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Unveiling the Evolution of Type I AGNs in the IR (15μm) — As Seen by ISO in the ELAIS-S1 Region

Published online by Cambridge University Press:  12 April 2016

Israel Matute ,
Fabio La Franca ,
Carlotta Gruppioni ,
Francesca Pozzi  and
Carlo Lari
Israel Matute
Affiliation:
Dipartimento di Fisica, Università degli studi“Roma Tre”, Via della Vasca Navale 84, I-00146 Roma, Italy
Fabio La Franca
Affiliation:
Dipartimento di Fisica, Università degli studi“Roma Tre”, Via della Vasca Navale 84, I-00146 Roma, Italy
Carlotta Gruppioni
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
Francesca Pozzi
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
Carlo Lari
Affiliation:
Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy

Abstract

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We present the first estimate of the evolution of type 1 AGNs in the IR (15 μm) obtained from the ELAIS survey in the S1 region. We find that the luminosity function (LF) of Type 1 AGNs at 15μm is fairly well represented by a double power-law function with a bright slope of 2.9 and a faint slope of 1.1. There is evidence for significant cosmological evolution according to a pure luminosity evolution model L15(z)α(l+z)k, with in a (Ωm,ΩΛ)=(1.0,0.0) cosmology. This evolution is similar to what is observed at other wavebands. From the luminosity function and its evolution, we estimate a contribution of ~ 2% from Type 1 AGN to the total Cosmic Infrared Background (CIRB) at 15 μm.

Type
Part 2. Infrared and Submillimeter Surveys for AGN
Information
International Astronomical Union Colloquium , Volume 184: AGN Surveys , 2002 , pp. 167 - 172
Copyright
Copyright © Astronomical Society of the Pacific 2002

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