Apsidal Motion in Eccentric Eclipsing Binary WW Camelopardalis

0354438 - ASÚ 2011 RIV US eng J - Článek v odborném periodiku
Wolf, M. - Kotková, Lenka - Kocián, R. - Dřevěný, R. - Hanžl, D.
Apsidal Motion in Eccentric Eclipsing Binary WW Camelopardalis.
Astronomical Journal. Roč. 139, č. 3 (2010), s. 1028-1030. ISSN 0004-6256. E-ISSN 1538-3881
Grant CEP: GA ČR GA205/08/0003
Výzkumný záměr: CEZ:AV0Z10030501
Klíčová slova: eclipsing Binaries * WW Camelopardali
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 4.548, rok: 2010

WW Camelopardalis is a relatively bright eclipsing binary system with a slightly eccentric orbit. A dozen of its new eclipse times were measured as part of our long-term observational project of eccentric eclipsing binaries. Based on a new solution of the current O - C diagram, we found for the first time an apsidal motion in good agreement with theory. Its period is about 370 ± 50 years. The determined internal structure constant is close to the theoretically expected value. The relativistic effect is significant, being about 13% of the total apsidal motion rate.
Trvalý link: http://hdl.handle.net/11104/0193438