Journal article

The first high-amplitude δ Scuti star in an eclipsing binary system

JL Christiansen, A Derekas, MCB Ashley, JK Webb, MG Hidas, DW Hamacher, LL Kiss

Monthly Notices of the Royal Astronomical Society | Published : 2007


We report the discovery of the first high-amplitude δ Scuti star in an eclipsing binary, which we have designated UNSW-V-500. The system is an Algol-type semi-detached eclipsing binary of maximum brightness V = 12.52 mag. A best-fitting solution to the binary light curve and two radial velocity curves is derived using the Wilson-Devinney code. We identify a late-A spectral-type primary component of mass 1.49 ± 0.02 M and a late-K spectral-type secondary of mass 0.33 ± 0.02 M , with an inclination of 86°.5 ± 1°.0, and a period of 5.350 4751 ± 0.000 0006 d. A Fourier analysis of the residuals from this solution is performed using period04 to investigate the δ Scuti pulsations. We detect a sin..

View full abstract

University of Melbourne Researchers

Citation metrics