Proper Motions of Mira's SiO Masers

Details Proper Motions of Mira's SiO Masers Proper Motions of Mira's SiO Masers

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.9213p&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #92.13; Bulletin of the American Astronomical Society, Vol. 33, p.1442

Astronomy and Astrophysics

Astronomy

Scientific paper

SiO maser emission provides a unique probe of the kinematics in the extended atmospheres of late-type stars. Using NRAO's Very Long Baseline Array (VLBA), we have obtained five epochs of observations of the v=1 and v=2, J=1 -> 0 SiO maser emission toward the long-period variable Mira (o Ceti). These observations show the changes in the SiO masers over phases 0.1 to 0.6 in the 332-day stellar pulsation cycle. We present the results of a study of the proper motions of the SiO masers obtained from the data and the implications for the motions of the gas in the circumstellar envelope of Mira.

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