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Eccentric Eclipsing Binaries: Tests of General Relativity

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Marek Wolf
Astronomical Institute, Charles University Prague, CZ-150 00 Praha 5, Švédská 8, Czech Republic
Present address: Astronomical Institute, Charles University Prague, CZ-180 00 Praha 8, Czech Republic

Lenka (Šarounová) Kotkova
Astronomical Institute, CZ-251 65 Ondřejov, Czech Republic Present address: Astronomical Institute, Academy of Sciences, CZ-251 65 Ondřejov, Czech Republic

Abstract
The study of apsidal motion in detached eclipsing binary systems with eccentric orbits is known as an important source of information for stellar internal structure as well as for the possibility of verification of general relativity outside the Solar System. Suitable objects for this research were collected by Giménez and Crawford (1994). In this paper we report a summary of our results on the observational status of three eccentric binaries with longer periods, namely V541 Cygni, EW Orionis, and GG Orionis, and we appeal to photometrists with moderate or small telescopes around the world to observe these binaries.

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