Hatziminaoglou, E.; Pérez-Fournon, I.; Polletta, M.; Afonso-Luis, A.; Hernán-Caballero, A.; Montenegro-Montes, F.M.; Lonsdale, C.; Xu, C.K.; Franceschini, A.; Rowan-Robinson, M.; Babbedge, T.; Smith, H.E.; Surace, J.; Shupe, D.; Fang, F.; Farrah, D.; Oliver, S.; González-Solares, E.A. and Serjeant, S.
(2005).
Sloan Digital Sky Survey Quasars in the Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE) ELAIS N1 Field: Properties and Spectral Energy Distributions.
Astronomical Journal, 129(3),
pp. 1198–1211.
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.
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