Does the Narrow [Oiii] λ5007 Line Reflect the Stellar Velocity Dispersion in Active Galactic Nuclei?
- 10 March 2003
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 585 (2), 647-652
- https://doi.org/10.1086/346111
Abstract
It has been proposed that the width of the narrow [O III] 5007 emission line can be used as a surrogate for the stellar velocity dispersion in active galaxies. This proposition is tested using the SDSS EDR spectra of 107 low-redshift radio-quiet QSOs and Seyfert 1 galaxies by investigating the correlation between black hole mass, as determined from H-beta FWHM and optical luminosity, and [O III] FWHM. The correlation is real, but the scatter is large. Without additional information or selection criteria, the [O III] width can predict the black hole mass to a factor of 5.Comment: 15 pages including 2 figures, accepted for publication in Ap.Keywords
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