Structure Of Accretion And Outflow 10-100 AU From A High-mass YSO

Details Structure Of Accretion And Outflow 10-100 AU From A High-mass YSO Structure Of Accretion And Outflow 10-100 AU From A High-mass YSO

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21115407g&link_type=abstract

American Astronomical Society, AAS Meeting #211, #154.07; Bulletin of the American Astronomical Society, Vol. 39, p.1007

Astronomy and Astrophysics

Astronomy

Scientific paper

Around higher mass Young Stellar Objects (YSOs), the region inside 100 AU radius is where outflows from accretion disks are launched and collimated. However, observational constraints on disk-mediated accretion in this context have been elusive. The KaLYPSO project (http://www.cfa.harvard.edu/kalypso/) seeks to address limitations by mapping with sub-AU resolution molecular emission from material 10-100 AU from the nearest massive YSO (so-called radio source I in the Orion BN/KL region). Monthly VLBI observation over 3 years has enabled mapping of 3-D dynamics as well as structure. I will present the latest movie of bulk flow around source-I, discuss the relationship to local bipolar outflow inside 1000 AU, present hypotheses concerning what drives the observed mass loss, and discuss implications for the structure of the BN/KL region.

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