| Issue |
A&A
Volume 374, Number 1, July IV 2001
|
|
|---|---|---|
| Page(s) | 243 - 249 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20010728 | |
| Published online | 15 July 2001 | |
Apsidal motion in eccentric eclipsing binaries: TV Ceti and V451 Ophiuchi*
1
Astronomical Institute, Charles University Prague, 180 00 Praha 8, V Holešovičkách 2, Czech Republic
2
Astronomical Institute, University of Basel, Venusstrasse 7, 4102 Binningen, Switzerland e-mail: diethelm@astro.unibas.ch
Corresponding author: M. Wolf, wolf@mbox.cesnet.cz
Received:
6
March
2001
Accepted:
21
May
2001
Several new times of minimum light recorded with
photoelectric means have been gathered for two bright eccentric
eclipsing binaries
TV Cet (
) and
V451 Oph (
).
Analysis of all available eclipse timings of TV Ceti has revealed
a small motion of the line of apsides of
deg cycle-1,
corresponding to an apsidal period of 
years.
The contribution from the general relativity effects is dominant
(
).
In this system, the third body on an eccentric orbit with a period
of 28.5 years is also predicted.
The more precise values for the apsidal motion elements were computed
for V451 Oph, where apsidal motion with a period of 
years was
confirmed. The corresponding internal structure constants log k2 were
derived.
Key words: stars: binaries: eclipsing / stars: individual: TV Cet / stars: individual: V451 Oph / stars: fundamental parameters / relativity
© ESO, 2001
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