| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1780642 | NRIAG Journal of Astronomy and Geophysics | 2013 | 6 Pages |
Abstract
Orbital period changes for the Algol-type eclipsing binary AI Dra were studied based on the analysis of its observed times of light minimum. The period variation showed cyclic changes in the interval from JD. ≈ 24 36000 to JD. ≈ 24 47500 and a secular period increase rate (dP/dt = 2.44 × 10−7 d/year) starting from JD. ≈ 24 48500 up to 24 55262, in a time scale equals to 5 × 106 year.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Magdy A. Hanna,