IRAS 06562-0337 - Final mass-loss episodes before the formation of a planetary nebula?
The onset of forbidden line emission in the spectrum of a proto-planetary nebula has been detected for the first time in the lapse of only two years. IRAS 06562-0337 was first observed in December 1987 and October 1988, showing only the Balmer lines in emission. A third spectrum obtained in February 1990 shows a quite different appearance, with
Garcia-Lario, P. et al.
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1993