SILCC-ZOOM: The early impact of ionizing radiation on forming molecular clouds
| Autor: | S. Haid, T. Naab, Stefanie Walch, F. Dinnbier, Richard Wünsch, Daniel Seifried |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
010308 nuclear & particles physics Star formation Molecular cloud FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Radiation Kinetic energy Astrophysics - Astrophysics of Galaxies 01 natural sciences Ionizing radiation Stars Star cluster 13. Climate action Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Thermal 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society |
| DOI: | 10.48550/arxiv.1810.08210 |
| Popis: | As part of the SILCC-ZOOM project we present our first sub-parsec resolution radiation-hydrodynamic simulations of two molecular clouds self-consistently forming from a turbulent, multi-phase ISM. The clouds have similar initial masses of few 10$^4$ M$_{\odot}$, escape velocities of ~5 km s$^{-1}$, and a similar initial energy budget. We follow the formation of star clusters with a sink based model and the impact of radiation from individual massive stars with the tree-based radiation transfer module TreeRay. Photo-ionizing radiation is coupled to a chemical network to follow gas heating, cooling and molecule formation and dissociation. For the first 3 Myr of cloud evolution we find that the overall star formation effciency is considerably reduced by a factor of ~4 to global cloud values of < 10 % as the mass accretion of sinks that host massive stars is terminated after |
| Databáze: | OpenAIRE |
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