Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...292..447b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 292, May 15, 1985, p. 447-450. Research supported by the Science and Engine
Astronomy and Astrophysics
Astrophysics
8
Elliptical Galaxies, Galactic Structure, Optical Emission Spectroscopy, Plasma Jets, Radio Galaxies, X Ray Sources, Interstellar Gas
Scientific paper
Optical observations of the inner region of the Centaurus A jet are used to show that the optical emission knot found there coincides in length and breadth with the dimensions of X-ray and radio features located at the same site. Although extended regions of ionized gas exist in the inner regions of Cen A and are known to be associated with the elliptical body of the galaxy, it is shown that the optical knot does not form part of this emission. It is instead a compact condensation confined to the region of the jet alone. Evidence is presented for the presence of the extended ionized gaseous component in the vicinity of the jet. A core/halo structure is found in the knot which lends support to a modified accelerated clump model. These results verify the assumption that the optical knots are physically associated with the jet.
Bowyer Stuart
Brodie Joshua
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