Supernova 1987A - The progenitor corridor

Details Supernova 1987A - The progenitor corridor Supernova 1987A - The progenitor corridor

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341..925b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 341, June 15, 1989, p. 925-933. Research supported by the Robert A. Welch F

Astronomy and Astrophysics

Astrophysics

6

Astrophysics, Stellar Envelopes, Supernova 1987A, Helium, Stellar Composition, Stellar Evolution, Stellar Luminosity, Stellar Mass

Scientific paper

The allowed range of progenitor structures for SN 1987A is shown to be a narrow 'corridor' in the parameter space of envelope mass M(env), and helium enrichment Y. The principle constraints adopted from evolutionary studies are that the hydrogen burning shell be extinct and that the helium burning shell be active. Assuming hydrostatic and thermal equilibrium in the structure beyond the helium burning shell, the progenitor structure of SN 1987A is constrained by determining the parameters which are consistent with the observed properties of SK -69, 202 deg. Self-consistency requires that the radius of the helium core or the location of the helium burning shell or both vary with envelope mass and composition even at fixed luminosity, core mass, and stellar radius.

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