Deep Extragalactic VIsible Legacy Survey (DEVILS): identification of AGN through SED fitting and the evolution of the bolometric AGN luminosity function

被引：35

作者：

Thorne, Jessica E. ^{[1
,2
]}

Robotham, Aaron S. G. ^{[1
,2
]}

Davies, Luke J. M. ^{[1
]}

Bellstedt, Sabine ^{[1
]}

Brown, Michael J. I. ^{[3
]}

Croom, Scott M. ^{[2
,4
]}

Delvecchio, Ivan ^{[5
]}

Es, Brent Gro V. ^{[1
]}

Jarvis, Matt J. ^{[6
,7
]}

Shabala, Stanislav S. ^{[2
,8
]}

Seymour, Nick ^{[9
]}

Whittam, Imogen H. ^{[6
,7
]}

Matias, Bra V. O. ^{[1
]}

Cook, Robin H. W. ^{[1
]}

Driver, Simon P. ^{[1
]}

Holwerda, Benne ^{[10
]}

Phillipps, Steven ^{[11
]}

Siudek, Malgorzata ^{[12
,13
]}

机构：

[1] Univ Western Australia, ICRAR, 35 Stirling Highway, Crawley, WA 6009, Australia

[2] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Crawley, Australia

[3] Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia

[4] Univ Sydney, Sydney Inst Astron, Sch Phys, A28, Sydney, NSW 2006, Australia

[5] INAF Osservatorio Astron Brera, Via Brera 28, I-20121 Milan, Italy

[6] Univ Oxford, Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England

[7] Univ Western Cape, Dept Phys & Astron, Robert Sobukwe Rd, ZA-7535 Bellville, South Africa

[8] Univ Tasmania, Sch Nat Sci, Private Bag 37, Hobart, Tas 7001, Australia

[9] Curtin Univ, ICRAR, Bentley, WA 6102, Australia

[10] Univ Louisville, Dept Phys & Astron, 102 Nat Sci Bldg, Louisville, KY 40292 USA

[11] Univ Bristol, Astrophys Grp, Sch Phys, Bristol BS8 1TL, Avon, England

[12] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Barcelona 08193, Spain

[13] Natl Ctr Nucl Res, Ul Pasteura 7, PL-02093 Warsaw, Poland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 509卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

galaxies: active; galaxies: evolution; galaxies: general; galaxies: nuclei; quasars: general; ACTIVE GALACTIC NUCLEI; MASS ASSEMBLY GAMA; SUPERMASSIVE BLACK-HOLES; SPECTRAL ENERGY-DISTRIBUTIONS; STAR-FORMATION RATES; COSMOLOGICAL EVOLUTION; HOST GALAXIES; MID-IR; MIDINFRARED SELECTION; SPECTROSCOPIC SURVEY;

D O I：

10.1093/mnras/stab3208

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Active galactic nuclei (AGN) are typically identified through radio, mid-infrared, or X-ray emission or through the presence of broad and/or narrow emission lines. AGN can also leave an imprint on a galaxy's spectral energy distribution (SED) through the re-processing of photons by the dusty torus. Using the SED fitting code PROSPECT with an incorporated AGN component, we fit the far-ultraviolet to far-infrared SEDs of similar to 494 000 galaxies in the D10-COSMOS field and similar to 230 000 galaxies from the GAMA survey. By combining an AGN component with a flexible star formation and metallicity implementation, we obtain estimates for the AGN luminosities, stellar masses, star formation histories, and metallicity histories for each of our galaxies. We find that PROSPECT can identify AGN components in 91 per cent of galaxies pre-selected as containing AGN through narrow-emission line ratios and the presence of broad lines. Our PROSPECT-derived AGN luminosities show close agreement with luminosities derived for X-ray selected AGN using both the X-ray flux and previous SED fitting results. We show that incorporating the flexibility of an AGN component when fitting the SEDs of galaxies with no AGN has no significant impact on the derived galaxy properties. However, in order to obtain accurate estimates of the stellar properties of AGN host galaxies, it is crucial to include an AGN component in the SED fitting process. We use our derived AGN luminosities to map the evolution of the AGN luminosity function for 0 < z < 2 and find good agreement with previous measurements and predictions from theoretical models.

引用

页码：4940 / 4961

页数：22

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