New Variable Stars Discovered as By-product of the Beijing Astronomical Observatory Supernova Survey

作     者：Min-Zhi Kong Jin-Song Deng 等 Min-Zhi Kong, Yu-Lei Qiu, Chuan-Jian Shen, Jin-Song Deng, Bo Zhang and Jing-Yao Hu1 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 1000122 Department of Physics, Heibei Normal University, Shijiazhuang 0500163 Research Center for the Early Universe, Univ. of Tokyo, Bunkyo-Ku, Tokyo, Japan4 Department of Astronomy, Univ. of Tokyo, Bunkyo-Ku, Tokyo, Japan

作者机构：NationalAstronomicalObservatoriesChineseAcademyofSciencesBeijing100012 ResearchCenterfortheEarlyUniverseUniv.ofTokyoBunkyo-KuTokyoJapan 

出 版 物：《Chinese Journal of Astronomy and Astrophysics》 (中国天文和天体物理学报（英文版）)

年 卷 期：2002年第2卷第5期

页      面：463-473页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：This project was partly supported by the National Natural Science Foundation of China and the grant NKBRSF G19990754 

主　　题：stars: variables   supernovae   surveys 

摘      要：The Beijing Astronomical Observatory (BAO) 0.6 m telescope has been used for nearby supernova survey in more than 3000 fields, covering a total area of 235 deg2. More than 260000 CCD images have been collected since April 1996, with 45 supernovae discovered. We searched for variables in about 90000 images taken during 1996-1998. For the fields in which long period variables (LPVs) were discovered, we reduced further images taken from 1999 to 2000, for the period estimation. Among the 280000 stars selected from the survey fields, i.e., brighter than 18 mag, we discovered seven new LPVs and reconfirmed three known LPVs. Additionally, we found 146 variable star candidates, and reconfirmed about 20 previously known or suspected objects.