Imprints of the large-scale structure on AGN formation and evolution

被引:9
作者
Porqueres, Natalia [1 ,2 ]
Jasche, Jens [1 ]
Ensslin, Torsten A. [2 ,3 ]
Lavaux, Guilhem [4 ,5 ]
机构
[1] Tech Univ Munich, Excellence Cluster Universe, Boltzmannstr 2, D-85748 Garching, Germany
[2] Max Planck Inst Astrophys MPA, Karl Schwarzschild Str 1, D-85741 Garching, Germany
[3] Ludwig Maximilians Univ Munchen, Geschwister Scholl Pl 1, D-80539 Munich, Germany
[4] Sorbonne Univ, ILP, 98bis Blvd Arago, F-75014 Paris, France
[5] UPMC Univ Paris 6, Sorbonne Univ, IAP, CNRS,UMR 7095, 98bis Blvd Arago, F-75014 Paris, France
关键词
large-scale structure of Universe; galaxies: active; galaxies: evolution; galaxies: formation; galaxies: Seyfert; DIGITAL SKY SURVEY; SUPERMASSIVE BLACK-HOLES; ACTIVE GALACTIC NUCLEI; GALAXIES; EMISSION; CLASSIFICATION; ENVIRONMENTS; CLUSTERS; QUASARS; MODELS;
D O I
10.1051/0004-6361/201732141
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Black hole masses are found to correlate with several global properties of their host galaxies, suggesting that black holes and galaxies have an intertwined evolution and that active galactic nuclei (AGN) have a significant impact on galaxy evolution. Since the large-scale environment can also affect AGN, this work studies how their formation and properties depend on the environment. We have used a reconstructed three-dimensional high-resolution density field obtained from a Bayesian large-scale structure reconstruction method applied to the 2M++ galaxy sample. A web-type classification relying on the shear tensor is used to identify different structures on the cosmic web, defining voids, sheets, filaments, and clusters. We confirm that the environmental density affects the AGN formation and their properties. We found that the AGN abundance is equivalent to the galaxy abundance, indicating that active and inactive galaxies reside in similar dark matter halos. However, occurrence rates are different for each spectral type and accretion rate. These differences are consistent with the AGN evolutionary sequence suggested by previous authors, Seyferts and Transition objects transforming into low-ionization nuclear emission line regions (LINERs), the weaker counterpart of Seyferts. We conclude that AGN properties depend on the environmental density more than on the web-type. More powerful starbursts and younger stellar populations are found in high densities, where interactions and mergers are more likely. AGN hosts show smaller masses in clusters for Seyferts and Transition objects, which might be due to gas stripping. In voids, the AGN population is dominated by the most massive galaxy hosts.
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页数:9
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