Supernovae from collapse of oxygen-magnesium-neon cores

Details Supernovae from collapse of oxygen-magnesium-neon cores Supernovae from collapse of oxygen-magnesium-neon cores

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334..909m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 15, 1988, p. 909-926.

Astronomy and Astrophysics

Astrophysics

113

Gravitational Collapse, Shock Waves, Stellar Cores, Stellar Evolution, Supernovae, Magnesium, Neon, Oxygen, Stellar Composition

Scientific paper

The collapse of degenerate oxygen-magnesium-neon cores produces supernovae that are sensitive to the characteristics of both hydrodynamical bounce and nuclear burning. The authors report the results of a numerical study of the collapse of such a core. An explosion is produced primarily via late-time neutrino heating, and not by prompt exit of the shock wave formed after core bounce. Explosion energies are in the range (0.6 - 1.2)×1051ergs. For models with the larger energy, a neutron star remnant is formed with a gravitational mass of about 1.2 M_sun;. If the outer hydrogen-helium envelope originally surrounding the core has been lost prior to collapse and the collapsing object is a bare white dwarf, a neutron star remnant can be produced without a spectacular optical display.

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