Progenitor structure of SN 1987A

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166649· OSTI ID:6685131

Barkat, Z; Wheeler, J C

A careful study is made of the structure of the progenitor of SN 1987A, presumed to be SK - 69 deg 202. For fixed luminosity, helium core mass, and envelope composition, self-consistent solutions for the envelope mass fall into two families. For solar hydrogen abundance, one set of solutions has large envelope mass corresponding to the main-sequnce mass being virtually intact and the other allowed solutions have very small envelope mass, about 0.1 solar. This accounts for the dichotomy of some models in the literature. For fixed luminosity, total mass, core mass, and core radius, a triple-valued set of solutions can be found for the structure as a function of effective temperature. One of the solutions correspond to the Hyashi track, but the other two can represent blue supergiants with different core and envelope structures. 35 references.

• Research Organization: Jerusalem Hebrew Univ. (Israel); Texas Univ,, Austin (USA)
• OSTI ID: 6685131
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 332; ISSN ASJOA
• 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
ABUNDANCE
ELEMENTS
ERUPTIVE VARIABLE STARS
FLUIDS
GALAXIES
GASES
GIANT STARS
HELIUM
HYDROGEN
LUMINOSITY
MAGELLANIC CLOUDS
MASS
MORPHOLOGY
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RARE GASES
SELF-CONSISTENT FIELD
STAR EVOLUTION
STARS
SUPERGIANT STARS
SUPERNOVAE
TEMPERATURE GRADIENTS
VARIABLE STARS