Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...280..532h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 280, May 15, 1984, p. 532-541.
Astronomy and Astrophysics
Astrophysics
19
Galactic Clusters, Radio Galaxies, X Ray Sources, Astronomical Maps, Galactic Structure, Visible Spectrum
Scientific paper
New radio, optical and X-ray observations of a galaxy with one-sided radio structure located 2.2 Mpc from the center of Abell 754 are reported. From the optical spectra, the cluster membership of the galaxy is confirmed and it is noted that no emission lines are found. An X-ray source with Lx of approximately 2 x 10 to the 43rd erg/s (0.5-3.0 keV) is located in the nucleus (diameter, less than 4 kpc). There is also a weak X-ray extension to the southeast. The central radio source has a luminosity of about 10 to the 41st ergs/s with a diameter of less than 1.5 kpc. A straight radio feature of low surface brightness (a 'jet' or 'tail') extends 170 kpc to the southeast, ending in a diffuse lobe which is oriented in PA of about 45 deg. Consideration is given to pressure balance between the various radio components and the cluster gas, and also to four processes for the origin of the nuclear X-ray emission. Alternative interpretations of the data are given for a classical tailed radio galaxy and for a truly one-sided radio source.
Costain Carman H.
Dewdney Peter E.
Harris Daniel E.
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