Joint VLBA/VLTI Observations of the Mira Variable GX Mon

Details Joint VLBA/VLTI Observations of the Mira Variable GX Mon Joint VLBA/VLTI Observations of the Mira Variable GX Mon

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910112b&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #101.12; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We present preliminary results from coordinated polychromatic observations of the Mira variable star GX Mon made with the Very Long Baseline Array (VLBA) and the Very Large Telescope Interferometer (VLTI). VLBA observations of the SiO maser emission combined with concurrent VLTI observations made with the mid-infrared science instrument (MIDI) allow us to study the circumstellar environment of evolved stars at the various distances probed by the different techniques. Here we present the first images of the v=1, J=1-0 (43.1 GHz) and the v=2, J=1-0 (42.8 GHz) SiO masers in the circumstellar atmosphere of GX Mon. We relate these images to the stellar diameter and characteristics of the nearby circumstellar dust formation zone as measured for the first time by VLTI-MIDI.

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