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High resolution observations of SiO masers: Comparing the spatial distribution at 43 and 86 GHz
We present sub-milliarcsecond observations of SiO masers in the late-type stars IRC +10011 and χ Cyg. We have used the NRAO Very Long Baseline Array (VLBA) to map the 43 GHz (, 2 –0) and the 86 GHz (, 2 ) SiO masers. All the transitions have been imaged except …