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Infrared properties of OJ 287
Zhang YH(张有宏); Xie GZ(谢光中)
发表期刊ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
1996-10-01
卷号119期号:2页码:199-203
产权排序第1完成单位
收录类别SCI
关键词Bl Lac Objects Infrared Individual Galaxies Oj 287
摘要The paper presents the first evidence for the long-term near-infrared brightness, colour and spectral variability in the BL Lac object OJ 287. It had an infrared outburst of large amplitude during the beginning of 1983. The J-K colour index increased linearly, and infrared spectrum also linearly steepened during the years 1975-1990. After then, both the J-K colour and spectral index began to recover. Both the J-K colour and the near-infrared spectral index shows also a strong correlation with the flux intensity, in the sense that when OJ 287 is fainter, J-K is larger, and the near-infrared spectrum steeper. These properties show a very important similarity with the optical data of OJ 287 from the same time interval (Takalo & Sillanpaa 1989). Our results argue that a single variable synchrotron source might be responsible for the photometric behaviour of OJ 287 in the near-infrared and optical regions.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0365-0138
URL查看原文
WOS记录号WOS:A1996VM69000003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL LAC OBJECTS ; MULTIFREQUENCY OBSERVATIONS ; LACERTAE OBJECTS ; BLAZARS ; PHOTOMETRY ; VARIABILITY ; POLARIMETRY ; OJ-287 ; CONTINUUM ; SAMPLE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6890
专题星系研究组
通讯作者Zhang YH(张有宏)
作者单位Yunnan Observatory, The Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, P.R. China
推荐引用方式
GB/T 7714
Zhang YH,Xie GZ. Infrared properties of OJ 287[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,1996,119(2):199-203.
APA Zhang YH,&Xie GZ.(1996).Infrared properties of OJ 287.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,119(2),199-203.
MLA Zhang YH,et al."Infrared properties of OJ 287".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 119.2(1996):199-203.
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