The Evolution of Young Stars, Protostellar Jets & Bipolar Outflows - a Unification Scheme
Author: Smith, M.D.
Source: Astrophysics and Space Science, Volume 261, Number 1-4, 1998 , pp. 169-178(10)
Abstract:Close links between jet evolution and protostellar evolution are beginning to be understood. Firstly, stellar jets are reviewed here, establishing the accretion-outflow connection. Then, outflows from young stars are reviewed, suggesting a synchronised development in the star and outflow. This yields a unification scheme in which rising molecular jets dominate the early protostellar epoch, followed by a jet-driven outflow stage and, finally, a bow-driven ballistic stage. This scheme is quantified, yielding the systematic changes in the bolometric, mechanical and shock luminosities and the cross-over phase from dense molecular jets to light atomic jets.
Document Type: Regular Paper
Affiliations: Astronomisches Institut der Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
Publication date: January 1, 1998