Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-01-15
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
5 pages, 2 figures, accepted by ApJ Letters
Scientific paper
10.1088/0004-637X/694/1/L26
We present high resolution simulations on the impact of ionizing radiation of massive O-stars on the surrounding turbulent interstellar medium (ISM). The simulations are performed with the newly developed software iVINE which combines ionization with smoothed particle hydrodynamics (SPH) and gravitational forces. We show that radiation from hot stars penetrates the ISM, efficiently heats cold low density gas and amplifies over-densities seeded by the initial turbulence. The formation of observed pillar-like structures in star forming regions (e.g. in M16) can be explained by this scenario. At the tip of the pillars gravitational collapse can be induced, eventually leading to the formation of low mass stars. Detailed analysis of the evolution of the turbulent spectra shows that UV-radiation of O-stars indeed provides an excellent mechanism to sustain and even drive turbulence in the parental molecular cloud.
Burkert Andreas
Gritschneder Matthias
Heitsch Fabian
Naab Thorsten
Walch Stefanie
No associations
LandOfFree
Driving Turbulence and Triggering Star Formation by Ionizing Radiation 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 Driving Turbulence and Triggering Star Formation by Ionizing Radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving Turbulence and Triggering Star Formation by Ionizing Radiation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-589059