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Supernovae in Flocculent and Grand Design Galaxies

Published online by Cambridge University Press:  30 March 2016

Marshall L. McCall  and
Fred H. Schmidt
Marshall L. McCall
Affiliation:
David Dunlap Observatory and University of Toronto
Fred H. Schmidt
Affiliation:
David Dunlap Observatory and University of Toronto

Abstract

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The arm structure of supernova host galaxies has been studied in order to ascertain whether or not spiral density waves have an impact on supernovae frequencies. The ensembles of Type I and Type II supernova hosts were found to contain identical fractions of grand design spirals consistent with the representations in control samples chosen without regard to supernovae production. The results suggest that a density wave does not greatly enhance the massive star formation rate per unit luminosity of a galaxy. Instead, star formation in most galaxies may be dominated by stochastic processes.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 7: Highlights of Astronomy. As presented at the XIXth General Assembly of the IAU, 1985 , 1986 , pp. 585 - 588
Copyright
Copyright © Reidel 1986

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