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- W2022758242 abstract "Abstract 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 ΔJ = 1.0, ΔH = 0.9, and ΔK = 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." @default.
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- W2022758242 date "2002-10-01" @default.
- W2022758242 modified "2023-09-27" @default.
- W2022758242 title "The infrared variability of QSO 3C 273" @default.
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- W2022758242 doi "https://doi.org/10.1016/s0275-1062(02)00090-5" @default.
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