Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325l...1r&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 325, Feb. 1, 1988, p. L1-L4. Research sponsored by
Astronomy and Astrophysics
Astronomy
18
Cosmic Dust, Infrared Sources (Astronomy), Supernova 1987A, Emission Spectra, Hydrogen, Line Spectra, Photosphere
Scientific paper
Supernova 1987A was observed spectroscopically in the wavelength range 5.25 - 12.6 μm from the Kuiper Airborne Observatory on two nights, approximately 60 days after the initial outburst and about 25 days before maximum light. Significant spectral features superposed on the 5500K photospheric continuum were seen on both flights. Strong Huβ and Pfα emission lines were observed from the extended hydrogen envelope above the photosphere of the supernova. In addition to these emission lines, an infrared excess emission was observed from 7 μm to at least 11.5 μm. This excess emission may represent evidence for an infrared echo from dust grains heated by the supernova outburst.
Bregman Jesse
Cohen Martin
Lynch David K.
Rank David M.
Russell Ray W.
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