Astron. Astrophys. Suppl. Ser.
Volume 136, Number 1, April I 1999
|Page(s)||139 - 143|
|Published online||15 April 1999|
Photometric study of the late-type contact binary YY Eridani*
Yunnan Observatory, Chinese Academy of Sciences, Kunming, China
Send offprint request to: Y. Yang
Accepted: 1 December 1998
Complete light curves in B and V bands for YY Eridani are presented in this paper. The light curves appear to have a marked asymmetry with Max. I brighter than Max. II. Using the latest version of the Wilson-Devinney light curve synthesis program, we have computed photometric solutions from the new light curves of YY Eri. The present solutions reveal that YY Eri is a W subtype contact binary. The asymmetries of the light curves are explained by the presence of dark spot on the primary or secondary component.
Key words: star: individual: YY Eri / binary: eclipsing
© European Southern Observatory (ESO), 1999