Neutral hydrogen in supernova remnants - IC 443 and the Cygnus Loop

Details Neutral hydrogen in supernova remnants - IC 443 and the Cygnus Loop Neutral hydrogen in supernova remnants - IC 443 and the Cygnus Loop

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230..404g&link_type=abstract

Astrophysical Journal, Part 1, vol. 230, June 1, 1979, p. 404-411, 413, 414.

Astronomy and Astrophysics

Astronomy

52

Hydrogen Clouds, Supernova Remnants, Astronomical Models, Centimeter Waves, Cygnus Constellation, Radio Sources (Astronomy), X Ray Astronomy

Scientific paper

High-resolution and high-sensitivity searches for neutral hydrogen associated with the supernova remnants IC 443 and the Cygnus Loop have not revealed the presence of the high-velocity gas suggested by McKee, Cowie, and Ostriker (1978). In the case of IC 443, however, a prominent H I shell lies within the optical filaments of the remnant. It may be traced up to velocities of the order of -110 km/s and is mainly found to be approaching. The total neutral hydrogen mass associated with the shell is in excess of 700 solar masses for a distance to IC 443 of 1.5 kpc. A model that combines the radio, optical, and X-ray observations places IC 443 within a region of enhanced interstellar density.

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