SPOT activity in the RS CVn binary UX ARIETIS

Details SPOT activity in the RS CVn binary UX ARIETIS SPOT activity in the RS CVn binary UX ARIETIS

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984japa....5..159s&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 5, June 1984, p. 159-168.

Astronomy and Astrophysics

Astrophysics

10

Binary Stars, Light Curve, Starspots, Stellar Activity, Stellar Spectrophotometry, Variable Stars, Amplitude Distribution Analysis, Electrophotometry, Ubv Spectra

Scientific paper

Photometric observations of the double lined spectroscopic binary UX Ari in the B and V bands for three observing seasons are discussed with respect to wave migration, spot activity and the system's variability. A wave minimum has been detected on the light curve and found to have a 5-6 yr cycle. The cycle may be produced by the regular appearance and migration of starspots from high latitudes to the equator. The visual magnitude has been nearly constant (6.51) from 1974-83, with very little contribution from an observed intrinsic variability. The data imply that the variation arises from starspots and not from an intrinsic feature.

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