Revision of the elements of photometrical orbit and of the apsidal motion rate in the eclipsing system DI Herculis.
Abstract
New elements of the photometric orbit of DI Her have been determined from photoelectric measurements 1969 - 1980. A new value of ω- the apsidal motion rate - has been derived from photoelectric observations of 1963 - 1980 and from the best photometric estimates of the first half of the century. This value is as follows: ω= 0°.0077±0°.0007 (full period of apsidal rotation Π = 46700±4000 years). There remained no place for relativistic motion ωr = 0°.0233 p.y.
- Publication:
-
Pisma v Astronomicheskii Zhurnal
- Pub Date:
- May 1987
- Bibcode:
- 1987PAZh...13..218M
- Keywords:
-
- Angular Velocity;
- Apsides;
- Eclipsing Binary Stars;
- Orbital Elements;
- Stellar Spectra;
- Electrophotometry;
- Stellar Rotation;
- Astrophysics