Shocked similarity collapses and flows in star formation processes

Details Shocked similarity collapses and flows in star formation processes Shocked similarity collapses and flows in star formation processes

2004-07-16

arxiv.org/abs/astro-ph/0407328v1

Astrophys.J. 611 (2004) L117-L120

Astronomy and Astrophysics

Astrophysics

ApJL accepted

Scientific paper

10.1086/424006

We propose self-similar shocked flow models for certain dynamical evolution phases of young stellar objects (YSOs), `champagne flows' of H {\sevenrm II} regions surrounding OB stars and shaping processes of planetary nebulae (PNe). We analyze an isothermal fluid of spherical symmetry and construct families of similarity shocked flow solutions featured by: 1. either a core expansion with a finite central density or a core accretion at constant rate with a density scaling $\propto r^{-3/2}$; 2. a shock moving outward at a constant speed; 3. a preshock gas approaching a constant speed at large $r$ with a density scaling $\propto r^{-2}$. In addition to testing numerical codes, our models can accommodate diverse shocked flows with or without a core collapse or outflow and an envelope expansion or contraction. As an application, we introduce our model analysis to observations of Bok globule B335.

Affiliated with

Also associated with

No associations

Rating

Shocked similarity collapses and flows in star formation processes 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 Shocked similarity collapses and flows in star formation processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shocked similarity collapses and flows in star formation processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-635740