Variability of the H2O Maser at the Mira Variable RS VIR

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

In this work we analize single dish observations of the 22 GHz H2O maser associated with the RS Vir Mira Star. A catalog of the observations, carried out from 1984 to 1997 is presented. The integrated flux and the central velocity were computed and compared with the luminosity curve of the central star. AAVSO data were used to make comparison. We study the time variations of the light curve periods and the 22 GHz flux period (and the dependence between them), also study the lag variations of the 22 GHz flux curve (respect the light curve). On the basis of the integrated flux we measured, for each cycle, the period of the flux curve and the lag of the 22 GHz flux curve

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