Formation and Destruction of Silicon Monoxide in SN 1987A

Details Formation and Destruction of Silicon Monoxide in SN 1987A Formation and Destruction of Silicon Monoxide in SN 1987A

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...471..480l&link_type=abstract

Astrophysical Journal v.471, p.480

Astronomy and Astrophysics

Astronomy

20

Molecular Processes, Stars: Supernovae: Individual Alphanumeric: Sn 1987A

Scientific paper

We present a new chemistry model for the silicon monoxide molecules in SN 1987A. It incorporates an enhanced rate of formation by radiative association and an enhanced rate of destruction through charge transfer between SiO and Ar^+^ and Ne^+^, which is more efficient than the energetic electron impact ionization and dissociation in a previous model. The conclusion is unchanged that the 10^-4^-10^-3^ M_sun_ of SiO observed in SN 1987A can be produced by chemistry models in which there is no microscopic mixing of helium into the silicon-oxygen region of the ejecta.

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