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1. 1. Molecular gas around the binary star R Aquarii

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Terese Olander; [2017]
   Keywords : R Aquarii; R Aqr; circumstellar envelope; CSE; CO;

   Abstract : At the end of the lives of low- to intermediate mass stars they can be found on the asymptotic giant branch (AGB). The AGB phase ends when the entire circumstellar envelope (CSE) is blown away in a superwindphase, in the end creating a planetary nebula. It is unknown what shapes the CSE and the planetary nebula. Binarity is a favored theory. READ MORE