Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97.1721c&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 97, June 1989, p. 1721-1726.
Astronomy and Astrophysics
Astronomy
2
Extragalactic Radio Sources, Galactic Radio Waves, Galactic Structure, Supernova Remnants, Astronomical Spectroscopy, Brightness Temperature, High Resolution, Radio Galaxies
Scientific paper
The radio source CTB 63 is extended and diffuse and has been regarded as a possible galactic supernova remnant. New observations at 408 and 1420 MHz, made with the DRAO synthesis telescope, delineate the boundary and suggest that it is a galactic spur rather than a discrete supernova remnant. The spur has a length of about 6 deg and at one extremity merges with the diffuse galactic disk emission; it is clearly nonthermal. Small-diameter sources in the region, most of which are extragalactic background sources, are also cataloged.
Caswell J. L.
Landecker Thomas L.
Roger Robert S.
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