| Autor: |
Wolf, M., Diethelm, R., Hornoch, K., Wolf, M., Diethelm, R., Hornoch, K. |
| Zdroj: |
Astronomy and Astrophysics; July 2001, Vol. 374 Issue: 1 p243-249, 7p |
| Abstrakt: |
Several new times of minimum light recorded with photoelectric means have been gathered for two bright eccentric eclipsing binaries TV Cet ($P = 9\fd1, e = 0.055$) and V451 Oph ($P = 2\fd2, e = 0.013$). Analysis of all available eclipse timings of TV Ceti has revealed a small motion of the line of apsides of $\dot{\omega} = 0.000 30 \pm 0.000 08$deg cycle-1, corresponding to an apsidal period of $U = 30 000 \pm 8 000$years. The contribution from the general relativity effects is dominant ($\dot{\omega}_{\rm rel} / \dot{\omega} \sim 80 \% $). 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 $170 \pm 5$years was confirmed. The corresponding internal structure constants log k2were derived. |
| Databáze: |
Supplemental Index |
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