On the origin of the orbital period changes of V523 Cas

Details On the origin of the orbital period changes of V523 Cas On the origin of the orbital period changes of V523 Cas

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aspc..292..215r&link_type=abstract

Interplay of Periodic, Cyclic and Stochastic Variability in Selected Areas of the H-R Diagram. Edited by C. Sterken, ASP Conf. S

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The orbital period changes of V523 Cas were studied based on observational material covering almost a century. Two periodic terms of 99 y and of 33 y were detected, as well as a long-period increase of the order of 3.01 x 10-8 d/y. The latter might be the result of TRO cycles action. For what concerns the two periodic terms, both could be due to light-time effects or they could be the result of magnetic activity cycles. In the first case, V523 Cas will be a quadruple system but this has to be confirmed with further observations.

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