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.304...29b&link_type=abstract

Astrophysics and Space Science, Volume 304, Issue 1-4, pp. 29-33

Astronomy and Astrophysics

Astrophysics

2

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

Scientific paper

UBV light-curves of the eclipsing binary HS Herculis, 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 was also investigated. Several new times of minima have been secured for this problematic system. An apsidal motion with a period of 80.7 years was confirmed and a third body in a 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 the mass of the third body were derived.

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