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Paper: Some of What 1612 MHz Masers Tell Us about the dM/dt of OH/IR Stars
Volume: 378, Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes
Page: 311
Authors: Lewis, B.M.
Abstract: 80% of the most massive OH/IR stars with the reddest mid-infrared colors appear to have detached shells: these are due to a strongly modulated mass-loss rate on a much longer time-scale than their pulsational periods. The complete switching off & on of 1612 MHz masers in the low-mass star IRAS 19479+2111 suggests now that all OH/IR stars have a strongly modulated dM/dt.
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