The optical structure of the radio galaxy Hercules A

Details The optical structure of the radio galaxy Hercules A The optical structure of the radio galaxy Hercules A

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..379s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 686, p. 379-382.

Mathematics

Logic

14

Galactic Nuclei, Radio Galaxies, Galactic Structure, Image Processing

Scientific paper

We present broadband images of the optical counterpart to the very strong radio source Hercules A. Through morphological analysis we have been able to identify this source as a cD galaxy with a double nucleus with a nuclear separation of approximately 4 arcsec. We also find a low-luminosity tail coming from the NW end of the cD. There is a slight knot near the center of this extension which may imply that this tail may be a companion galaxy, or perhaps that the knot is just a very faint foreground star. We discuss the morphological and other properties of this radio galaxy.

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