Chandra COSMOS Legacy Survey : Clustering dependence of Type 2 active galactic nuclei on host galaxy properties

Show full item record



Permalink

http://hdl.handle.net/10138/320848

Citation

Allevato , V , Viitanen , A , Finoguenov , A , Civano , F , Suh , H , Shankar , F , Bongiorno , A , Ferrara , A , Gilli , R , Miyaji , T , Marchesi , S , Cappelluti , N & Salvato , M 2019 , ' Chandra COSMOS Legacy Survey : Clustering dependence of Type 2 active galactic nuclei on host galaxy properties ' , Astronomy & Astrophysics , vol. 632 , A88 . https://doi.org/10.1051/0004-6361/201936191

Title: Chandra COSMOS Legacy Survey : Clustering dependence of Type 2 active galactic nuclei on host galaxy properties
Author: Allevato, V.; Viitanen, A.; Finoguenov, A.; Civano, F.; Suh, H.; Shankar, F.; Bongiorno, A.; Ferrara, A.; Gilli, R.; Miyaji, T.; Marchesi, S.; Cappelluti, N.; Salvato, M.
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
Date: 2019-12-06
Language: eng
Number of pages: 10
Belongs to series: Astronomy & Astrophysics
ISSN: 0004-6361
URI: http://hdl.handle.net/10138/320848
Abstract: Aims. We perform clustering measurements of 800 X-ray selected Chandra COSMOS Legacy (CCL) Type 2 active galactic nuclei (AGN) with known spectroscopic redshift to probe the halo mass dependence on AGN host galaxy properties, such as galaxy stellar mass M-star, star formation rate (SFR), and specific black hole accretion rate (BHAR; lambda(BHAR)) in the redshift range z;=;[0-3]. Methods. We split the sample of AGN with known spectroscopic redshits according to M-star, SFR and lambda(BHAR), while matching the distributions in terms of the other parameters, including redshift. We measured the projected two-point correlation function w(p)(r(p)) and modeled the clustering signal, for the different subsamples, with the two-halo term to derive the large-scale bias b and corresponding typical mass of the hosting halo. Results. We find no significant dependence of the large-scale bias and typical halo mass on galaxy stellar mass and specific BHAR for CCL Type 2 AGN at mean z;similar to;1, while a negative dependence on SFR is observed, i.e. lower SFR AGN reside in richer environment. Mock catalogs of AGN, matched to have the same X-ray luminosity, stellar mass, lambda(BHAR), and SFR of CCL Type 2 AGN, almost reproduce the observed M-star - M-h, lambda(BHAR) - M-h and SFR-M-h relations, when assuming a fraction of satellite AGN f(AGN)(sat) similar to 0.15fAGNsat similar to 0.15$ f_{\mathrm{AGN}}{\mathrm{sat}} \sim 0.15 $. This corresponds to a ratio of the probabilities of satellite to central AGN of being active Q;similar to;2. Mock matched normal galaxies follow a slightly steeper M-star - M-h relation, in which low mass mock galaxies reside in less massive halos than mock AGN of similar mass. Moreover, matched mock normal galaxies are less biased than mock AGN with similar specific BHAR and SFR, at least for Q > 1.
Subject: galaxies
active
large-scale structure of Universe
quasars
general
dark matter
WIDE-FIELD SURVEY
SUPERMASSIVE BLACK-HOLES
COLD DARK-MATTER
X-RAY AGN
REDSHIFT SURVEY
STAR-FORMATION
STELLAR MASS
POPULATION SYNTHESIS
SATELLITE GALAXIES
CROSS-CORRELATION
115 Astronomy, Space science
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
aa36191_19.pdf 1.562Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record