Hostname: page-component-7c8c6479df-ws8qp Total loading time: 0 Render date: 2024-03-28T05:37:42.534Z Has data issue: false hasContentIssue false

The spectral decomposition of Active Galactic Nuclei with double-peaked Balmer lines from SDSS

Published online by Cambridge University Press:  01 July 2007

W. Bian*
Affiliation:
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210097, China
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

For a sample of 52 double-peaked broad-lines AGNs from the Sloan Digital Sky Survey (SDSS), we do the spectral decomposition to obtain the host spectrum and the nuclei spectrum from their SDSS spectra, as well as the bulge luminosity (Lbulge), stellar velocity dispersion (σ*). A strong correlation is found between the σ* and the gaseous velocity dispersion in narrow line regions. With the Mbh − σ* relation, we estimate the black hole masses, range from 1.0 × 107 to 6 × 108 M, and the Eddington ratio from about 0.01 to about 1. It is consistent with the result from MbhLbulge relation. However, it is not consistent with the mass from the Hβ FWHM. It seems that the empirical size-luminosity relation for broad line regions dose not hold for double-peaked AGNs, otherwise the calibration factor is as small as 0.185, suggesting the non-virial dynamics of broad line regions.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

Bian, W., Chen, Y., Qu, Q., & Wang, J. 2007, ApJ, in press, astro-ph/0706.2473Google Scholar
Cid Fernandes, R., Sodre, L., Schmitt, H. R., & Leao, J. R. S. 2001, MNRAS 325, 60CrossRefGoogle Scholar
Eracleous, M. & Halpern, J. P. 2003, ApJ 599, 886CrossRefGoogle Scholar
Greene, J. E. & Ho, L. C., 2006, ApJ, 641, L21CrossRefGoogle Scholar
Magorrian, J., et al. 1998, AJ, 115, 2285CrossRefGoogle Scholar
Nelson, C. H. & Whittle, M., 1996, ApJ, 465, 96CrossRefGoogle Scholar
Richards, G. T., et al. 2006, ApJS, 166, 470CrossRefGoogle Scholar
Strateva, I. V., et al. 2003, AJ, 126, 1720CrossRefGoogle Scholar
Tremaine, S., et al. 2002, ApJ, 574, 740CrossRefGoogle Scholar