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imaging spectrophotometry of ionized gas in ngc 1068. i - kinematics of the narrow-line regionThe kinematics of collisionally excited forbidden N II 6548, 6583 across the inner 1 arcmin diameter of the nearby Seyfert galaxy NGC 1068 is mapped using an imaging Fabry-Perot interferometer and low-noise CCD. The stack of monochromatic images, which spatially resolved the high-velocity gas, was analyzed for kinematic and photometric content. Profiles agree well with previous long-slit work, and their complete spatial coverage makes it possible to constrain the gas volume distribution. It is found that the narrow-line region is distributed in a thick center-darkened, line-emitting cylinder that envelopes the collimated radio jet. Three distinct kinematic subsystems, of which the cylinder is composed, are discussed in detail. Detailed behavior of the emission-line profiles, at the few points in the NE quadrant with simple kinematics, argues that the ionized gas develops a significant component of motion perpendicular to the jet axis.
Document ID
19900048254
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cecil, Gerald
(Institute for Advanced Study Princeton, NJ, United States)
Bland, Jonathan
(Institute for Advanced Study Princeton, NJ, United States)
Tully, R. Brent
(Hawaii, University Honolulu, United States)
Date Acquired
August 14, 2013
Publication Date
May 20, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 355
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NSF AST-86-15974
CONTRACT_GRANT: NAS8-32902
Distribution Limits
Public
Copyright
Other