Cyclic variability of UX Ori Stars: UX Ori, SV Cep, and RZ Psc

Details Cyclic variability of UX Ori Stars: UX Ori, SV Cep, and RZ Psc Cyclic variability of UX Ori Stars: UX Ori, SV Cep, and RZ Psc

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999astl...25..243r&link_type=abstract

Astronomy Letters, Volume 25, Issue 4, April 1999, pp.243-249

Astronomy and Astrophysics

Astronomy

11

Scientific paper

Having analyzed long-term series of photometric observations for UX Ori stars (UX Ori, SV Cep, and RZ Psc), we found evidence of possible periodicities in their variability. Multiperiod variability with a nonlinear interaction of periods (modulation) was suspected in SV Cep. The cyclic variability is probably caused by large-scale nonuniformities in the circumstellar dust disks. The mechanism for the generation of such nonuniformities is assumed to be the interaction of the circumstellar disk with the binary star or a planetary system.

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