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.
Original language | English (US) |
---|---|
Pages (from-to) | 1288-1304 |
Number of pages | 17 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 438 |
Issue number | 2 |
DOIs | |
State | Published - Mar 2014 |
Keywords
- Galaxies: evolution
- Quasars: general
- Surveys
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Fingerprint
Dive into the research topics of 'Spectral energy distributions of type 1 AGN in XMM-COSMOS - II. Shape evolution'. Together they form a unique fingerprint.Datasets
-
SEDs of type I AGN in XMM-COSMOS. II.
Hao, H. (Creator), Elvis, M. (Creator), Civano, F. (Creator), Zamorani, G. (Creator), Ho, L. C. (Creator), Comastri, A. (Creator), Brusa, M. (Creator), Bongiorno, A. (Creator), Merloni, A. (Creator), Trump, J. R. (Creator), Salvato, M. (Creator), Impey, C. D. (Creator), Koekemoer, A. M. (Creator), Lanzuisi, G. (Creator), Celotti, A. (Creator), Jahnke, K. (Creator), Vignali, C. (Creator), Silverman, J. D. (Creator), Megan, U. C. (Contributor), Schawinski, K. (Creator) & Capak, P. (Creator), Centre de Donnees Strasbourg (CDS), 2015
DOI: 10.26093/cds/vizier.74381288, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/438/1288
Dataset