Abstract
view Abstract Citations (31) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Oxygen Mass in SN 1987A: Making Use of Fluctuations in the [O i] lambda lambda 6300, 6364 Profile Chugai, Nikolai N. Abstract The "sawtooth" structure in the profile of the forbidden oxygen doublet [O I] λλ6300,6364 of SN 1987A is identified with the statistical fluctuations of the oxygen cloud number. A model of spherical clouds homogeneously distributed in the spherical volume v < 1700 km s^-1^ 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^-1^ is ~2 x 10^3^ and the corresponding filling factor of the oxygen material f is ~0.1. The combination of this filling factor with the ratio M_o_ f^-1^ determined by the self-absorption effect results in the distance-independent estimate of the mass of clumpy oxygen in SN 1987A, M_o_~ 1.2-1.5 M_sun_. Publication: The Astrophysical Journal Pub Date: June 1994 DOI: 10.1086/187382 Bibcode: 1994ApJ...428L..17C Keywords: Line Spectra; Nuclear Fusion; Oxygen; Statistical Analysis; Stellar Evolution; Stellar Mass; Supernova 1987a; Astronomical Models; Taylor Instability; Astrophysics full text sources ADS | data products NED (2) SIMBAD (1)
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