|
|||||
|
|
CCD photometry of W UMa-type contact binaries in the old open cluster Berkeley 39 |
|
| Authors: | Yellapragada Ravi Kiron K ulapati Sriram Pasagada Vivekan a Rao |
| Institution: | Yellapragada Ravi Kiron1,Kandulapati Sriram2 and Pasagada Vivekananda Rao1 1 Department of Astronomy,Osmania University,Hyderabad 500 007,India,2 Korea Astronomy and Space Science Institute,Hwaam 61-1,Yuseong,Daejeon 305-348,South Korea |
| Abstract: | We present the combined BVI multicolor photometric solutions of seven EW variables in the old open cluster Berkeley 39.The observations were carried out in the B and V passbands from the 2 m telescope at the IUCAA-Girawali Observatory in India.The analysis is done using the 2003 version of the Wilson-Devinney code and the fitted light curves are presented.The light curves appear to be symmetric in all the passbands.The photometric solutions suggest that the variables are W-type systems.The new ephemeris ind... |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ | |