Updated UBV Light-Curve and Period Analysis of Eclipsing Binary HS Herculis

Details Updated UBV Light-Curve and Period Analysis of Eclipsing Binary HS Herculis Updated UBV Light-Curve and Period Analysis of Eclipsing Binary HS Herculis

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.tmp..250b&link_type=abstract

Astrophysics and Space Science, Online First

Astronomy and Astrophysics

Astrophysics

Hs Her: Period Variation: Apsidal Motion, Light-Time Effect, Light-Curve: Wd Solution

Scientific paper

UBV light-curves of the eclipsing binary HS Herculis, which obtained in 2002--2003 observational seasons, were analysed with Wilson-Devinney computer code. New absolute dimensions of the system were calculated using the results of the light-curve analysis. Period variation of the system also investigated. Several new times of minima have been secured for this problematic system. An apsidal motion with the period of 80.7 years was confirmed and a third body in an pretty eccentric orbit (e 3 = 0.90 ± 0.08) with a period of 85.4 years was found. The corresponding internal structure constants of the binary system, log k 2, and mass of third body were derived.

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