Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasp..107..517d&link_type=abstract
Publications of the Astronomical Society of the Pacific, v.107, p.517-520
Astronomy and Astrophysics
Astronomy
7
Delta Scuti
Scientific paper
93 hours of photoelectric photometry of FG Virginis were obtained during 1985 and 1986. Seven frequencies of pulsation with significant detections could be extracted from the photometry. The seven detected frequencies agree with those found in a larger, independent photometric study by Breger et al. carried out during 1993, in which ten frequencies were found. The present data also show the 8th and 9th frequencies found during 1993, but below the signal-to-noise limit of significance adopted in our studies. The y amplitudes determined from the present work and the 1993 data agree to +- 1.0 millimag, suggesting that no significant amplitude variations occurred during the eight years. For the dominant frequency of 12.72 c/d a phase shift of theta-b-y - theta-y = 7 degrees is found, compatible with a nonradial p mode of 1=1 and 2. (SECTION: Stars)
Breger Michel
Dawson Dennis W.
de Coca Lopez P.
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