Very extended ionized gas in radio galaxies. I - A radio, optical and ultraviolet study of PKS 2158-380

Details Very extended ionized gas in radio galaxies. I - A radio, optical and ultraviolet study of PKS 2158-380 Very extended ionized gas in radio galaxies. I - A radio, optical and ultraviolet study of PKS 2158-380

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.201..991f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 201, Dec. 1982, p. 991-1008.

Astronomy and Astrophysics

Astronomy

52

Ionized Gases, Radio Astronomy, Radio Galaxies, Spatial Distribution, Ultraviolet Astronomy, Visible Spectrum, Astronomical Spectroscopy, Emission Spectra, Galactic Structure, Iue, Line Spectra, Oxygen Ions, Oxygen Spectra, Photoionization, Point Sources, Velocity Distribution

Scientific paper

IUE observations of PKS 2158-380 show gas in a high state of ionization extending out to a radius of 15 kpc, with a spectrum which is inconsistent with local photoionization by hot stars, and a UV point source at the nucleus which can be fitted by a power law with a spectral index of -1.4. If the gas is distributed within the galaxy in such a way as to cover a large fraction of the sky at large distances from the nucleus, the UV source is sufficiently luminous to photoionize the entire emission line region. It is suggested that this sky coverage can be obtained if the gas is in the form of a severely warped disk, which may have resulted from the capture and disruption of a small, gas-rich galaxy's elliptical. The capture of gas by an elliptical galaxy, and the subsequent dissipative evolution, may be responsible for the nuclear activity observed in some radio galaxies.

Affiliated with

Also associated with

No associations

Rating

Very extended ionized gas in radio galaxies. I - A radio, optical and ultraviolet study of PKS 2158-380 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 Very extended ionized gas in radio galaxies. I - A radio, optical and ultraviolet study of PKS 2158-380, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very extended ionized gas in radio galaxies. I - A radio, optical and ultraviolet study of PKS 2158-380 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-930793