Frequency analysis of the δ Scuti type pulsations in the semi-detachedeclipsing binary CT Her
Abstract
We present the latest results of a multisite photometric campaign carried out in 2004-2007 on the Algol-type eclipsing binary system CT Her, the primary component of which is a δ Scuti- type pulsator with a main pulsation period of only 27 min. CT Her belongs to the new class of oscillating Algol-type binary systems. We collected enough data in two passbands to perform a modelling of the light curves using PHOEBE and detected up to 7 significant pulsation frequencies in the frequency range between 45-53 d-1 in the B-residual data (independent of the adopted solution for the binary model). The remaining standard deviation of the ca. 7500 B-residuals spread over 4 years is 5.0 mmag.
- Publication:
-
Communications in Asteroseismology
- Pub Date:
- December 2008
- Bibcode:
- 2008CoAst.157..328L