Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...428l..17c&link_type=abstract
The Astrophysical Journal, vol. 428, no. 1, pt. 2, p. L17-L19
Astronomy and Astrophysics
Astrophysics
20
Line Spectra, Nuclear Fusion, Oxygen, Statistical Analysis, Stellar Evolution, Stellar Mass, Supernova 1987A, Astronomical Models, Taylor Instability
Scientific paper
The sawtooth structure in the profile of the forbidden oxygen doublet (O I) lambda lambda 6300, 6364 of SN 1987A is identified with the statistical fluctuations of the oxygen cloud number. A model of spherical clouds homogeneously distrubuted in the spherical volume v is less than 1700 km/s is assumed to describe the fluctuations. The observed mean square fluctuation can be reproduced if the number of clouds with characteristic velocity radius 60 km/s is approximately 2 x 103 and the corresponding filling factor of the oxygen material f is approximately 0.1. The combination of this filling factor with the ratio MO f-1 determined by the self-absorption effect results in the distance-independent estimate of the mass of clumpy oxygen in SN 1987A, MO is approximately 1.2-1.5 solar mass.
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