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Variations of optical and water maser emission from long period variables

1993; Springer Science+Business Media; Linguagem: Inglês

10.1007/3-540-56343-1_259

1616-6361

P. J. Benson, I. R. Little-Marenin, Robert R. Cadmus,

Astronomy and Astrophysical Research

We have monitored the 22 GHz H2O maser line from 22 LPVs since 1987. All stars show highly variable water maser emission with most Miras having a phase lag of 0.3 phase between the water maser and optical emission. VX UMa appears to show variations associated with a rotating circumstellar disk.