Open AccessApsidal Motion Study of Close Binary System CW Cephei
Author(s) -
Wonyong Han,
Min-Ji Jeong,
Joh-Na Yoon,
Hyoun-Woo Kim,
Yonggii Kim,
Chun-Hwey Kim
Publication year - 2015
Publication title -
journal of astronomy and space sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 11
eISSN - 2093-5587
pISSN - 2093-1409
DOI - 10.5140/jass.2015.32.4.341
Subject(s) - apsidal precession , physics , observatory , astrophysics , proper motion , telescope , astronomy , motion (physics) , binary number , geodesy , stars , geology , mathematics , classical mechanics , arithmetic , planet
New observations for the times of minimum lights of a well-known apsidal motion star CW Cephei were made using a 0.6 m\udwide field telescope at Jincheon station of Chungbuk National University Observatory, Korea during the 2015 observational\udseason. We determined new times of minimum lights from these observations and analyzed O-C diagrams together with\udcollected times of minima to study both the apsidal motion and the Light Time Effect (LTE) suggested in the system. The\udnew periods of the apsidal motion and the LTE were calculated as 46.6 and 39.3 years, respectively, which were similar but\udimproved accuracy than earlier ones investigated by Han et al. (2002), Erdem et al. (2004) and Wolf et al. (2006)