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Article: Research on astrophysics published by V.S. Kozyreva et al.
- Article from:
- Physics Week
- Article date:
- August 18, 2009
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According to recent research from Russia, "In 2003-2008, highly accurate photoelectric and CCD observations of the close binary system DI Her were performed in the V band. The light curves of three primary and three secondary eclipses were constructed."
"These observations, along with the highly accurate photoelectric observations of other authors obtained in different years from 1963 to 1986, have confirmed the difference between the observed (1 (.) (o) 3 +/- 0 (.) (o) 1/100 yr) and theoretical (4 (.) (o) 3/100 yr) rates of apsidal motion. Our photometric data are indicative of a possible variability in the system with period P' = 1.175 days and amplitude A' = 0 ...