Supernova 1987A - The progenitor corridor

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167550· OSTI ID:5470210

Barkat, Z; Wheeler, J C ^[1]

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1. Jerusalem, Hebrew Univ. (Israel)

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. 13 refs.

• OSTI ID: 5470210
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 341; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
CHEMICAL COMPOSITION
CONSTRAINTS
ELEMENTS
ERUPTIVE VARIABLE STARS
FLUIDS
GASES
HELIUM
HELIUM BURNING
HYDROGEN BURNING
LUMINOSITY
MASS
MORPHOLOGY
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RARE GASES
STAR BURNING
STAR EVOLUTION
STARS
SUPERNOVAE
VARIABLE STARS