Time-resolved Spectroscopy and Spectrophotometry of the Pulsating Sdb Star Pg 1605+072
نویسندگان
چکیده
We present the latest results from our analysis of time resolved spectroscopy of PG 1605+072, a high amplitude pulsating sdB star. The star is believed to have evolved off the extreme horizontal branch, and it is uncertain whether it pulsates in por g-modes. Previous studies of PG 1605+072 have found amplitude variation and/or very closely spaced frequencies. We compare our velocity measurements with new simultaneous spectrophotometric measurements and analyse phase differences for the 8 frequencies found in velocity. Phase differences between velocity, spectrophotometry and equivalent width are discussed.
منابع مشابه
Time resolved spectroscopy of the multiperiodic pulsating subdwarf B star PG 1605 + 072
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