systems Three long-period contact or semi-detached binary systems

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988acasn..29..374l&link_type=abstract

(Acta Astronomica Sinica, vol. 29, no. 4, 1988, p. 374-380) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 13, June 1

Astronomy and Astrophysics

Astrophysics

1

Binary Stars, Stellar Systems, Astronomical Catalogs, Astronomical Photometry, Late Stars, Light Curve, Stellar Coronas, Stellar Mass

Scientific paper

The photometric data of three long-period binaries are analyzed, noting that 5 Ceti and CoD-30 5135 are contact systems with respective periods of 96.41 and 158.0 days, and that HD 104901 B is a semidetached system of period 106.6 days. Combining all the available spectroscopic observations, the absolute dimensions of 5 Ceti are derived, showing a mass of 94 solar masses and a radius of 246 solar radii. Containing a supergiant or giant component may be a common characteristic of long-period, contact, or semidetached systems.

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