Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...203..233s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 203, no. 2, Sept. 1988, p. 233-236.
Astronomy and Astrophysics
Astrophysics
39
Active Galactic Nuclei, Ionized Gases, Seyfert Galaxies, Ultraviolet Radiation, Emission Spectra, Galactic Rotation, H Alpha Line, H Beta Line, Hot Stars, Shock Heating
Scientific paper
High-resolution spectra are presented from the jetlike string of ionized gas extending to the southwest of the narrow-line region (NLR) of NGC 4151. The observed velocities and the spatial extent of the emission lines strongly suggest that the main component of the gas follows the galactic rotation pattern and is hence located in the galactic plane. Ionization by a power-law continuum as modeled by Ulrich and Pequignot (1980) is in agreement with line ratios from forbidden O III, S II, and N II relative to H-beta, while shock heating or ionization by in situ hot stars appear to be ruled out. It is shown that the shape and excitation of the jet can be consistently explained by a 30-deg-wide cone of nuclear UV radiation emerging through a hole in the elsewhere opaque NLR. A second less conspicuous velocity component of the string reveals the presence of remarkable noncircular motions outside the NLR.
No associations
LandOfFree
Jet-like morphology of ionized gas due to a UV-radiation cone does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Jet-like morphology of ionized gas due to a UV-radiation cone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jet-like morphology of ionized gas due to a UV-radiation cone will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-908323