Sloan Digital Sky Survey Quasars in the Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE) ELAIS N1 Field: Properties and Spectral Energy Distributions
Abstract
We present a mid-infrared (MIR) analysis of 35 quasars with spectroscopic redshifts selected from the Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE). We discuss their optical and MIR colors and show that these quasars occupy well-defined regions in MIR color-color space. We examine the issue of type 1 active galactic nuclei candidate selection in detail and propose new selection methods based on MIR colors. The available multiband data allow us to construct two new, well-sampled quasar templates, covering wavelengths from the ultraviolet to the MIR.
- Publication:
-
The Astronomical Journal
- Pub Date:
- March 2005
- DOI:
- 10.1086/428003
- Bibcode:
- 2005AJ....129.1198H
- Keywords:
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- Galaxies: Active;
- Infrared: General;
- Galaxies: Quasars: General