An orbital period study of SZ Piscium.

Details An orbital period study of SZ Piscium. An orbital period study of SZ Piscium.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...293..371k&link_type=abstract

Astronomy and Astrophysics 293, 371-376 (1995)

Astronomy and Astrophysics

Astrophysics

33

Stars: Sz Psc, Stars: Activity, Stars: Binaries: Close, Stars: Magnetic Fields, Stars: Mass Loss

Scientific paper

The variations of the orbital period of the RS CVn-type binary system SZ Psc are examined through a detailed description of the O-C diagram and the use of a new analysis technique. Continuous changes of very large magnitude have been found. They are considered as short-timescale variations whose character is investigated for periodicity or as short-timescale variation of periodic or non-periodic behaviour eventually carried by an underlying long-timescale variation. The prospective physical mechanisms that could have modulated the orbital period in the observed way, have been examined for both cases. A combination of a magnetic activity cycle mechanism and an enhanced stellar wind are found to reproduce satisfactorily the period changes.

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