The Narrow‐Line Region of Seyfert Galaxies: Narrow‐Line Seyfert 1 Galaxies versus Broad‐Line Seyfert 1 Galaxies

2001 ◽  
Vol 546 (2) ◽  
pp. 744-758 ◽  
Author(s):  
Tohru Nagao ◽  
Takashi Murayama ◽  
Yoshiaki Taniguchi
Keyword(s):  
Seyfert Galaxies ◽  
Broad Line ◽  
Narrow Line ◽  
Line Region ◽  
Narrow Line Region

scholarly journals Near-IR Spectroscopy of High-z QSOs: Relating the Broad and Narrow-Line Regions

1997 ◽  
Vol 159 ◽  
pp. 258-259
Author(s):  
M.S. Brotherton
Keyword(s):  
Simple Model ◽  
Broad Line ◽  
Narrow Line ◽  
Strong Correlations ◽  
Broad Line Region ◽  
Near Ir ◽  
Line Region ◽  
Derived Properties ◽  
Narrow Line Region ◽  
Line Widths

Recent investigations of the broad UV lines in luminous QSOs identified strong correlations involving emission-line widths, shifts, equivalent widths, and ratios (Francis et al. 1992; Wills et al. 1993; Brotherton et al. 1994a, b). A simple model developed to explain these trends approximates UV broad lines as emission from two regions, an intermediate-line region (ILR), and a very broad-line region (VBLR), together comprising the traditional broad-line region (BLR). The observed and derived properties for the ILR and VBLR are summarized in Table 1, along with typical values for the narrow-line region (NLR).

scholarly journals Origin of the Gas in the Extended Narrow-Line Region of Nearby Seyfert Galaxies: The Case of Mrk 6

2009 ◽  
Vol 5 (S267) ◽  
pp. 327-327
Author(s):  
V. Cracco ◽  
S. Ciroi ◽  
F. Di Mille ◽  
L. Vaona ◽  
P. Rafanelli ◽  
...  
Keyword(s):  
Seyfert Galaxy ◽  
Seyfert Galaxies ◽  
Special Astrophysical Observatory ◽  
Narrow Line ◽  
Physical Processes ◽  
Ionized Gas ◽  
Preliminary Results ◽  
Line Region ◽  
Narrow Line Region ◽  
Open Question

AbstractIonization cones are one of the most important pieces of evidence supporting the AGN unified model (Antonucci & Miller 1985; Urry & Padovani 1995). Until now, the physical processes at work in the cones are not completely understood. A still open question concerns the origin of the gas. To study the origin of the ionized gas, we first selected a sample of nearby (z<0.03) Seyfert galaxies showing extended [O iii] λ5007 emission. We then observed these galaxies with the MultiPupil Fiber Spectrograph (MPFS) at the 6-m telescope of the Special Astrophysical Observatory (Russia). Here we present very preliminary results on the properties of the narrow-line region (NLR) of the intermediate Seyfert galaxy Mrk 6.

scholarly journals Dust Lanes Causing Structure in the Extended Narrow‐Line Region of Early‐Type Seyfert Galaxies

1999 ◽  
Vol 525 (2) ◽  
pp. 685-690 ◽  
Author(s):  
A. C. Quillen ◽  
A. Alonso‐Herrero ◽  
M. J. Rieke ◽  
Colleen McDonald ◽  
Heino Falcke ◽  
...  
Keyword(s):  
Seyfert Galaxies ◽  
Narrow Line ◽  
Early Type ◽  
Line Region ◽  
Narrow Line Region
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