scholarly journals Distribution of the heavy elements throughout the extended narrow-line region of the Seyfert galaxy NGC 7212

2012 ◽  
Vol 545 ◽  
pp. A72 ◽  
Author(s):  
M. Contini ◽  
V. Cracco ◽  
S. Ciroi ◽  
G. La Mura
Keyword(s):  
Seyfert Galaxy ◽  
Heavy Elements ◽  
Narrow Line ◽  
Line Region ◽  
Narrow Line Region

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.

Subaru High-Dispersion Spectroscopy of the Narrow-Line Region in the Seyfert Galaxy NGC 4151

2003 ◽  
Vol 126 (3) ◽  
pp. 1167-1182 ◽  
Author(s):  
Tohru Nagao ◽  
Takashi Murayama ◽  
Yasuhiro Shioya ◽  
Yoshiaki Taniguchi
Keyword(s):  
Seyfert Galaxy ◽  
High Dispersion ◽  
Narrow Line ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region

scholarly journals Spectrophotometry of Selected AGN Seyfert Galaxy AKN 564

1999 ◽  
Vol 194 ◽  
pp. 87-89
Author(s):  
L.S. Slavcheva ◽  
B.M. Mihov ◽  
G.T. Petrov ◽  
R.S. Bachev
Keyword(s):  
Electron Temperature ◽  
Electron Density ◽  
Seyfert Galaxy ◽  
Emission Lines ◽  
Narrow Line ◽  
Line Region ◽  
The Galaxy ◽  
Narrow Line Region ◽  
Image Position ◽  
Typical Temperature

Akn 564 (α1950 = 22h40m18.3s, δ1950 = 29°27′47″) is a Sy1.5G SBb type galaxy. According to Zwicky (1966) it has a photographic magnitude mp = 14.4 and a redshift of 0.025. The spectra of the galaxy were obtained at the 2.6-m telescope of the Crimean Astrophysical Observatory with a spectrograph having a dispersion of 100 A mm−1. They were processed with the help of SPEC and LONG packages integrated in MIDAS. As a result of the spectrophotometry we obtain the fluxes at λλ 4363, 4959, 5007 A: I(4363), I(4959), I(5007). The spectrum of the galaxy in λλ 4000–7000 is shown in Figure 1. We use the relation of the fluxes of those narrow forbidden emission lines: sensitive at a greater extent to the electron temperature Te than to the electron density ne. The value of R = 74.3 we got, having a typical value of ne = 5×105 cm−3 for the NLR (Narrow Line Region), leads to the estimation of a typical temperature of Te = 104 K.

scholarly journals Mapping the Kinematics of the Narrow-Line Region in the Seyfert Galaxy NGC 4151

2005 ◽  
Vol 130 (3) ◽  
pp. 945-956 ◽  
Author(s):  
V. Das ◽  
D. M. Crenshaw ◽  
J. B. Hutchings ◽  
R. P. Deo ◽  
S. B. Kraemer ◽  
...  
Keyword(s):  
Seyfert Galaxy ◽  
Narrow Line ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region

On the origin of the Z-shaped narrow-line region in the Seyfert galaxy NGC 3516

1993 ◽  
Vol 105 ◽  
pp. 1318 ◽  
Author(s):  
Sylvain Veilleux ◽  
R. B. Tully ◽  
Jonathan Bland-Hawthorn
Keyword(s):  
Seyfert Galaxy ◽  
Narrow Line ◽  
Line Region ◽  
Narrow Line Region

scholarly journals Unusual Radio Structures in Markarian 6

1996 ◽  
Vol 175 ◽  
pp. 177-178
Author(s):  
M.J. Kukula ◽  
A. Pedlar ◽  
S.A. Baum ◽  
A.J. Holloway
Keyword(s):  
Radio Emission ◽  
Radio Telescope ◽  
Angular Resolution ◽  
Seyfert Galaxy ◽  
Narrow Line ◽  
Line Region ◽  
Typical Distances ◽  
Narrow Line Region

Markarian 6, a Seyfert Galaxy of type 1.5, is one of several Seyfert nuclei to be observed with MERLIN at 6 and 18 cm as part of a project to investigate the radio structures of these objects on sub–arcsecond scales (corresponding to scales of a few tens of parsecs at typical distances). The angular resolution of MERLIN at 6 cm is equivalent to that of the HST, making the radio images ideal for comparison with HST images of the optical Narrow–Line Region (NLR). In this paper we briefly discuss the results of our MERLIN observations of Markarian 6, along with a 6–cm Westerbork Synthesis Radio Telescope (WSRT) map of the arcsecond (kpc) scale radio emission. The data is discussed in more detail by Kukula et al. (1996) and Baum et al. (1993).

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