H alpha emission HD237091 has been increasing for several years and has now lost its central absorption
Robin
significant evolution of HD 237091 H alpha
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significant evolution of HD 237091 H alpha
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
http://www.threehillsobservatory.co.uk