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astro-ph.GA2024★ 1 cited
Water vapour masers in long-period variable stars III. Mira variables U Her and RR Aql
A. Winnberg, J. Brand, D. Engels
Within the 'Medicina/Effelsberg H2O maser monitoring program' we observed U Her and RR Aql at 22-GHz for about two decades between 1990 and 2011, with a gap between 1997 and 2000 i…
astro-ph.GA2024
Patterns in water maser emission of evolved stars on the timescale of decades
Jan Brand, Dieter Engels, Anders Winnberg
We present our past and current long-term monitoring program of water masers in the circumstellar envelopes of evolved stars, augmented by occasional interferometric observations.…