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Physical properties of emitting plasma near massive black holes: the Broad Line Region

Published online by Cambridge University Press:  01 August 2006

D. Ilić ,
G. La Mura ,
L. Č Popović ,
A. I. Shapovalova ,
S. Ciroi ,
V. H. Chavushyan ,
P. Rafanelli ,
A. N. Burenkov  and
A. Marcado
D. Ilić
Affiliation:
Department of Astronomy, Faculty of Mathematics, University of Belgrade, Belgrade, Serbia
G. La Mura
Affiliation:
Dipartimento di Astronomia, Università di Padova, Padova, Italy
L. Č Popović
Affiliation:
Astronomical Observatory, Belgrade, Serbia
A. I. Shapovalova
Affiliation:
Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz, Russia
S. Ciroi
Affiliation:
Dipartimento di Astronomia, Università di Padova, Padova, Italy
V. H. Chavushyan
Affiliation:
Instituto Nacional de Astrofísica, Optica y Electrónica, Puebla, Pue. México Instituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada, México
P. Rafanelli
Affiliation:
Dipartimento di Astronomia, Università di Padova, Padova, Italy
A. N. Burenkov
Affiliation:
Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz, Russia
A. Marcado
Affiliation:
Observatorio Astronomico Nacional, Instituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada, México
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Abstract

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We apply the Boltzmann-Plot (BP) method to the Balmer lines to estimate the physical propertiesin the Broad Line Region of Active Galactic Nuclei. We study the Balmer lines of a sample of 90 AGN from Sloan Digital Sky Survey database, as well as the time variability of the BP parameter A of NGC 5548.

Keywords

Galaxies: active-(galaxies:) quasars: emission lines – galaxies: Seyfert
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 383 - 384
Copyright
Copyright © International Astronomical Union 2007

References

Griem, H. R. 1997, Principles of Plasma Spectroscopy (Cambridge University Press)CrossRefGoogle Scholar
Ilić, D., Popović, L. Č.Bon, E., Mediavilla, E. G. & Chavushyan, V. H. 2006, MNRAS, 371, 1610CrossRefGoogle Scholar
LaMura, G. Mura, G., Popović, L. Č., Ciroi, S., Rafanelli, P. & Ilić, D. 2006, ApJ submittedGoogle Scholar
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Popović, L. Č., Shapovalova, A. I., Chavushyan, V. H., Ilić, D., Burenkov, A. N. & Marcado, A. 2006, astro-ph/0511676Google Scholar
Shapovalova, A. I. et al. 2004, A&A, 422, 925Google Scholar