Results 221 to 227 of about 159,044 (227)

Galaxies Hosting AGN Activity and Their Environments

2010
Nuclear activity in galaxies (AGN) has recently started attracting a broader attention, in one hand, because of the relationship found between the mass of the central spheroidal regions of galaxies and the black holes they host. On the other hand, the output energy provided by AGN (feedback) seems to be crucial for current cosmological simulations to ...
Isabel Márquez, Josefa Masegosa
openaire   +2 more sources

Stellar Populations in the Host Galaxy of AGNs

2001
The relationship of an AGN to its host galaxy is one crucial question in the study of galaxy evolution. We perform stellar population synthesis in the central regions of galaxies of different levels of activity. Quantification of the stellar contribution is carried out in the visible range and in the near IR using the equivalent widths of the ...
Didier Pelat, Monique Joly, C. Boisson
openaire   +2 more sources

Host galaxies and the unification of radio-loud AGN

New Astronomy Reviews, 2002
Our HST WFPC2 survey of 110 BL Lac objects, from six complete X-ray-, radio-, and optically-selected catalogs, probes the host galaxies of low-luminosity radio sources in the redshift range ...
URRY CM, SCARPA R, O'DOWD M, GIAVALISCO M, FALOMO R, PESCE JE, TREVES, ALDO   +6 more
openaire   +3 more sources

Host Galaxies of Radio-Loud AGN

1997
We are studying the host galaxies and cluster environments of a sample of radio-loud AGN. The sample is large enough to compare sub-samples (quasars, FRI and FRII radio galaxies, RBL and XBL). First results show that elliptical host galaxies fall on the μ e — r e relation of bright elliptical galaxies.
Jochen Heidt, J. Fried
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Two-Dimensional Modeling of AGN Host Galaxies

2001
We present a method to model the two-dimensional light distribution of Quasar and Seyfert 1 host galaxies by multi-component fitting. The method has been tested on a large set of simulations, showing its ability to recover total fluxes and morphological properties within the observational errors.
Kuhlbrodt, B., Wisotzki, Lutz, Jahnke, Knud   +2 more
openaire   +3 more sources

AGN and the Characteristics of their Host Galaxies

2013
The vast majority of optically identified active galactic nuclei (AGNs) in the local universe reside in host galaxies with prominent bulges, supporting the hypothesis that black hole formation and growth is fundamentally connected to the buildup of galaxy bulges.
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Host galaxies of AGNs

2013
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