Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88...40v&link_type=abstract
Astronomical Journal, vol. 88, Jan. 1983, p. 40-54.
Astronomy and Astrophysics
Astronomy
29
Galactic Structure, Peculiar Galaxies, Radio Galaxies, Seyfert Galaxies, Heao 2, Lobes, Luminosity, Radio Telescopes, Visible Spectrum, X Ray Sources
Scientific paper
Radio, optical and X-ray observations are presented of the peculiar radio galaxy 3C 433, a Seyfert 2 object with luminosity an order of magnitude greater than that expected from its complex, shell-type morphology. Observations conducted at 6 and 12 cm with the VLA and at 21 cm with the Westerbork telescope show a striking asymmetry between the northern and southern radio emissions, and an overall X-shaped morphology. Optical observations using the Video Camera and High Gain Video Spectrometer on the 4-m telescope and the Intensified Image Dissector Scanner on the 2.1-m telescope at Kitt Peak confirm the identification of the source with a pair of bright galaxies. Observations in the X-ray from the Einstein Observatory IPC reveal an unresolved source at the position of 3C 433, as well as two serendipitous X-ray sources. The observations may be used to explain the overall structure of the source either in terms of tidal torquing or precessing models of double galaxies; however, it is argued that the tidal torquing model requires fewer assumptions to account for the brightness asymmetry.
Balick Bruce
Breugel Wil van
Heckman Tim
Helfand David
Miley George
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