Period study of XX Cassiopeiae

Details Period study of XX Cassiopeiae Period study of XX Cassiopeiae

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.127..345s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 127, no. 2, Nov. 1986, p. 345-354.

Astronomy and Astrophysics

Astrophysics

Cassiopeia Constellation, Eclipsing Binary Stars, Variable Stars, Apsides, Elliptical Orbits, Stellar Orbits

Scientific paper

A new period (P = 3.-067182 day) of the eclipsing binary system XX Cassiopeiae, which is based on thirty-nine minima has been given. An O-C diagram of XX Cas has been presented for the first time, and the period variations present in the system have been analyzed. In all, seven period increases and four period decreases are noted in the time-interval 1922 to 1983. The strongest period change occurs in the time-interval 1929 to 1933. The total period change in different portions of the O-C diagram ranges from 6.1 x 10 to the -7th d to 6.3 x 10 to the -4th d. Appreciable period fluctuations are noted in the time-interval 1922 to 1936. The possibility of the presence of a third body has been suspected.

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