A large radio galaxy behind the supernova remnant HB9

Details A large radio galaxy behind the supernova remnant HB9 A large radio galaxy behind the supernova remnant HB9

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102.2047s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, Dec. 1991, p. 2047, 2048.

Astronomy and Astrophysics

Astronomy

3

Radio Galaxies, Supernova Remnants, Extragalactic Radio Sources, Galactic Clusters, X Ray Sources

Scientific paper

HB9 is a 2-deg-diameter radio shell with X-ray emission from a broad diffuse band in the interior. Within this band, a weak unresolved X-ray source coincides with the radio source 4C 46.09. To identify this source CCD I and V band pictures and a spectrum were obtained. The source is a galaxy at redshift 0.195, and is therefore only accidentally aligned with HB9. The galaxy is large and bright and has the characteristics of a cD galaxy, often found at the center of clusters. If the galaxy is centered in a cluster, some of the surrounding diffuse X-rays may also be extragalactic.

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