Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275...61v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 1, 1983, p. 61-68. Research supported by the University of Maryla
Astronomy and Astrophysics
Astronomy
11
Astronomical Spectroscopy, Galactic Nuclei, Galactic Structure, Plasma Jets, Radio Galaxies, Spiral Galaxies, Absorption Spectra, Centimeter Waves, Continuous Spectra, H Lines, Red Shift
Scientific paper
The nature of the 'optical jet' in the giant radio galaxy DA 240 is clarified through radio and optical observations. No continuum radio emission were detected from the jet, and optical (blue) images suggest that the jet, or 'low velocity system' (LVS), might be a spiral galaxy. Evidence for this interpretation is provided by the recent discovery that an adjacent galaxy has nearly the same redshift as the LVS, suggesting that they are both members of a small foreground group at several thousand km/sec lower redshift. The similarity of the LVS in DA 240 to the high velocity system in NGC 1275 is strengthened, in the sense that strong circumstantial evidence is found that both are foreground spiral galaxies rather than jets indicative of explosive outflow.
Balick Bruce
Breugel Wil van
Bridle Alan
Butcher Harvey
Heckman Tim
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