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Record 37 of 384
Kinematics and ionization of extended ionized gas in active galaxies. I - The X-ray luminous galaxies NGC 2110, NGC 5506, and MCG -5-23-16
External Online Source: doi:10.1086/163103
Author and Affiliation:
Wilson, A. S.(Maryland, University, College Park, MD)
Baldwin, J. A.(Observatorio Interamericano de Cerro Tololo, La Serena, Chile)
Ulvestad, J. S.(National Radio Astronomy Observatory, Charlottesville, VA, United States)
Abstract: Direct CCD imaging and long-slit Vidicon spectroscopy have been used to map the emission-line ratios, profiles, and velocity fields over the extended narrow-line regions in three nearby Seyfert galaxies, NGC 2110, NGC 5506, and MCG -5-23-16. The gas in the letter is spatially unresolved. Similarities between the other two nebulae include the excitation mechanism (photoionization by a central nonthermal source) and the overall profiles of the very broad emission lines close to the nucleus. The nebulae are, however, quite different in their global kinematic behavior. In NGC 2110, the gas appears to lie in a disk or flattened spheroid and to be in ordered rotation, with a classical rotation curve, about an axis parallel to the minor axis of the stellar isophotes. The velocity field of NGC 5506 is quite irregular, but a component of rotation in the plane of the galaxy seems to exist.
Publication Date: Apr 15, 1985
Document ID:
19850052475
(Acquired Nov 28, 1995)
Accession Number: 85A34626
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 291; 627-654
Publisher Information: United States
Contract/Grant/Task Num: NSF AST-82-16553; NSF AST-78-27879; NAG8-429
Financial Sponsor: NASA; United States
Organization Source: Maryland Univ.; College Park, MD, United States
Cerro Tololo Inter-American Observatory; La Serena, Chile
National Radio Astronomy Observatory; Charlottesville, VA, United States
Description: 33p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ACTIVE GALAXIES; GAS IONIZATION; INTERSTELLAR GAS; SEYFERT GALAXIES; X RAY SOURCES; ASTRONOMICAL MAPS; EMISSION SPECTRA; GALACTIC STRUCTURE; KINEMATICS; LINE SPECTRA; OXYGEN SPECTRA
Imprint And Other Notes: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 291, April 15, 1985, p. 627-654.
Availability Source: Other Sources
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