A spot model of the overcontact binary PY Lyrae
Abstract
The first BVRI CCD photometric observations of PY Lyrae were obtained at the Kryoneri Observatory in the summer of 2004. Five new times of minima and a new ephemeris were calculated. The light curves were analyzed with the Wilson-Devinney program, in order to derive the geometric and photometric elements of the system. A spot model was assumed in order to explain the pronounced O'Connell effect.
- Publication:
-
Recent Advances in Astronomy and Astrophysics
- Pub Date:
- August 2006
- DOI:
- Bibcode:
- 2006AIPC..848..417M
- Keywords:
-
- 97.80.Fk;
- 97.80.Hn;
- Spectroscopic binaries;
- close binaries;
- Eclipsing binaries