The FeII Optical Emission in AGN

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dc.creatorBongardo, C.
dc.creatorZamanov, R.
dc.creatorMarziani, P.
dc.creatorCalvani, M.
dc.creatorSulentic, J. W.
dc.date2002-11-19
dc.date2002-11-27
dc.date.accessioned2026-07-07T02:06:26Z
dc.date.available2026-07-07T02:06:26Z
dc.descriptionWe investigated the optical FeII emission in a sample of about 215 low-redshift AGN (quasars and luminous Seyfert 1 galaxies). We find that a scaled and broadened FeII template based on the I Zw 1 spectrum can satisfactorily model the FeII emission in almost all sources in our sample. We confirm that FWHM H$β$ and FeII$λ$4570 are strongly correlated. The correlation is different for sources with FWHM(H$β$) greater than or less than $\sim$4000 km s$^{-1}$. Sources with FWHM H$β$$\leq$ 4000 km s$^{-1}$ (Population A) show no difference between FWHM H$β$ and FeII while sources with FWHM(H$β$) $\geq$ 4000 km s$^{-1}$ (Population B) show FWHM FeII that is systematically smaller than FWHM H$β$. This may be telling us that FeII emission in Pop. B sources comes from only the outermost part of the H$β$\ emitting region where the degree of ionization is lowest.
dc.description4 pages, 4 figures. Poster presented at "AGN5: Inflows, Outflows and Reprocessing around Black Holes". Como, 11-14 June 2002. Also available at: www.unico.it/ilaria/AGN5/proceedings.html
dc.identifierhttps://arxiv.org/abs/astro-ph/0211418
dc.identifierhttp://arxiv.org/abs/astro-ph/0211418
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5372
dc.subjectAstrophysics
dc.titleThe FeII Optical Emission in AGN
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