The Co-57 abundance in SN 1987A

Details The Co-57 abundance in SN 1987A The Co-57 abundance in SN 1987A

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...399l.141c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 399, no. 2, p. L141-L144.

Astronomy and Astrophysics

Astrophysics

41

Cobalt Isotopes, Gamma Ray Spectra, Nuclear Astrophysics, Supernova 1987A, Chemical Evolution, Light Curve, Metallicity, Nuclear Fusion, Stellar Evolution, Stellar Luminosity, Stellar Models

Scientific paper

Astrophysical implications of the detection by OSSE of Co-57 gamma radiation from SN 1987A are discussed. By burying the alpha-rich-freezeout portion at deeper gamma depths than in published models, it is shown that it remains barely possible that the bolometric luminosity during days 1200-1800 could derive from Co-57 power without requiring 57/56 production ratios greater than twice solar. Alternative mechanisms which may contribute to the bolometric power at late times are proposed.

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