Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999mnras.308.1081k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 308, Issue 4, pp. 1081-1086.
Astronomy and Astrophysics
Astronomy
20
Scientific paper
We present BV photometry and simultaneous high-resolution, high signal-to-noise ratio spectroscopy of the newly-discovered γ Doradus variable HR 8330 taken during the 1997 and 1998 observing seasons. We calculate power spectra for the B- and V-band data sets and for the time series defined throughout the observing season at each point across the Feii λ4508.289 and the Tiii λ4501.278 line profiles to search for periodic variability. Period analysis reveals a single, 2.6-d period in both the photometric and the spectroscopic data, with a 237 deg phase lag between them. Based on the location of HR 8330 in the HR diagram and the characteristics of its photometric and spectroscopic variations, we conclude that HR8330 is a bona fide γ Doradus-type pulsating variable.
Fekel Francis C.
Hall Douglas S.
Henry Gregory W.
Kaye Anthony Bresenhan
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