Spectral energy distributions of type 1 AGN in XMM-COSMOS - II. Shape evolution

被引：30

作者：

Hao, Heng ^{[1
,2
]}

Elvis, Martin ^{[2
]}

Civano, Francesca ^{[2
,3
]}

Zamorani, Gianni ^{[4
]}

Ho, Luis C. ^{[5
]}

Comastri, Andrea ^{[4
]}

Brusa, Marcella ^{[6
,7
]}

Bongiorno, Angela ^{[6
,8
]}

Merloni, Andrea ^{[6
]}

Trump, Jonathan R. ^{[9
]}

Salvato, Mara ^{[10
,11
]}

Impey, Chris D. ^{[12
]}

Koekemoer, Anton M. ^{[13
]}

Lanzuisi, Giorgio ^{[6
]}

Celotti, Annalisa ^{[1
,14
,15
]}

Jahnke, Knud ^{[16
]}

Vignali, Cristian ^{[4
,7
]}

Silverman, John D. ^{[17
]}

Urry, C. Megan ^{[18
,19
]}

Schawinski, Kevin ^{[20
]}

Capak, Peter ^{[21
]}

机构：

[1] SISSA, I-34136 Trieste, Italy

[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[3] Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA

[4] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy

[5] Observ Carnegie Inst Sci, Pasadena, CA 91101 USA

[6] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[7] Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy

[8] INAF Osservatorio Astron Roma, I-00040 Rome, Italy

[9] Univ Calif Santa Cruz, UCO Lick Observ, Santa Cruz, CA 95064 USA

[10] IPP Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[11] Excellence Cluster, D-85748 Garching, Germany

[12] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[13] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[14] INAF Osservatorio Astron Brera, I-23807 Merate, Italy

[15] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[16] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[17] Univ Tokyo, Kavli Inst Phys & Math Universe, Todai Inst Adv Study, Kashiwa, Chiba 2778583, Japan

[18] Yale Univ, Dept Phys, New Haven, CT 06511 USA

[19] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06511 USA

[20] ETH, Inst Astron, Dept Phys, CH-8093 Zurich, Switzerland

[21] CALTECH, Pasadena, CA 91125 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 438卷 / 02期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

surveys; galaxies: evolution; quasars: general; ACTIVE GALACTIC NUCLEI; WIDE-FIELD SURVEY; BLACK-HOLE MASSES; X-RAY-EMISSION; HOST GALAXIES; LUMINOSITY FUNCTION; OPTICAL-PROPERTIES; SEYFERT-GALAXIES; REDSHIFT QUASARS; ACCRETION DISKS;

D O I：

10.1093/mnras/stt2274

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The mid-infrared-to-ultraviolet (0.1-10 mu m) 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.

引用

页码：1288 / 1304

页数：17

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