The Rotating Structures and Outflow of IRAS 16547-4247

Details The Rotating Structures and Outflow of IRAS 16547-4247 The Rotating Structures and Outflow of IRAS 16547-4247

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21114502f&link_type=abstract

American Astronomical Society, AAS Meeting #211, #145.02; Bulletin of the American Astronomical Society, Vol. 39, p.998

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We present VLA 1.3 cm radio continuum and water maser observationsas well as SMA SO2 (226.300 GHz) and dust continuum observationstoward the massive star formation region IRAS 16547-4247. We foundevidence of a rotating structure around a central massive source at small scale ( 10 AU) traced by the water masers and at large scale( 1000 AU) traced by molecular line emission. The two structures areconsistent with each other in the sense of rotation and inclinationangle. The position angle of the rotating structures is roughlyperpendicular to the overall outflow observed in radio continuum andmolecular tracers. We estimate the mass of the central source to bearound 14 solar masses from the water masers and the SO2 emission which trace quite different size scales. We also observed water masers that are associated with the large scale molecular outflowfrom the system. In addition we have detected maser emission that isprobably associated with other sources in the region.

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