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The final 112-frame movie of the 43 GHz SiO masers around the Mira Variable TX Cam

Published online by Cambridge University Press:  24 July 2012

Ioannis Gonidakis ,
Philip J. Diamond  and
Athol J. Kemball
Ioannis Gonidakis
Affiliation:
CSIRO Astronomy and Space Science Vimiera and Pembroke Roads, Marsfield NSW 2122, Australia email: [email protected]
Philip J. Diamond
Affiliation:
CSIRO Astronomy and Space Science Vimiera and Pembroke Roads, Marsfield NSW 2122, Australia email: [email protected]
Athol J. Kemball
Affiliation:
Dept. of Astronomy, University of Illinois at Urbana-Champaign 1002 W. Green Street, Urbana, IL 61801, USA
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Abstract

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The proximity of the SiO masers to the star, makes them a powerful tool for studying the properties of the extended stellar atmosphere. This project is a long monitoring campaign of the 43 GHz SiO masers (v=1 J=1→0) around the Mira Variable TX Cam. The target source was observed with the Very Long Baseline Array (VLBA) from the 24th of May 1997 to the 25th of January 2002 in bi-weekly or monthly intervals, covering 3.06 stellar cycles. The time-span and frequency of observations helped us examine the long and short-term properties of the emission and study the dynamics of the gas, the existence of shock waves and their contribution to the morphology and kinematics. Maps from each epoch were concatenated into a 112-frame movie showing the evolution of the emission around TX Cam.

Keywords

masersshock wavestechniques:high angular resolutiontechniques:interferometricstars:AGB and post-AGBstars:imagingstars:winds and outflowsstars:circumstellar matterradio lines:stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 240 - 244
Copyright
Copyright © International Astronomical Union 2012

References

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