Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sciam.241..138h&link_type=abstract
Scientific American, vol. 241, Aug. 1979, p. 138-142, 144, 145.
Astronomy and Astrophysics
Astronomy
2
Star Formation, Stellar Mass Accretion, Supernova Remnants, Supernovae, Doppler Effect, Galactic Rotation, Hydrogen Clouds, Protostars, Spiral Galaxies, Stellar Envelopes, Stellar Gravitation, Stellar Mass
Scientific paper
A hypothesis that the explosive collapse of a massive star results in the appearance of other stars is presented. It is proposed that supernova-induced star formation starts when the star collapses under the gravitational attraction of its constituent particles, becomes unstable, and blows off its outer layers in a supernova explosion. The remnants sweep up an expanding shell of interstellar matter, and the shock wave from the shell compresses clouds of gas and dust to a density high enough for gravity to pull the material into stars. The evidence for this theory is the identification of expanding shells of gas surrounding the remnants of ancient supernovas, molecular-line and infrared astronomy observations of the compression and heating of the interstellar medium during the early stages of star formation, and the discovery of anomalous concentrations of certain isotopes in meteorites.
Assousa George E.
Herbst William
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