Formation of dust grains in the ejecta of SN 1987A. II

Details Formation of dust grains in the ejecta of SN 1987A. II Formation of dust grains in the ejecta of SN 1987A. II

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...249..474k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 249, no. 2, Sept. 1991, p. 474-482.

Astronomy and Astrophysics

Astrophysics

103

Cosmic Dust, Grain Size, Light Curve, Stellar Mass Ejection, Supernova 1987A, Aluminum Oxides, Iron Oxides, Magnesium Compounds, Silicates

Scientific paper

The grain formation of the ejecta from SN 1987A is reinvestigated using the revised hydrodynamical model, the elemental composition of the ejecta, and the theory of homogeneous nucleation and grain growth. The observed infrared light curve is compared with the calculated one using both a condensation calculation and the observed 10-micron flux. It is suggested that the condensation efficiency of dust grains in the ejecta is greater than 0.3. The grain number density in the clumps is less than five times that of the uniform ejecta. The observed infrared luminosity is attributed to the thermal radiation from dust grains in the optically thick part of the ejecta.

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