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Pillars, Jets and Dynamical Features

Published online by Cambridge University Press:  27 April 2011

Matthias Gritschneder ,
Andreas Burkert ,
Thorsten Naab  and
Stefanie Walch
Matthias Gritschneder
Affiliation:
Kavli Institute for Astronomy and Astrophysics, Peking University, 100871 Beijing, China email: [email protected] Universitäts-Sternwarte München, 81679 München, Germany
Andreas Burkert
Affiliation:
Universitäts-Sternwarte München, 81679 München, Germany Max Planck Institut für Extraterrestrische Physik, 85748 Garching bei München, Germany
Thorsten Naab
Affiliation:
Universitäts-Sternwarte München, 81679 München, Germany Max Planck Institut für Astrophysik, 85740 Garching bei München, Germany
Stefanie Walch
Affiliation:
School of Physics & Astronomy, Cardiff University, Cardiff CF24 3AA, United Kingdom
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Abstract

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We present high resolution simulations on the impact of ionizing radiation on turbulent molecular clouds. The combination of hydrodynamics, gravitational forces and ionization in the tree-SPH code iVINE naturally leads to the formation of elongated filaments and clumps, which are in excellent agreement with the pillars observed around HII regions. Including gravity the formation of a second generation of low-mass stars with surrounding protostellar disks is triggered at the tips of the pillars, as also observed. A parameter study allows us to determine the physical conditions under which irregular structures form and whether they resemble large pillars or a system of small, isolated globules.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S270: Computational Star Formation , May 2010 , pp. 319 - 322
Copyright
Copyright © International Astronomical Union 2011

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