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Optical multi-color monitoring of OJ 287 from 2006 to 2012
Guo Q(郭倩)1,2,3,4; Xiong DR(熊定荣)1,2,3; Bai JM(白金明)1,2,3; Fan XL(范绪亮)1,2,3,4; Yi WM(易卫敏)1,2,3
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2017-08-01
卷号17期号:8页码:1-12
DOI10.1088/1674-4527/17/8/82
产权排序第1完成单位
收录类别SCI
关键词Bl Lacertae Objects: Individual (Oj 287) Galaxies: Active Galaxies: Photometry
摘要We present our opticalmulti-color monitoring of the BL Lac object OJ 287 from january 2006 to December 2012 in the V, R and I bands. A relatively active state in OJ 287 has been found over all monitored epochs, among which the variations of average magnitude in V/R/I bands were measured with Delta V = 1.956 mag, Delta R = 2.067 mag and Delta I = 2.115 mag, respectively. No reliable intraday variability is detected, but possible variability is detected on 16 nights. Their relative variation amplitudes fall into the range between 1% and 8%, with the majority between 2Y and 4%. No time lags have been detected, but strong correlations exist among light curves in the three wavebands. The bluer-when-brighter trend is dominant over intraday timescales, which supports the shock-in-jet model. When combining with additional V/R band data obtained from SMARTS and the Steward Observatory, we also find a bluer-when-brighter trend over a long-term timescale. Some possible periods of 513, 176, 36, 30, 26, 17 and 14 d are found in all time-series data sets from 2006 to 2017. Possible explanations about these periods are given.
项目资助者Fermi Guest Investigator grant(NNX08AW56G, NNX09AU10G, NNX12AO93G, NNXI5AU81G) ; Strategic Priority Research Program of the Chinese Academy of Sciences - The Emergence of Cosmological Structures(XDB09000000) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-M06) ; NSFC(NSFC-11133006, 11361140347) ; Chinese Western Young Scholars Program by CAS ; Light of West China Program by CAS
语种英语
学科领域天文学
文章类型Article
ISSN1674-4527
URL查看原文
归档日期2017-08-22
WOS记录号WOS:000416068900006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACTIVE GALACTIC NUCLEI ; BL-LACERTAE OBJECTS ; INTRADAY VARIABILITY ; RADIO-QUIET ; BLAZARS ; OJ-287 ; MICROVARIABILITY ; PHOTOMETRY ; STARS ; TIMESCALES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/11902
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Guo Q(郭倩)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
4.University of Chinese Academy of Sciences, Beijing 100049, China
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Guo Q,Xiong DR,Bai JM,et al. Optical multi-color monitoring of OJ 287 from 2006 to 2012[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(8):1-12.
APA Guo Q,Xiong DR,Bai JM,Fan XL,&Yi WM.(2017).Optical multi-color monitoring of OJ 287 from 2006 to 2012.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(8),1-12.
MLA Guo Q,et al."Optical multi-color monitoring of OJ 287 from 2006 to 2012".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.8(2017):1-12.
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