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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.
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
2002-10
Volume26Issue:4Pages:398-403
DOI10.1016/S0275-1062(02)00090-5
Contribution Rank第4完成单位
Indexed BySCI
KeywordGalaxies : Active Quasars : 3c237 Galaxies : Fundamental Parameters Infrared : Galaxies
AbstractThe 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0275-1062
URL查看原文
WOS IDWOS:000180030600003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBL LACERTAE OBJECTS ; RAY LOUD BLAZARS ; SPECTRAL INDEX ; RADIO
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6947
Collection星系研究组
Corresponding AuthorWen, SL (reprint author), Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China.
Affiliation1.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
Recommended Citation
GB/T 7714
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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