The mid-infrared-to-ultraviolet (0.1-10 μm) spectral energy distribution (SED) shapes of 407 X-ray-selected radio-quiet type 1 active galactic nuclei (AGN) in the wide-field `Cosmic Evolution Survey' (COSMOS) have been studied for signs of evolution. For a sub-sample of 200 radio-quiet quasars with black hole mass estimates and host galaxy corrections, we studied their mean SEDs as a function of a broad range of redshift, bolometric luminosity, black hole mass and Eddington ratio, and compared them with the Elvis et al. (E94) type 1 AGN mean SED. We found that the mean SEDs in each bin are closely similar to each other, showing no statistical significant evidence of dependence on any of the analysed parameters. We also measured the SED dispersion as a function of these four parameters, and found no significant dependences. The dispersion of the XMM-COSMOS SEDs is generally larger than E94 SED dispersion in the ultraviolet, which might be due to the broader `window function' for COSMOS quasars, and their X-ray-based selection.

Spectral energy distribution of type 1 AGNs in XMM-COSMOS survey. II – Shape evolution / Hao, Heng; Elvis, M.; Civano, F.; Zamorani, G.; Ho, L. C.; Comastri, A.; Bongiorno, A.; Merloni, A.; Brusa, M.; Trump, J. R.; Salvato, M.; Impey, C. D.; Koekemoer, A. M.; Lanzuisi, G.; Celotti, Anna Lisa; Jahnke, K.; Vignali, C.; Silverman, D.; Urry, C. M.; Schawinski, K.; Capak, P.. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 1365-2966. - 438:2(2014), pp. 1288-1304. [10.1093/mnras/stt2274]

Spectral energy distribution of type 1 AGNs in XMM-COSMOS survey. II – Shape evolution

Hao, Heng;Celotti, Anna Lisa;
2014-01-01

Abstract

The mid-infrared-to-ultraviolet (0.1-10 μm) spectral energy distribution (SED) shapes of 407 X-ray-selected radio-quiet type 1 active galactic nuclei (AGN) in the wide-field `Cosmic Evolution Survey' (COSMOS) have been studied for signs of evolution. For a sub-sample of 200 radio-quiet quasars with black hole mass estimates and host galaxy corrections, we studied their mean SEDs as a function of a broad range of redshift, bolometric luminosity, black hole mass and Eddington ratio, and compared them with the Elvis et al. (E94) type 1 AGN mean SED. We found that the mean SEDs in each bin are closely similar to each other, showing no statistical significant evidence of dependence on any of the analysed parameters. We also measured the SED dispersion as a function of these four parameters, and found no significant dependences. The dispersion of the XMM-COSMOS SEDs is generally larger than E94 SED dispersion in the ultraviolet, which might be due to the broader `window function' for COSMOS quasars, and their X-ray-based selection.
2014
438
2
1288
1304
stt2274
10.1093/mnras/stt2274
https://arxiv.org/abs/1210.3033
http://inspirehep.net/record/1190292
Hao, Heng; Elvis, M.; Civano, F.; Zamorani, G.; Ho, L. C.; Comastri, A.; Bongiorno, A.; Merloni, A.; Brusa, M.; Trump, J. R.; Salvato, M.; Impey, C. D...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/14892
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