The structure and ionization of the extended emission-line filaments surrounding the QSO MR 2251-178

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168847· OSTI ID:6934252

Macchetto, F; Colina, L; Golombek, D; Perryman, M A.C.; Di Serego Alighieri, S ^[1]

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1. Space Telescope Science Institute, Baltimore, MD (USA) ESA, Astrophysics Div., Noordwijk (Netherlands) ESA, Space Telescope European Coordinating Facility, Garching (Germany, F.R.)

This paper presents new VLA radio maps, at 6 cm and 20 cm, of the QSO MR 2251-178, together with deep high-spatial-resolution images in the O II forbidden 3727-A line in the O III forbidden 5007-A line, and H-alpha emission lines, showing the presence of extended emission-line filaments surrounding the MR 2251-178. The morphology of the circumnuclear emission-line regions and an extended system of filaments in different ionization states are shown. The physical characteristics, such as luminosities, densities, mass, and ionization parameters of different filaments are derived. 48 refs.

• OSTI ID: 6934252
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 356; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BALMER LINES
COSMIC RADIO SOURCES
DENSITY
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
FILAMENTS
FORBIDDEN TRANSITIONS
GALAXY NUCLEI
IONIZATION
MAPS
MORPHOLOGY
PHYSICAL PROPERTIES
PLASMA JETS
QUASARS
RADIATIONS
RADIOWAVE RADIATION
SPECTRA