Triggering active galactic nuclei in galaxy clusters

Abstract We model the triggering of active galactic nuclei (AGN) in galaxy clusters using the semi-analytic galaxy formation model SAGE. We prescribe triggering methods based on the ram pressure galaxies experience as they move throughout the intracluster medium, which is hypothesized to trigger sta...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2018-03, Vol.474 (3), p.3615-3628
Hauptverfasser:	Marshall, Madeline A, Shabala, Stanislav S, Krause, Martin G H, Pimbblet, Kevin A, Croton, Darren J, Owers, Matt S
Format:	Artikel
Sprache:	eng
Schlagworte:	Active galactic nuclei Active galaxies Astronomical models Cluster analysis Computer simulation Galactic clusters Galactic evolution Galaxy distribution Ram pressure Red shift Sky surveys (astronomy) Star & galaxy formation Star formation Stars & galaxies Velocity Velocity distribution
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Zusammenfassung:	Abstract We model the triggering of active galactic nuclei (AGN) in galaxy clusters using the semi-analytic galaxy formation model SAGE. We prescribe triggering methods based on the ram pressure galaxies experience as they move throughout the intracluster medium, which is hypothesized to trigger star formation and AGN activity. The clustercentric radius and velocity distribution of the simulated active galaxies produced by these models are compared with those of AGN and galaxies with intense star formation from a sample of low-redshift relaxed clusters from the Sloan Digital Sky Survey. The ram pressure triggering model that best explains the clustercentric radius and velocity distribution of these observed galaxies has AGN and star formation triggered if 2.5 × 10−14 Pa
ISSN:	0035-8711 1365-2966
DOI:	10.1093/mnras/stx2996