JHK Imaging Photometry of Seyfert I Active Galactic Nuclei and Quasars. II. Observation of Long-term Variability

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

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JHK Imaging Photometry of Seyfert I Active Galactic Nuclei and Quasars. II. Observation of Long-term Variability

Date

2002

Authors

Enya, Keigo

Yoshii, Yuzuru

Kobayashi, Yukiyasu

Minezaki, Takeo

Sugden, D.E.

Tomita, Hiroyuki

Peterson, Bruce

Publisher

IOP Publishing

Abstract

Observations of 226 AGNs in the near-infrared J, H, and K′ bands are presented along with the analysis of the observations for variability. Our sample consists mainly of Seyfert 1 AGNs and QSOs. About a quarter of the objects in each category are radio