Historic light curve and long-term optical variation of BL Lacertae 2200+420

doi:10.1086/306301

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	Historic light curve and long-term optical variation of BL Lacertae 2200+420
	Fan, JH 1,2; Xie GZ(谢光中)3 ; Pecontal, E 1; Pecontal, A 1; Copin, Y 1
发表期刊	ASTROPHYSICAL JOURNAL
	1998-11-01
卷号	507 期号:1 页码:173-178
DOI	10.1086/306301
产权排序	第4完成单位
收录类别	SCI
关键词	Bl Lacertae Objects : Individual (2200+420)
摘要	In this paper, historical optical (UBVRI) data and newly observed data from the Yunnan Observatory of China (over similar to 100 yr) are presented for BL Lacertae. Large variations of Delta U = 5.12 mag, Delta B = 5.31 mag, Delta V = 4.73 mag, Delta R = 2.59 mag, and Delta I = 2.54 mag, and color indices of U-B = -0.11 +/- 0.20, B-V = 1.0 +/- 0.11, V - R = 0.73 +/- 0.19, V - I = 1.42 +/- 0.25, R - I = 0.82 +/- 0.11, and B - I = 2.44 +/- 0.29 have been obtained from the literature. The Jurkevich method is used to investigate the existence of periods in the B-band light curve, and a long-term period of 14 yr is found. The 0.6 and 0.88 yr periods reported by Webb et al. are confirmed. In addition, a close relation between B - I and B is found, suggesting that the spectrum flattens when the source brightens.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:000077779400016
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	0.35-3.5 MICRON PHOTOMETRY ; ACTIVE GALACTIC NUCLEI ; MULTIFREQUENCY OBSERVATIONS ; BLAZAR OJ-287 ; 3C 345 ; OBJECTS ; VARIABILITY ; QUASARS ; LAC ; CONFIRMATION
引用统计	被引频次：129[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/114a53/6871
专题	星系研究组
通讯作者	Fan, JH
作者单位	1.Centre de Recherche Astronomique de Lyon, Observatoire de Lyon, 9 Avenue Charles André, 69 563 Saint-Genis-Laval Cedex, France 2.Center for Astrophysics, Guangzhou Normal University, Guangzhou 510400, China; and Joint Laboratory for Optical Astronomy, Chinese Academy of Sciences, China 3.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式 GB/T 7714	Fan, JH,Xie GZ,Pecontal, E,et al. Historic light curve and long-term optical variation of BL Lacertae 2200+420[J]. ASTROPHYSICAL JOURNAL,1998,507(1):173-178.
APA	Fan, JH,Xie GZ,Pecontal, E,Pecontal, A,&Copin, Y.(1998).Historic light curve and long-term optical variation of BL Lacertae 2200+420.ASTROPHYSICAL JOURNAL,507(1),173-178.
MLA	Fan, JH,et al."Historic light curve and long-term optical variation of BL Lacertae 2200+420".ASTROPHYSICAL JOURNAL 507.1(1998):173-178.

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