La binaria a eclisse V997 Cygni: curva di luce e nuova effemeride; La binaria a eclisse V997 Cygni: curva di luce e nuova effemeride; The eclipsing binary V997 Cygni: light curve and new ephemeris.
Abstract
The results of CCD photometry of the variable star V997 Cygni are presented. The light curve confirms the star is a W UMa-type eclipsing binary (EW). The period analysis confirms definitively the ~0.458 days value without any period variation's evidence. The observed times of minimum are analyzed in the OC diagram, including old minima found in literature. The results have been published on IBVS 5997.
- Publication:
-
Astronomia. La rivista dell' Unione Astrofili Italiani
- Pub Date:
- June 2012
- Bibcode:
- 2012AsUAI...3...26C