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Astron. Astrophys. Suppl. Ser.
Volume 136, Number 1, April I 1999
Page(s) 139 - 143
Published online 15 April 1999
DOI: 10.1051/aas:1999204

Astron. Astrophys. Suppl. Ser. 136, 139-143

Photometric study of the late-type contact binary YY Eridani[*]

Y. Yang and Q. Liu

Send offprint request: Y. Yang

Yunnan Observatory, Chinese Academy of Sciences, Kunming, China

Received August 7; accepted December 1, 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

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