TY - JOUR
T1 - Comparison of the v=1 and v=2, j=1→0 SiO masers toward TX cam
AU - Gonidakis, Ioannis
AU - Diamond, Phil
AU - Kemball, Athol
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2012
Y1 - 2012
N2 - The extended atmospheres/inner circumstellar envelopes of Asymptotic Giant Branch stars are very complex regions where intense phenomena occur and periodic passages of shock waves are believed to contribute to their complexity. Located between the extended atmosphere and the dust formation zone, SiO masers provide a valuable tool in the study of these complex regions. Registration of the relative positions of the v=1 and v=2, J=1→0 emissions can help us compare the characteristics of these transitions; such comparisons can greatly contribute in our understanding of the physical conditions and kinematics in the extended atmosphere of the star. We will present results from a long-term monitoring campaign of both emissions. Our data cover 0.6 cycles of the stellar pulsation. Observations were conducted with the VLBA once every month.
AB - The extended atmospheres/inner circumstellar envelopes of Asymptotic Giant Branch stars are very complex regions where intense phenomena occur and periodic passages of shock waves are believed to contribute to their complexity. Located between the extended atmosphere and the dust formation zone, SiO masers provide a valuable tool in the study of these complex regions. Registration of the relative positions of the v=1 and v=2, J=1→0 emissions can help us compare the characteristics of these transitions; such comparisons can greatly contribute in our understanding of the physical conditions and kinematics in the extended atmosphere of the star. We will present results from a long-term monitoring campaign of both emissions. Our data cover 0.6 cycles of the stellar pulsation. Observations were conducted with the VLBA once every month.
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M3 - Conference article
AN - SCOPUS:85052404558
SN - 1824-8039
VL - 2012-October
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 11th European VLBI Network Symposium and Users Meeting, EVN Symposium 2012
Y2 - 9 October 2012 through 12 October 2012
ER -