A photometric study of the K-type contact binary EI CVn     

Yuan-Gui Yang School of Physics  Electronic Information  Huaibei Normal University  Huaibei  China 《中国天文和天体物理学报》2011,(2)

We present charge-coupled device (CCD) photometry for the short-period K-type binary EI CVn,observed on 2009 February 28 at the Xinglong Station of National Astronomical Observatories,Chinese Academy of Sciences.By using the Wilson-Devinney program,the photometric solution was first deduced from our V R observations.The results show that EI CVn is a W-type weak-contact binary with a mass ratio of qph=0.2834(±0.0010) and an overcontact degree of f=20.0%(±0.7%).The distorted light curves were modeled by a dar...  相似文献