Exploratory observations of gas near the nuclei of Seyfert galaxies

Journal Article · Thu Mar 01 04:00:00 EST 1979 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/112422· OSTI ID:6271450

Balick, B; Heckman, T

The extranuclear regions of NGC 1068, 3C 120, NGC 1275, Mrk 1, and Mrk 3 have been examined spectrophotometrically. In every case gas approx.1 kpc or more from the nucleus exhibits certain spectroscopic similarities to the nucleus in terms of velocities and relative line intensities. These results strongly suggest that some sort of communication exists between the nucleus and the gas outside. Each galaxy has highly individual characteristics in many respects. NGC 1068 has an elliptical region extending > or approx. =600 kpc which seems to be ionized much like the nucleus. 3C 120 has at least two regions lying more than 5 kpc from the nucleus whose ionization appears to be similar to that in the nucleus but whose internal dynamics are distinctly different. Mrk 1, on the other hand, shows only weak off-nuclear emission lines whose widths are about the same as that of the nucleus itself.

• Research Organization: Astronomy Department, University of Washington, Seattle, Washington 98195
• OSTI ID: 6271450
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 84:3; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC GASES
COSMIC RADIO SOURCES
DATA
DATA FORMS
EMISSION SPECTRA
EXPERIMENTAL DATA
FLUIDS
GALAXIES
GASES
H1 REGIONS
H2 REGIONS
INFORMATION
INTERSTELLAR SPACE
IONIZATION
ISOLATED VALUES
NUMERICAL DATA
RED SHIFT
SEYFERT GALAXIES
SPACE
SPECTRA
SPECTROPHOTOMETRY