EPoS Contribution
EPoS Contribution
The Fate of Ionization Triggered Stars

Matthias Gritschneder
USM, Muenchen, DE
We present a novel implementation of ionizing radiation into the SPH code SEREN. By using a Monte Carlo ray-shooting technique we are able to achieve a scaling which is independent of the number of sources. The implementation is fully parallel and scales with the number of CPUs. The computational effort is proportional to the ionized volume. We present first simulations on the evolution of an O/B association (see figure) and continue to investigate the dynamics of ionization triggered stars and the formation of proplyds. In addition, we invert the ray tracing scheme to track the radiation impinging onto a molecular cloud core. This enables us to investigate the influence of the ionization state inside a cloud core onto the final collapse properties such as fragmentation and multiplicity. We present first results on the modified collapse timescale.
Caption: Visualization of the density distribution around 4 (symmetrically placed) O stars t=100kyr after their ignition.
Collaborators:
A. Burkert, USM, Germany
D. Lin, UCSC, USA
Key publication

Suggested Sessions: Massive Star Formation and Feedback