Article (Scientific journals)
The role of host galaxy for the environmental dependence of active nuclei in local galaxies
Davies, R. I.; Hicks, E. K. S.; Erwin, P. et al.
2017In Monthly Notices of the Royal Astronomical Society, 466, p. 4917-4927
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Keywords :
galaxies: active; galaxies: haloes; galaxies: luminosity function; mass function; galaxies: nuclei; galaxies: Seyfert
Abstract :
[en] We discuss the environment of local hard X-ray selected active galaxies, with reference to two independent group catalogues. We find that the fraction of these AGN in S0 host galaxies decreases strongly as a function of galaxy group size (halo mass) - which contrasts with the increasing fraction of galaxies of S0 type in denser environments. However, there is no evidence for an environmental dependence of AGN in spiral galaxies. Because most AGN are found in spiral galaxies, this dilutes the signature of environmental dependence for the population as a whole. We argue that the differing results for AGN in disc-dominated and bulge-dominated galaxies are related to the source of the gas fuelling the AGN, and so may also impact the luminosity function, duty cycle and obscuration. We find that there is a significant difference in the luminosity function for AGN in spiral and S0 galaxies, and tentative evidence for some difference in the fraction of obscured AGN.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Davies, R. I.;  Max Planck Institut für extraterrestrische Physik
Hicks, E. K. S.
Erwin, P.
Burtscher, L.
Contursi, A.
Genzel, R.
Janssen, A.;  Max Planck Institut für extraterrestrische Physik
Koss, M.
Lin, M.-Y.
Lutz, D.
Maciejewski, W.
Müller-Sánchez, F.
Orban De Xivry, Gilles  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Ricci, C.
Riffel, R.
Riffel, R. A.
Rosario, D.
Schartmann, M.
Schnorr-Müller, A.
Shimizu, T.
Sternberg, A.
Sturm, E.
Storchi-Bergmann, T.
Tacconi, L.
Veilleux, S.
More authors (15 more) Less
Language :
English
Title :
The role of host galaxy for the environmental dependence of active nuclei in local galaxies
Publication date :
2017
Journal title :
Monthly Notices of the Royal Astronomical Society
ISSN :
0035-8711
eISSN :
1365-2966
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
466
Pages :
4917-4927
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 August 2017

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