Internal Proper Motion of the 6.7 GHz Methanol Masers in G320.23-0.28

Details Internal Proper Motion of the 6.7 GHz Methanol Masers in G320.23-0.28 Internal Proper Motion of the 6.7 GHz Methanol Masers in G320.23-0.28

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1893s&link_type=abstract

ATNF proposal V292, Semester: October, 2008

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Stellar, Lba

Scientific paper

The methanol masers at 6.7 GHz could be powerful probes to investigate massive star formation, but it is unclear whether this maser is associated with an accretion disk around a massive young stellar object (YSO) or shock regions which are formed by outflows ejected from the YSO. We propose to carry out multi-epoch observations and measure internal proper motions of the methanol maser at 6.7 GHz in order to investigate the associating site. The target source G320.23-0.28 is the best candidate for the investigation. We expect to detect internal proper motions of 0.3 mas/yr rotation or toward the central star (infall), or motions of 0.5 mas/yr being directed away from each other (bipolar outflow). Present observations would lead to find out the associating site of the 6.7 GHz methanol masers.

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