'Jetlike' ejection of Ni-56 in the supernova 1987A?

Details 'Jetlike' ejection of Ni-56 in the supernova 1987A? 'Jetlike' ejection of Ni-56 in the supernova 1987A?

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pazh...17..942c&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 17, Oct. 1991, p. 942-952. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

3

Nickel Isotopes, Stellar Mass Ejection, Stellar Spectra, Supernova 1987A, Emission Spectra, H Alpha Line, Red Shift, Stellar Envelopes

Scientific paper

An emission identified with the redshifted line of He I 1.083 micron in the 1.09-micron feature in the spectrum of SN 1987A on day 38 is found. The emission is explained by the scattering of the photospheric radiation by the cloud of excited helium associated with the Ni-56 cloud in the distant hemisphere at a level greater than about 5000 km/s. The same Ni-56 cloud also results in the appearance of a red emission satellite in hydrogen lines between days 20 and 100. Arguments are presented in favour of jetlike ejection of Ni-56 in SN 1987A, which accounts for virtually all the observed manifestations of the nonsphericity of this supernova.

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