A binary star with a δ Scuti component: EF Herculis

Details A binary star with a δ Scuti component: EF Herculis A binary star with a δ Scuti component: EF Herculis

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008coast.157..365s&link_type=abstract

Communications in Asteroseismology, Vol.157, p. 365-366

Physics

2

Scientific paper

New photometric observations of Algol type binary system EF Her were carried out in B, V and R filters during the 2007 observing season. In the literature, there is not any photometric or spectroscopic study of the system so far. Firstly, the new observations have been analyzed by using the Wilson-Dewinney code and the geometrical and physical parame- ters of the system are determined. The mass ratio of EF Her was found about 0.21. Periodic oscillations are clearly seen in the maximum, secondary minima and also primary minima of the light curve due to the pulsation of the primary component. The residuals from the computed binary light curves were analyzed with the PERIOD 04 program. As a result of this, only one frequency at 10.07 c/d was obtained.

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