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SN 1987A in the UV: the Progenitor Star, the Reddening and the Possible Detection of a UV Light Echo

Published online by Cambridge University Press:  25 April 2016

Roberto Gilmozzi
Roberto Gilmozzi*
Affiliation:
ESA IUE Observatory, Madrid
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Abstract

Some special issues to which IUE observations have provided crucial insight are presented. The arguments leading to the definitive identification of Sk−69°202 as the progenitor of the LMC supernova are reviewed, and a preliminary determination of the reddening toward SN 1987A, based on the IUE spectra of stars 2 and 3, is discussed. Recent observations at the predicted position of the SN ultraviolet light echo are reported, and evidence, albeit circumstantial, is provided that a UV echo has been detected. Some consequences of this result are explored. The relevance of this observation lies in the fact that a UV echo, if really detected, would give direct information of the spectrum of the SN at the time of the shock breakout.

Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 7 , Issue 4 , 1988 , pp. 397 - 400
Copyright
Copyright © Astronomical Society of Australia 1988

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