Light Curve and Orbital Period Analysis of the Eclipsing Binary AT Peg
Abstract
CCD photometric observations of the Algol-type eclipsing binary AT Peg have been obtained. The light curves are analyzed with modern techniques and new geometric and photometric elements are derived. A new orbital period analysis of the system, based on the most reliable timings of minima found in the literature, is presented and apparent period modulations are discussed with respect to the Light-Time effect (LITE) and secular changes in the system. The results of these analyses are compared and interpreted in order to obtain a coherent view of the system's behaviour.
- Publication:
-
From Interacting Binaries to Exoplanets: Essential Modeling Tools
- Pub Date:
- April 2012
- DOI:
- 10.1017/S174392131102686X
- arXiv:
- arXiv:1112.6266
- Bibcode:
- 2012IAUS..282...55L
- Keywords:
-
- methods: data analysis;
- (stars:) binaries (including multiple): close;
- (stars:) binaries: eclipsing;
- stars: evolution;
- stars: individual (AT Peg);
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 2 pages, 2 figures, contribution to the conference proceedings: IAU Symposium 282 - From Interacting Binaries to Exoplanets: Essential Modeling Tools, Tatransk\'a Lomnica, Slovakia, 18-22 Jul. 2011