New period and period variations of DX Aquarii

Details New period and period variations of DX Aquarii New period and period variations of DX Aquarii

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.124..397s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 124, no. 2, July 1986, p. 397-402.

Astronomy and Astrophysics

Astrophysics

1

Eclipsing Binary Stars, Stellar Spectrophotometry, Variable Stars, Minima, Periodic Variations

Scientific paper

The new period (P = 0.461,700 d) of the eclipsing binary system DX Aqr has been presented, which is based on available times of minima. An O-C diagram of DX Aqr has been presented for the first time, and the period variations present in the system have been analyzed. In all, five period increases and five period decreases are noted, and four period increases and five period decreases have been discussed. The strongest period increase occurs between 1975 and 1976. The total period change in different portions of the O-C diagram ranges from 1.40 x 10 the -4th d to 3.61 x 10 to the -6th d. Appreciable period fluctuations have been noted to have occurred in the time intervals, 1964-1965 and 1974-1975.

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