| |
 |
| Paper: |
Near-Infrared Variable AGNs Derived by Cross-Identification |
| Volume: |
442, Astronomical Data Analysis Software and Systems XX (ADASSXX) |
| Page: |
555 |
| Authors: |
Kouzuma, S.; Yamaoka, H. |
| Abstract: |
We examined near-infrared variability of Active Galactic Nuclei (AGNs) using cross-identification. We first cross-identified the Two Micron All Sky Survey (2MASS) catalog with two AGN catalogs (namely, Quasars and Active Galactic Nuclei (12th Ed.) and the SDSS-DR5 quasar catalog), and extracted a 2MASS counterpart for a source in the AGN catalogs. Each AGN with a 2MASS counterpart was further cross-identified with DENIS and UKIDSS catalogs.
On the basis of standard deviations for magnitude difference between 2MASS/DENIS or 2MASS/UKIDSS,
we extracted the sources with magnitude difference over 3σ as near-infrared variable AGNs.
We discuss correlations between near-infrared variability and physical parameters
(i.e., redshift, luminosity, and a near-infrared color). |
|
|
|
|
|
