Publication at Faculty of Mathematics and Physics |
2011
Abstract
The first detailed analysis of the two eclipsing binaries V456 Oph and V490 Cyg. The main result is the discovery that both systems have eccentric orbits.
For V456 Oph we deal with the eccentric eclipsing binary system with the shortest orbital period known (about 1.016 day), while the apsidal motion period is about 23 years. V490 Cyg represents the eclipsing system with the shortest apsidal motion period (about 18.8 years only).
The two components of V456 Oph are probably of spectral type F.