Kinematics and ionization of extended gas in active galaxies. V - The Seyfert galaxy NGC 5548

Kinematics and ionization of extended gas in active galaxies. V - The Seyfert galaxy NGC 5548

It is found that NGC 5548 contains a spatially extended high-excitation narrow-line region with line widths ranging between 500 and 100 km/s (FWHM). This nebulosity is elongated along the axis of the triple radio source. The peak of optical continuum light (nucleus) coincides with the peak of the fo...

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Veröffentlicht in:Astrophys. J.; (United States) 1989-04, Vol.339 (2), p.729-741
Hauptverfasser: Wilson, A. S., Wu, Xuening, Heckman, T. M., Baldwin, J. A., Balick, B.
Format: Artikel
Sprache:eng
Schlagworte:
640105 - Astrophysics & Cosmology- Galaxies
Astronomy
Astrophysics
BALMER LINES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC GASES
COSMIC RADIO SOURCES
DISTRIBUTION
Earth, ocean, space
Exact sciences and technology
FLUIDS
GALAXIES
GALAXY NUCLEI
GASES
H2 REGIONS
IONIZATION
LINE WIDTHS
PARTICLE KINEMATICS
Quasars. Active or peculiar galaxies, objects, and systems
SEYFERT GALAXIES
SPATIAL DISTRIBUTION
SPECTROSCOPY
Stellar systems. Galactic and extragalactic objects and systems. The universe
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Beschreibung
Zusammenfassung:It is found that NGC 5548 contains a spatially extended high-excitation narrow-line region with line widths ranging between 500 and 100 km/s (FWHM). This nebulosity is elongated along the axis of the triple radio source. The peak of optical continuum light (nucleus) coincides with the peak of the forbidden O III 5007 A distribution.
ISSN:0004-637X
1538-4357
DOI:10.1086/167331