Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Quick Search
My eDoc
Session History
Support Wiki
Direct access to
document ID:

          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 693718.0, MPI für Astronomie / Publikationen_mpia
Spectral energy distributions of type 1 AGN in XMM-COSMOS - II. Shape evolution
Authors:Hao, H.; Elvis, M.; Civano, F.; Zamorani, G.; Ho, L. C.; Comastri, A.; Brusa, M.; Bongiorno, A.; Merloni, A.; Trump, J. R.; Salvato, M.; Impey, C. D.; Koekemoer, A. M.; Lanzuisi, G.; Celotti, A.; Jahnke, K.; Vignali, C.; Silverman, J. D.; Urry, C. M.; Schawinski, K.; Capak, P.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:Monthly Notices of the Royal Astronomical Society
Issue / Number:2
Start Page:1288
End Page:1304
Audience:Not Specified
Abstract / Description: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.
Free Keywords:surveys; galaxies: evolution; quasars: general
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.