Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208..589d&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, June 1, 1984, p. 589-600.
Astronomy and Astrophysics
Astronomy
44
Interstellar Gas, Ionized Gases, Optical Measurement, Radio Galaxies, Astronomical Spectroscopy, Elliptical Galaxies, Galactic Nuclei, Galactic Rotation, Gas Dynamics, Velocity Distribution
Scientific paper
An optical spectroscopic study of the excitation and dynamics of the ionized gas associated with the radio galaxy PKS 0349-27 is presented. The spectra of ionized gas away from the nucleus, while consistent in some ways with a photo-ionization mechanism, also give rise to difficulties in this interpretation. It may be that energy in the radio jet is responsible for some of the excitation and ionization, especially in the condensation or 'jet' to the north-east which corresponds in position to the alignment of the axis of the double radio structure. The gas appears to be rotating and expanding in the form of one or more rings. Possible mechanisms for creating the large extent of the gas and its relatively ordered motion are discussed. These include tidal interaction with companion galaxies, and mergers.
Bland Jason
Boksenberg Alec
Danziger Ivan John
Fosbury Robert A. E.
Goss William Miller
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