Theoretical models for Type I and Type II supernova

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5351849

Woosley, S E; Weaver, T A

Recent theoretical progress in understanding the origin and nature of Type I and Type II supernovae is discussed. New Type II presupernova models characterized by a variety of iron core masses at the time of collapse are presented and the sensitivity to the reaction rate /sup 12/C(..cap alpha..,..gamma..)/sup 16/O explained. Stars heavier than about 20 M/sub solar/ must explode by a ''delayed'' mechanism not directly related to the hydrodynamical core bounce and a subset is likely to leave black hole remnants. The isotopic nucleosynthesis expected from these massive stellar explosions is in striking agreement with the sun. Type I supernovae result when an accreting white dwarf undergoes a thermonuclear explosion. The critical role of the velocity of the deflagration front in determining the light curve, spectrum, and, especially, isotopic nucleosynthesis in these models is explored. 76 refs., 8 figs.

• Research Organization: California Univ., Santa Cruz (USA). Lick Observatory; Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5351849
• Report Number(s): UCRL-92972; CONF-850375-19; ON: DE85016288
• 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
BLACK HOLES
CHEMICAL COMPOSITION
DATA
DWARF STARS
ERUPTIVE VARIABLE STARS
HYDRODYNAMIC MODEL
INFORMATION
MATHEMATICAL MODELS
NUCLEOSYNTHESIS
NUMERICAL DATA
ORIGIN
PARTICLE MODELS
STAR EVOLUTION
STARS
STATISTICAL MODELS
SUPERNOVAE
SYNTHESIS
THEORETICAL DATA
THERMODYNAMIC MODEL
VARIABLE STARS
WHITE DWARF STARS