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We report the discovery of oscillations in the hot subdwarf B star JL 166from time-series photometry using the Goodman Spectrograph on the 4.1-mSouthern Astrophysical Research Telescope. Previous spectroscopic andphotometric observations place the star near the hot end of the empirical sdBinstability strip and imply the presence of a cool companion. Amplitude spectraof the stellar light curve reveal at least 10 independent pulsation modes withperiods ranging from 97 to 178 s and amplitudes from 0.9 to 4 mma. We adoptatmospheric parameters of T_eff = 34350 K and log g = 5.75 from a modelatmosphere analysis of our time-averaged, medium-resolution spectrum.

Detection of Photometric Variations in the sdBV Star JL 166