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The mass estimate in narrow-line Seyfert 1 galaxies

Published online by Cambridge University Press:  24 November 2004

W. Bian  and
Y. Zhao
W. Bian
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China Department of Physics, Nanjing Normal University, Nanjing 210097, China
Y. Zhao
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
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Abstract

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It is possible that narrow-line Seyfert 1 galaxies (NLS1s) are in the early stage of active galactic nuclei (AGNs) evolution. It is important to estimate the mass of supermassive black hole (SBH) in NLS1s. Here we considered the different kinds of methods to estimate the SBH masses in NLS1s. The virial mass from the Hβ linewidth assuming random orbits of broad line regions (BLRs) is consistent with that from the statured soft X-ray luminosity, which showed that most of NLS1s are in the super-Eddington accretion state. The mass from the [O III] linewidth is systematically larger than that from above two methods. It is necessary to measure he bulge stellar dispersion and/or bulge luminosity in NLS1s.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
POSTERS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 77 - 78
Copyright
© 2004 International Astronomical Union