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The Strange Behavior of Fg Sagittae

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Josefa M. Manella

AAVSO, Cambridge, Massachusetts




FG Sagittae is a peculiar variable star surrounded by a planetary nebula. The star has undergone a steady increase in brightness over the past 80 years. Recently, the spectrum was discovered to be changing, as well. There is a suggestion the FG Sge could be in the process of releasing another nebulous shell.


Link to ADS abstract, article and citation information

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