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Cosmic rays from supernovae and comments on the Vela X pre-supernovaA possible history of the production of elements in the galaxy is presented, based on assumptions about the end points of stellar evolution and of the general evolution of the galaxy. A wide range of quantities involving the relative abundances of nucleosynthesis products observed in the solar system, and various galactic quantities such as the current rate of supernova production and the present gas content of the galaxy, were considered. These assumptions were utilized in a computer program in which the gas content of the galaxy is gradually turned into stars. The stars are continually enriched in the products of nucleosynthesis as they approach the ends of their evolutionary lifetimes. It is suggested that supernova explosions are associated with the mass range of about 4-8 solar masses. Possible theories on the type of stellar explosive event represented by the Vela supernova are discussed.
Document ID
19720004111
Document Type
Conference Paper
Authors
Cameron, A. G. W. (Yeshiva Univ. New York, NY, United States)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: NASA. Goddard Space Flight Center The Gum Nebula and Related Probl.
Subject Category
SPACE SCIENCES
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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