Discovery of a New Multiperiodic δ Scuti Variable Star |
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| Authors: | A.-Y. Zhou D. An J. R. Eggen M. D. Reed D. M. Terndrup S. L. Harms |
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| Affiliation: | (1) Department of Physics, Astronomy and Materials Science, Missouri State University, 901 S. National Ave., Springfield, MO, 65897, U.S.A.;(2) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China;(3) Department of Astronomy, The Ohio State University, 140 W. 18th Ave., Columbus, OH, 43210, U.S.A. |
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| Abstract: | We report on the discovery of a new short-periodic pulsating variable star in the field of the pulsating sdB star KPD 2109+4401. The star was observed on 10 consecutive nights. Based on the light curves, we detect three pulsation frequencies at 10.308, 4.023 and 11.075 cycle d−1 with amplitudes of 11.1, 4.3 and 4.2 milli-magnitudes, respectively. Using the existing data from other sky surveys, we estimate a spectral type of late F and other atmospheric parameters. Then we discuss the observational properties of the star. Finally it is classified to be a new low-amplitude multiperiodic δ Scuti star. A future interest addressed is to accurately determine the star's spectral type and then to judge a possible link to γ Doradus-type pulsation. |
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| Keywords: | stars: variable: δ Scuti stars stars: oscillations stars: individual: GSC2.2 N033131287450 |
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