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The Most Detailed Picture Yet of an Embedded High Mass YSO

Published online by Cambridge University Press:  23 September 2016

L. J. Greenhill ,
M. J. Reid ,
C. J. Chandler ,
P. J. Diamond  and
M. Elitzur
L. J. Greenhill
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA
M. J. Reid
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA
C. J. Chandler
Affiliation:
NRAO, P.O. Box O, Socorro, NM 87801, USA
P. J. Diamond
Affiliation:
MERLIN/VLBI National Facility, Jodrell Bank Observatory, Macclesfield, SK11 9DL, UK
M. Elitzur
Affiliation:
Department of Physics & Astronomy, University of Kentucky, Lexington, KY 40506, USA

Abstract

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High-mass star formation is not well understood chiefly because examples are deeply embedded, relatively distant, and crowded with sources of emission. Using VLA and VLBA observations of H2O and SiO maser emission, we have mapped in detail the structure and proper motion of material 20-500 AU from the closest high-mass YSO, radio source I in the Orion KL region. We observe streams of material driven in a rotating, wide angle, bipolar wind from the the surface of an edge-on accretion disk. The example of source I provides strong evidence that high-mass star formation proceeds via accretion.

Type
Part 4: Massive Star Formation
Information
Symposium - International Astronomical Union , Volume 221: Star Formation at High Angular Resolution , 2004 , pp. 155 - 160
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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