Rediscussion of Period Change of the Close Binary V651 Cassiopeiae

Details Rediscussion of Period Change of the Close Binary V651 Cassiopeiae Rediscussion of Period Change of the Close Binary V651 Cassiopeiae

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jass...19...47k&link_type=abstract

Journal of Astronomy and Space Science, vol. 19, no. 1, p. 47-56

Astronomy and Astrophysics

Astronomy

V651 Cas, Period Variation, Third Body

Scientific paper

Observations of times of minimum lights of the eclipsing binary V651 Cas were carried out on the three nights from November 21-23, 2000. From our observations a total of seven new times of minimum lights was obtained. Through the analysis of photoelectric and CCD times of minima of V651 Cas including ours, the light time orbit due to a third body, which was proposed by Kim & Lee (2000), was confirmed and improved. The resultant values for the period, semi-amplitude, and eccentricity of the light-time orbit were 6.3y, 0.0013d, and 0.78, respectively. The deduced mass range of the third body is 0.09Msolar <= M3 <= 0.20Msolar for i3 >= 30o. If the third body suggested in V651 Cas system exists really and is a main-sequence star, it is located at the end of the main-sequence.

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