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

P14; 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 260 000 CCD images have been collected since April 1996, with 45 supernovae discovered. We searched for variables in about...

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Published in:Chinese journal of astronomy and astrophysics 2002-10, Vol.2 (5), p.463-473
Main Authors: Kong, Min-Zhi, Qiu, Yu-Lei, Shen, Chuan-Jian, Deng, Jin-Song, Zhang, Bo, Hu, Jing-Yao
Format: Article
Language:English
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Summary:P14; 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 260 000 CCD images have been collected since April 1996, with 45 supernovae discovered. We searched for variables in about 90 000 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 280 000 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.
ISSN:1009-9271
DOI:10.1088/1009-9271/2/5/463