On the presumed presupernova stage for type II supernovae

Details On the presumed presupernova stage for type II supernovae On the presumed presupernova stage for type II supernovae

Jan 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969cokon..65...41b&link_type=abstract

Communications of the Konkoly Observatory, No. 65 (Vol. VI, 1), p. 41-50 (1969)

Physics

Scientific paper

The physical conditions of stars in presupernova type II stage when the outburst is expected to be due to the Fe-He transition occuring in its core are reviewed. The arguments showing that star must preserve a large envelope in this stage and therefore appear as a red supergiant are stressed, and a lower mass limit of about 10~14 M_sun for stars undergoing the outburst is confirmed on the basis of the more recent evaluations. Finally, the possibility that the presupernova type II stage could be represented by the small amplitude irregular and semiregular red variables with large masses belonging to young population I is briefly indicated.

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