PRIMUS: THE RELATIONSHIP BETWEEN STAR FORMATION AND AGN ACCRETION

被引：84

作者：

Azadi, Mojegan ^{[1
]}

Aird, James ^{[2
,3
]}

Coil, Alison L. ^{[1
]}

Moustakas, John ^{[4
]}

Mendez, Alexander J. ^{[1
]}

Blanton, Michael R. ^{[5
]}

Cool, Richard J. ^{[6
]}

Eisenstein, Daniel J. ^{[7
]}

Wong, Kenneth C. ^{[8
]}

Zhu, Guangtun ^{[9
]}

机构：

[1] Univ Calif San Diego, Dept Phys, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA

[2] Univ Durham, Dept Phys, Durham DH1 3LE, England

[3] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[4] Siena Coll, Dept Phys & Astron, Loudonville, NY 12211 USA

[5] NYU, Dept Phys, Ctr Cosmol & Particle Phys, New York, NY 10003 USA

[6] Univ Arizona, MMT Observ, Tucson, AZ 85721 USA

[7] Harvard Coll Observ, Cambridge, MA 02138 USA

[8] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan

[9] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL | 2015年 / 806卷 / 02期

基金：

美国国家科学基金会;

关键词：

galaxies: active; galaxies: evolution; X-rays: galaxies; SUPERMASSIVE BLACK-HOLES; ACTIVE GALACTIC NUCLEUS; X-RAY AGN; ULTRALUMINOUS INFRARED GALAXIES; SPACE-TELESCOPE OBSERVATIONS; FIELD-SOUTH SURVEY; HOST GALAXIES; LUMINOSITY FUNCTION; STELLAR-MASS; GOODS-HERSCHEL;

D O I：

10.1088/0004-637X/806/2/187

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the evidence for a connection between active galactic nuclei (AGNs) fueling and star formation by investigating the relationship between the X-ray luminosities of AGNs and the star formation rates (SFRs) of their host galaxies. We identify a sample of 309 AGNs with 10(41) < L-X < 10(44) erg s(-1) at 0.2 < z < 1.2 in the PRIMUS redshift survey. We find AGNs in galaxies with a wide range of SFR at a given L-X. We do not find a significant correlation between SFR and the observed instantaneous L-X for star-forming AGN host galaxies. However, there is a weak but significant correlation between the mean L-X and SFR of detected AGNs in star-forming galaxies, which likely reflects that L-X varies on shorter timescales than SFR. We find no correlation between stellar mass and L-X within the AGN population. Within both populations of star-forming and quiescent galaxies, we find a similar power-law distribution in the probability of hosting an AGN as a function of specific accretion rate. Furthermore, at a given stellar mass, we find a star-forming galaxy similar to 2-3 more likely than a quiescent galaxy to host an AGN of a given specific accretion rate. The probability of a galaxy hosting an AGN is constant across the main sequence of star formation. These results indicate that there is an underlying connection between star formation and the presence of AGNs, but AGNs are often hosted by quiescent galaxies.

引用

页数：18

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