A Possible Secondary Minimum of the Long PeriodEclipsing Binary OW Gem (NSV 3005)

Volume 18 number 1 (1989)

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David B. Williams

9270-A Racquetball Way,

Abstract

Photoelectric photometry of the 1258-day eclipsing binary OW Gem = NSV 3005 during the 1988-89 season found the star constant at maximum except for the interval JD 2447531-540, when it was almost 0.1 magnitude fainter. If the observed event was the secondary eclipse, the unseen companion is a large cool star, probably a late-G to early-M giant, and the orbit of the binary system is highly eccentric with secondary minimum occurring at phase 0.23 of the photometric period.