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Silicon Monoxide in Supernova SN1987A

Published online by Cambridge University Press:  07 August 2017

Craig H. Smith ,
David K. Aitken  and
Patrick F. Roche
Craig H. Smith
Affiliation:
Dept. of Physics, University College ADFA, Campbell, ACT, 2601, Australia
David K. Aitken
Affiliation:
Dept. of Physics, University College ADFA, Campbell, ACT, 2601, Australia
Patrick F. Roche
Affiliation:
Dept. of Astrophysics, University of Oxford, Oxford, OX1 3RH, U.K.

Abstract

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The 8.1 μm Δv = 1 emission band of silicon monoxide detected in SN 1987A is modelled. Near day 500 the SiO mass is 4 ± 2 10−6M⊙ and the excitation temperature is ~1500 K. The mass of SiO is about 10 percent of the mass of dust inferred from the mid infrared 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.

Type
Near Stellar Environments
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 371 - 372
Copyright
Copyright © Kluwer 1992