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Correlation space of narrow-line Seyfert 1 galaxies

Published online by Cambridge University Press:  21 February 2013

D. W. Xu  and
S. Komossa
D. W. Xu
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, China email: dwxu@nao.cas.cn
S. Komossa
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
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Abstract

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Narrow-line Seyfert 1 (NLS1) galaxies, as active galactic nuclei with low-mass black holes and high accretion rates, are important targets when addressing questions related to black hole growth and accretion physics. We have studied the correlations among the optical emission-line and continuum properties of a sample of NLS1 galaxies, in comparison with a sample of broad-line Seyfert 1 galaxies. We have shown that the density of the narrow-line region is a key component of Eigenvector 1 space. Density turned out to be as important as the Eddington ratio L/LEdd. This result therefore establishes a close link between central engine and host properties, and places new constraints on host - black hole co-evolution.

Keywords

Galaxies: active – galaxies: ISM – galaxies: Seyfert – quasars: emission lines
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 349 - 350
Copyright
Copyright © International Astronomical Union 2013

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