Control Number
Presentation Preference
Preliminary Modeling Of Orion Source I:Accretion And Outflow Within 10 - 1000 Au Of A Forming High-mass Star
Author Block
Arpita Roy1, E. M. L. Humphreys2
1Franklin & Marshall College, 2Harvard-Smithsonian Center for Astrophysics.
18. Star Formation
Radio Source I in the Orion BN/KL region is the nearest example of a high-mass young stellar object (YSO), and one of the few star-forming sources known to power both H2O and SiO masers. These masers enable mapping of the structure and dynamical evolution of material within 10 - 1000 AU of a high-mass YSO in unprecedented detail (~0.1 AU resolution), and provide strong evidence for a compact disk and outflow. In this poster, we present examples of the dataset that we have used to inform preliminary geometric and dynamical models of Source I. We show a comparison of simple models aimed at establishing the YSO geometry that include treatments of maser (un)saturation, and varying density and velocity fields. Finally, we discuss the implications of our results for high-mass star formation in general.

OASIS - Online Abstract Submission and Invitation System™ 1996-2008, Coe-Truman Technologies, Inc.