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

TL;DR

This study reports the discovery and analysis of two new short-period variable stars in Lyra, including a delta Scuti pulsator and a probable eclipsing binary, based on photometric observations from an observatory.

Contribution

The paper introduces two newly identified variable stars, providing detailed photometric data and classification, with one being a delta Scuti star and the other likely an eclipsing binary.

Findings

One star is a delta Scuti pulsator with a period of approximately 0.07848 days.

The second star is likely an eclipsing binary with a period of about 0.4027 days.

Photometric measurements and light curve analysis support the classifications.

Abstract

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.