Observations of the old supernova remnant S 147 at 11.1 and 18.2 CM wavelengths

Details Observations of the old supernova remnant S 147 at 11.1 and 18.2 CM wavelengths Observations of the old supernova remnant S 147 at 11.1 and 18.2 CM wavelengths

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....92..225k&link_type=abstract

Astronomy and Astrophysics, vol. 92, no. 1-2, Dec. 1980, p. 225-229.

Astronomy and Astrophysics

Astrophysics

25

Centimeter Waves, Galactic Structure, Radio Observation, Supernova Remnants, Error Analysis, Galactic Evolution, High Resolution, Radio Spectra, Visible Spectrum

Scientific paper

New high resolution and high sensitivity radio observations of the old galactic supernova remnant S 147, made at wavelengths of 11.1 and 18.2 cm, are reported. The data reveal the presence of a well developed radio shell. The integrated flux density spectrum shows a distinct break at 1 GHz, attributed to enhanced volume emissivity of the swept-up interstellar material. The age of S 147 is likely to be about 100,000 yr, making it one of the oldest optically visible supernova remnants in the Galaxy. Derived physical parameters, based on the new data, are also reported.

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