Discovery of a New Multiperiodic δ Scuti Variable Star

Details Discovery of a New Multiperiodic δ Scuti Variable Star Discovery of a New Multiperiodic δ Scuti Variable Star

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.305...29z&link_type=abstract

Astrophysics and Space Science, Volume 305, Issue 1, pp.29-36

Astronomy and Astrophysics

Astrophysics

2

Stars: Variable: &Delta, Scuti Stars, Stars: Oscillations, Stars: Individual: Gsc2.2 N033131287450

Scientific paper

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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