Two new variable stars observed in the field of the extrasolar planet host star WASP-3

Details Two new variable stars observed in the field of the extrasolar planet host star WASP-3 Two new variable stars observed in the field of the extrasolar planet host star WASP-3

2010-03-05

arxiv.org/abs/1003.1279v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

13 pages, published on the Open European Journal on Variable Stars (paper # 0122)

Scientific paper

We report the discovery of two new short-period variable stars in the Lyra constellation, GSC2.3 N208000326 and GSC2.3 N20B000251, observed at the Astronomical Observatory of Autonomous Region of the Aosta Valley. Photometric measurements collected during several days are presented and discussed. One star appears to be a delta Scuti pulsating star (P=0.07848018+/-0.00000006 days; pulsation amplitudes V=0.055 mag and R=0.045; average (V-R)=0.378+/-0.009, probable spectral type F2). Th identity of the second star (P=0.402714+/-0.000008 days) resulted more difficult to be understood. We propose that this object should be classified as an eclipsing binary system where 0.065 and 0.055 are, respectively, the depths of the primary and secondary minimum in the light curve, as observed with a non standard R filter.

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