Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-10-14
Astronomy and Astrophysics
Astrophysics
35 pages, 11 figures (PNG and EPS)
Scientific paper
10.1086/308389
The interaction of a stellar or disk wind with a collapsing environment holds promise for explaining a variety of outflow phenomena observed around young stars. In this paper we present the first simulations of these interactions. The focus here is on exploring how ram pressure balance between wind and ambient gas and post-shock cooling affects the shape of the resulting outflows. In our models we explore the role of ram pressure and cooling by holding the wind speed constant and adjusting the ratio of the inflow mass flux to the wind mass flux (Mdot_a/Mdot_w) Assuming non-spherical cloud collapse, we find that relatively strong winds can carve out wide, conical outflow cavities and that relatively weak winds can be strongly collimated into jet-like structures. If the winds become weak enough, they can be cut off entirely by the infalling environment. We identify discrepancies between results from standard snowplow models and those presented here that have important implications for molecular outflows. We also present mass vs. velocity curves for comparison with observations.
Delamarter Guy
Frank Alejandro
Hartmann Lee
No associations
LandOfFree
Interaction of Infall and Winds in Young Stellar Objects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interaction of Infall and Winds in Young Stellar Objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interaction of Infall and Winds in Young Stellar Objects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-105604