Silicon monoxide in supernova 1987A

Details Silicon monoxide in supernova 1987A Silicon monoxide in supernova 1987A

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252p..39r&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Sept. 15, 1991, p. 39P-42P. Research supported by

Astronomy and Astrophysics

Astronomy

28

Emission Spectra, Silicon Oxides, Stellar Spectra, Supernova 1987A, Abundance, Cosmic Dust, Infrared Radiation, Magellanic Clouds, Stellar Models

Scientific paper

The 8.1-micron Delta(nu) = 1 emission band of silicon monoxide detected in SN 1987A is modeled. Near day 500 the SiO mass is 4 + or - 2 x 10 to the -6th solar mass and the excitation temperature is about 1500 K. The mass of SiO is about 10 percent of the mass of dust inferred from the midinfrared emission near day 600, while the temperature is close to the condensation temperature of silicate grains. The SiO molecules may have been precursors to dust grain formation.

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