A new Gamma Doradus star, HD 108100

The Gamma Doradus variables are a newly discovered class of multiperiodic variable stars, found mainly among main-sequence stars at or near the cool border of Delta Scuti star instability strip. Evidence for this new class of pulsating stars was presented by Balona, Krisciunas & Cousins (1994), who photometrically examined the star Gamma Doradus and found it to be a slowly variable multiperiodic star. At the present time, less than thirty members of the Gamma Doradus star class are known (e.g see Krisciunas & Handler 1995). It is important to detect additional members of the class in order to understand the physical properties of the class. Such searches are being undertaken. Examples are the systematic examinations of stars in the Hyades cluster (Krisciunas et al. 1995) and NGC 2516 (Zerbi et al. 1997).