A historical light curve of ON 231 and its periodic analysis

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	A historical light curve of ON 231 and its periodic analysis
	Liu FK(刘复坤)2,3 ; Xie GZ(谢光中)1,2,3 ; Bai JM(白金明)2
发表期刊	ASTRONOMY & ASTROPHYSICS
	1995-03
卷号	295 期号:1 页码:1-10
产权排序	第2完成单位
收录类别	SCI
关键词	Galaxy On 231 Active Bl Lac Objects General
摘要	All data in the B band for BL Lac object ON 231 have been compiled into a light curve from twenty-six publications, dating back to 1892; 560 values are available. The light curve shows that ON 231 is very active and exhibits very complicated non-sinusoidal variations. The light curve probably consists of three kinds of behaviours. The first may be nonperiodic or with a period at least longer than the duration of historical observations. In this case, the source seems to maintain two states of intensities, changing in mean behaviour from a bright level with about mean B magnitude 15.45 to a faint level with about 16.45 mag between 1969 and 1972. After detailed Jurkevich V-m(2) test analysis, we found that the second is periodic, with a period of 13.6 +/- 1.3 years (or 26.6 +/- 0.8 years) with outburst structure of one magnitude with total width of about 6 years. The third one is sporadic, superposing on the previous two behaviors. the periods of 0.981 +/- 0.005 years (or 2.02, 3.01,... years) and of a few days are not significant and may be spurious.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
WOS记录号	WOS:A1995QL10400005
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BL-LACERTAE OBJECTS ; OPTICAL VARIABILITY ; RADIO-SOURCES ; ACCRETION DISKS ; LAC OBJECTS ; OUTBURSTS
引用统计	被引频次：72[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/6899
专题	星系研究组
作者单位	1.Center for Astrophysics, CCAST (World Laboratory), Beijing, China 2.Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 3.Center for Nonlinear Complex System, Yunnan University, Kunming, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Liu FK,Xie GZ,Bai JM. A historical light curve of ON 231 and its periodic analysis[J]. ASTRONOMY & ASTROPHYSICS,1995,295(1):1-10.
APA	Liu FK,Xie GZ,&Bai JM.(1995).A historical light curve of ON 231 and its periodic analysis.ASTRONOMY & ASTROPHYSICS,295(1),1-10.
MLA	Liu FK,et al."A historical light curve of ON 231 and its periodic analysis".ASTRONOMY & ASTROPHYSICS 295.1(1995):1-10.

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