@inproceedings{5ed6fb212a8c4f0dae51450a30e3c31c,
title = "Making movies of stars: VLBA monitoring of the SiO masers around the Mira variable TX Cam",
abstract = "We have produced a movie of the time evolution of the v = 1, J = 1--0 43 GHz SiO masers in the inner circumstellar envelope of the isolated Mira variable TX Cam. Our observations, taken every two weeks with the VLBA, currently cover about 60% of the stellar cycle from φ ~ 0.6 --> φ ~1.2. They show that, in contrast to previous observations and theoretical models, the gas in which the masers are embedded is undergoing expansion during this period with a typical velocity of 3.65 +/- 0.15 km/s. Some isolated features are seen to start falling back towards the star at around φ ~1.0. We suggest that the 5 --> 10 G magnetic fields we have previously detected at the position of the SiO masers may explain the departure from the expected behaviour. ",
author = "P.J. Diamond and A.J. Kemball",
year = "1999",
language = "English (US)",
isbn = "1-886733-90-2",
series = "IAU Symposium",
number = "191",
pages = "195--200",
editor = "{Le Bertre}, T. and A. Lebre and C. Waelkens",
booktitle = "Asymptotic Giant Branch Stars",
}