We present the first estimate of the evolution of type 1 AGNs in the IR (15 mum) obtained from the ELAIS survey in the S1 region. We find that the luminosity function (LF) of Type 1 AGNs at 15mum 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 L-15(z)proportional to(1+z)(k), with k=3.00(-0.20)(+0.16) in a (Omega(m),Omega(Lambda))=(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 similar to 2% from Type 1. AGN to the total Cosmic Infrared Background (CIRB) at 15 mum.
Matute, I., LA FRANCA, F., Gruppioni, C., Pozzi, R., Lari, C. (2002). Unveiling the evolution of type I AGNs in the IR (15 mu m) - As seen by ISO in the ELAIS-S1 region. In AGN SURVEYS (pp.167-172). 390 ASHTON AVE, SAN FRANCISCO, CA : ASTRONOMICAL SOC PACIFIC,.
Unveiling the evolution of type I AGNs in the IR (15 mu m) - As seen by ISO in the ELAIS-S1 region
LA FRANCA, Fabio;
2002-01-01
Abstract
We present the first estimate of the evolution of type 1 AGNs in the IR (15 mum) obtained from the ELAIS survey in the S1 region. We find that the luminosity function (LF) of Type 1 AGNs at 15mum 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 L-15(z)proportional to(1+z)(k), with k=3.00(-0.20)(+0.16) in a (Omega(m),Omega(Lambda))=(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 similar to 2% from Type 1. AGN to the total Cosmic Infrared Background (CIRB) at 15 mum.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
