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Inner Size of a Dust Torus in the Seyfert 1 Galaxy NGC 4151

Minezaki, Takeo; Yoshii, Yuzuru; Kobayashi, Yukiyasu; Enya, Keigo; Sugden, D.E.; Tomita, Hiroyuki; Aoki, K; Peterson, Bruce

Description

The most intense monitoring observations yet made were carried out on the Seyfert 1 galaxy NGC 4151 in the optical and near-infrared wave bands. A lag from the optical light curve to the near-infrared light curve was measured. The lag time between the V and K light curves at the flux minimum in 2001 was precisely 48-3+2 days, as determined by a cross-correlation analysis. The correlation between the optical luminosity of an active galactic nucleus (AGN) and the lag time between the UV/optical...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
URI: http://hdl.handle.net/1885/87375
Source: Astrophysical Journal, The

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