scholarly journals Spatial Resolution of High‐Velocity Filaments in the Narrow‐Line Region of NGC 1068: Associated Absorbers Caught in Emission?

2002 ◽  
Vol 568 (2) ◽  
pp. 627-638 ◽  
Author(s):  
Gerald Cecil ◽  
Michael A. Dopita ◽  
Brent Groves ◽  
Andrew S. Wilson ◽  
Pierre Ferruit ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Velocity ◽  
Narrow Line ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

The Ionization Structure of the Narrow‐Line Region of NGC 1068 and Its Relationship to the Extended Radio Emission

1997 ◽  
Vol 487 (2) ◽  
pp. 560-567 ◽  
Author(s):  
A. Capetti ◽  
D. J. Axon ◽  
F. D. Macchetto
Keyword(s):  
Radio Emission ◽  
Narrow Line ◽  
Ionization Structure ◽  
Line Region ◽  
Extended Radio ◽  
Ngc 1068 ◽  
Narrow Line Region

High-Velocity Line Emission in the Narrow-Line Region of NGC 4151

1999 ◽  
Vol 118 (5) ◽  
pp. 2101-2107 ◽  
Author(s):  
J. B. Hutchings ◽  
D. M. Crenshaw ◽  
A. C. Danks ◽  
T. R. Gull ◽  
S. B. Kraemer ◽  
...  
Keyword(s):  
High Velocity ◽  
Line Emission ◽  
Narrow Line ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region

Subarcsecond Mid-Infrared Imaging of Warm Dust in the Narrow-Line Region of NGC 1068

1993 ◽  
Vol 419 ◽  
pp. 136 ◽  
Author(s):  
Murray Cameron ◽  
John W. V. Storey ◽  
Valentin Rotaciuc ◽  
Reinhard Genzel ◽  
Laurent Verstraete ◽  
...  
Keyword(s):  
Infrared Imaging ◽  
Narrow Line ◽  
Mid Infrared ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

scholarly journals Jet-Driven Motions in the Narrow-Line Region of NGC 1068

1998 ◽  
Vol 496 (2) ◽  
pp. L75-L78 ◽  
Author(s):  
D. J. Axon ◽  
A. Marconi ◽  
A. Capetti ◽  
F. D. Macchetto ◽  
E. Schreier ◽  
...  
Keyword(s):  
Narrow Line ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

Resolved Spectroscopy of the Narrow‐Line Region in NGC 1068. III. Physical Conditions in the Emission‐Line Gas

2000 ◽  
Vol 544 (2) ◽  
pp. 763-779 ◽  
Author(s):  
Steven B. Kraemer ◽  
D. Michael Crenshaw
Keyword(s):  
Emission Line ◽  
Narrow Line ◽  
Physical Conditions ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

scholarly journals Resolved Spectroscopy of the Narrow‐Line Region in NGC 1068. I. The Nature of the Continuum Emission

2000 ◽  
Vol 532 (1) ◽  
pp. 247-255 ◽  
Author(s):  
D. Michael Crenshaw ◽  
Steven B. Kraemer
Keyword(s):  
Continuum Emission ◽  
Narrow Line ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region ◽  
The Continuum

scholarly journals Resolved Spectroscopy of the Narrow-Line Region in NGC 1068: Kinematics of the Ionized Gas

2000 ◽  
Vol 532 (2) ◽  
pp. L101-L104 ◽  
Author(s):  
D. Michael Crenshaw ◽  
Steven B. Kraemer
Keyword(s):  
Narrow Line ◽  
Ionized Gas ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

HST/FOC imaging of the narrow-line region of NGC 1068

1994 ◽  
Vol 435 ◽  
pp. L15 ◽  
Author(s):  
F. Macchetto ◽  
A. Capetti ◽  
W. B. Sparks ◽  
D. J. Axon ◽  
A. Boksenberg
Keyword(s):  
Narrow Line ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

scholarly journals Gravitation and Jet Induced Velocities in the Narrow Line Region of Active Galaxies

1989 ◽  
Vol 8 ◽  
pp. 423-427 ◽  
Author(s):  
Mark Whittle
Keyword(s):  
Active Galaxies ◽  
Basic Question ◽  
Radio Sources ◽  
Narrow Line ◽  
Radio Luminosity ◽  
Natural Explanation ◽  
Radio Jets ◽  
Line Region ◽  
Ngc 1068 ◽  
Narrow Line Region

The basic question I want to address is : “What mechanism or mechanisms accelerate the gas in the narrow line region of active galaxies, yielding the observed profile shapes.” At the present time there is no generally accepted answer to this question. Part of the problem dates back to the first few Seyferts that were discovered which, in retrospect, seem to have had anomalously broad lines. For example NGC 1068, MKN 3, and MKN 78 have [OIII] λ 5007 FWHM ~ 1000 km s-1, which is clearly greater than anything associated with a normal galaxy velocity fields. An obvious implication was that these high velocities were in some way related to the activity. This view was reinforced by the discovery of a correlation between [OIII] FWHM and non-thermal radio luminosity (Wilson and Willis 1981). When many radio sources were found to have linear double or triple morphology (e.g. Ulvestad and Wilson 1984a,b), a natural explanation seemed to be outflowing radio jets which stir up the narrow line region and thus generate the correlation between line width and radio luminosity.

Sign in / Sign up

Export Citation Format

Share Document