| Issue |
A&A
Volume 498, Number 3, May II 2009
|
|
|---|---|---|
| Page(s) | 821 - 823 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361/200911864 | |
| Published online | 01 April 2009 | |
Research Note
On the apsidal motion of MY Cygni
Astronomical Institute, Faculty of Mathematics and Physics, Charles University Prague, 180 00 Praha 8, V Holešovičkách 2, Czech Republic e-mail: wolf@cesnet.cz
Received:
17
February
2009
Accepted:
24
February
2009
MY Cygni is a relatively bright eclipsing binary system with a slightly eccentric orbit. Tucker and collaborators found that it shows retrograde apsidal motion in contradiction with theory. Based on a new O–C diagram solution, we concluded that the apsidal motion is prograde in agreement with theory, and its period is about 1400 years. The determined internal structure constant is close to the theoretically expected value. The relativistic effect is significant, being about 18% of the total apsidal motion rate.
Key words: stars: binaries: eclipsing / stars: individual: MY Cyg / stars: fundamental parameters
© ESO, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.