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Infrared Observations of SN 1987A: Probing the Ejecta and its Surrounding Medium

Published online by Cambridge University Press:  25 April 2016

E. Dwek
E. Dwek*
Affiliation:
NASA/Goddard Space Flight Center
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Abstract

The extremely rare occurrence of a relatively nearby supernova, SN 1987A, provides astronomers with a unique opportunity to conduct the most detailed multi-wavelength analysis of this event and its effect on the ambient medium. Looking inside the supernova, astronomers are getting their first ‘unbiased’ view of the composition of the expanding ejecta. The infrared (IR) region of the spectrum can carry the signature of products ranging from heavy elements, synthesised during the early phases of the expansion, to molecules and dust formed after the ejecta underwent significant cooling. Probing the ambient medium, IR observers can gain information on the presence and distribution of dust in close proximity (∼1 pc) to the supernova (SN), and on the interaction of the SN blast wave with the surrounding dusty medium. At larger distances from the SN, they can set constraints on dust properties in the scattering dust layers detected at distances of ∼120 and ∼330 pc from the supernova.

Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 7 , Issue 4 , 1988 , pp. 468 - 472
Copyright
Copyright © Astronomical Society of Australia 1988

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