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The infrared variability of QSO 3C 273
Wen, SL1; Peng, ZM2,3; Fan, JH2; Xie GZ(谢光中)4; Wen, SL (reprint author), Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.
发表期刊CHINESE ASTRONOMY AND ASTROPHYSICS
2002-10
卷号26期号:4页码:398-403
DOI10.1016/S0275-1062(02)00090-5
产权排序第4完成单位
收录类别SCI
关键词Galaxies : Active Quasars : 3c237 Galaxies : Fundamental Parameters Infrared : Galaxies
摘要The near-infrared data of the quasar 3C273 are collected from available literature and are used to analyze its variability properties. The largest amplitudes of variations are DeltaJ = 1.0, DeltaH = 0.9, and DeltaK = 0.86. The color indices are < J - H >= 0.82, < J - K >= 1.96, and < H - K >= 1.13. Analysis with the discrete correlation function (DCF) method indicates that the variability between any two infrared bands is correlated without any time lag. The relation between the color index and brightness is also investigated and the result indicates that the spectrum steepens when the source first dims, while it flattens after the source has dimmed to a some extent, suggesting that the emission of 3C 273 at near-IR consists of at least two components. Some discussions are presented.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0275-1062
URL查看原文
WOS记录号WOS:000180030600003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL LACERTAE OBJECTS ; RAY LOUD BLAZARS ; SPECTRAL INDEX ; RADIO
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6947
专题星系研究组
通讯作者Wen, SL (reprint author), Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.
作者单位1.Department of Physics, Hunan Normal University, Changsha 410081, People's Republic of China
2.Center for Astrophysics, Guangzhou University, Guangzhou 510405, People's Republic of China
3.Department of Physics, Yunnan University, Kunming 650000, People's Republic of China
4.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
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Wen, SL,Peng, ZM,Fan, JH,et al. The infrared variability of QSO 3C 273[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2002,26(4):398-403.
APA Wen, SL,Peng, ZM,Fan, JH,Xie GZ,&Wen, SL .(2002).The infrared variability of QSO 3C 273.CHINESE ASTRONOMY AND ASTROPHYSICS,26(4),398-403.
MLA Wen, SL,et al."The infrared variability of QSO 3C 273".CHINESE ASTRONOMY AND ASTROPHYSICS 26.4(2002):398-403.
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