Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.212..799s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 212, Feb. 15, 1985, p. 799-808. Research supported by t
Astronomy and Astrophysics
Astronomy
49
Astronomical Models, Interstellar Matter, Stellar Evolution, Supernova Remnants, Main Sequence Stars, Shock Wave Propagation, Stellar Radiation, Supergiant Stars
Scientific paper
The evolution of a supernova remnant in a cloudy interstellar medium (ISM) is modelled. How the radiation fields and the winds of an early-type progenitor star alter its surroundings is examined, and the effects of the supernova's blast wave as it propagates through the modified ISM is studied. It is found that the stellar winds are unimportant; in contrast, the stellar radiation produces a Stromgren sphere and dispures atomic clouds within the sphere, thereby creating a dense shell around the progenitor star. Molecular clouds within the sphere remain essentially undisturbed. After the supernova explosion, the expanding blast wave generates hard X-rays in the rarefied plasma interior to the dense shell, produces soft X-rays in the dense shell, and drives optically radiating shocks into the molecular clouds. The shell cools down and radiates at optical wavelengths on a time-scale of 10,000 yr.
Dyson John E.
Kahn F. D.
Shull Peter Jr.
West K. A.
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