Erratum: “Is There a Metallicity-Luminosity Relationship in Active Galactic Nuclei? The Case of Narrow-Line Seyfert 1 Galaxies” ([URL ADDRESS="/cgi-bin/resolve?2002ApJ...567L..19S" STATUS="OKAY"]A[CLC]p[/CLC]J, 567, L19 [2002][/URL])
نویسندگان
چکیده
منابع مشابه
Black hole mass and velocity dispersion of narrow line region in active galactic nuclei and narrow line Seyfert 1 galaxies
Controversy regarding whether Narrow Line Seyfert 1 galaxies (NLS1s) follow the same black hole — galactic bulge relation as normal galaxies has been raised by Mathur et al. (2001) and Ferrarese et al. (2001). In this paper, the correlation between the black hole mass and the velocity dispersion of the narrow line region, indicated by the [OIII] line width for a heterogeneous sample of NLS1s, i...
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We present new low-resolution Spitzer mid-infrared spectroscopy of a sample of 20 ROSATselected local narrow-line Seyfert 1 galaxies (NLS1s). We detect strong active galactic nucleus (AGN) continuum in all and clear polycyclic aromatic hydrocarbon (PAH) emission in 70 per cent of the sources. The 6.2μm PAH luminosity spans three orders of magnitude, from ∼1039 to ∼1042 erg s−1, providing strong...
متن کاملThe Unified Model of Active Galactic Nuclei: I. Non-hidden Broad Line Region Seyfert 2 and Narrow Line Seyfert 1 Galaxies
The unified model of Seyfert galaxies suggests that there are hidden broad-line regions (HBLRs) in Seyfert 2 galaxies (S2s). However, there is increasing evidence for the appearance of a subclass of S2s lacking of HBLR (non-HBLR S2s). An interesting issue arises as to relations of non-HBLR S2s with other types of Seyfert galaxies and whether or not they can be included in the unified model. We ...
متن کاملGas Metallicity in the Narrow-Line Regions of High-Redshift Active Galactic Nuclei
We analyze optical (UV rest-frame) spectra of X-ray selected narrow-line QSOs at redshift 1.5 <∼ z <∼ 3.7 found in the Chandra Deep Field South and of narrow-line radio galaxies at redshift 1.2 <∼ z <∼ 3.8 to investigate the gas metallicity of the narrow-line regions and their evolution in this redshift range. Such spectra are also compared with UV spectra of local Seyfert 2 galaxies. The obser...
متن کاملNarrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies
Narrow Line Seyfert 1 galaxies (NLS1s) are intriguing due to their continuum as well as emission line properties. The observed peculiar properties of the NLS1s are believed to be due to accretion rate close to Eddington limit. As a consequence, for a given luminosity, NLS1s have smaller black hole (BH) masses compared to normal Seyfert galaxies. Here we argue that NLS1s might be Seyfert galaxie...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2002
ISSN: 0004-637X,1538-4357
DOI: 10.1086/340459