Old cold dust heated by supernova 1987A

Details Old cold dust heated by supernova 1987A Old cold dust heated by supernova 1987A

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.337..533r&link_type=abstract

Nature (ISSN 0028-0836), vol. 337, Feb. 9, 1989, p. 533-535.

Astronomy and Astrophysics

Astronomy

45

Cosmic Dust, Infrared Astronomy, Supernova 1987A, Ellipsoids, Stellar Spectra

Scientific paper

The midinfrared emission from SN1987A, which had been fading steadily since reaching a peak about 120 days after outburst, began to increase again on about day 450. This increase has continued up to at least day 578. Here, additional observations are presented and the mass, location, and nature of the emitting dust are discussed. The dust grains cannot have formed in the supernova ejecta, nor do they appear to be symmetrically distributed about it; rather, they are located at a distance of about one light year from, and mostly behind, the supernova.

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