Previous abstract Next abstract

Session 5 - Accretion and Outflows in YSOs.
Display session, Wednesday, January 07
Exhibit Hall,

[5.05] A Model for Infall-Outflow Interactions in Protostellar Disks

W. Langer, T. Velusamy (Jet Propulsion Laboratory, Caltech)

Recently we have shown^1,2 from ^12CO and C^18O OVRO-MMA observations evidence of infall-outflow interactions in the Young Stellar Object IRS1 in B5. We present new data obtained with the OVRO-MMA in ^13CO(2-1) and (1-0) to trace the full extent of this infall-outflow interaction region. We find that the infall geometry has been greatly modified by the wide opening angle, \sim 120^\circ outflow near the star to an e quatorially flared disk. We discuss a phenomenological model to explain the interaction between infall and outflow and the evolution of the infall geometry with time. Our model predicts in the case of IRS1 in B5 that the infall will stop in about 10,000 - 20,000 years.

This research has been conducted at the Jet Propulsion Laboratory, California Institute of Technology with support from the National Aeronautics and Space Administration. The OVRO-MMA is supported by a grant from the National Science Foundation to Caltech.

1. Langer, W., Velsuamy, T. amp; Xie, T. 1996, ApJ Letters, 486, L41.

2. Velusamy, T. amp; Langer, W. 1997, preprint.

Program listing for Wednesday