The formation of molecular clouds and stars by turbulent compression and collapse
The goal of this work is to improve our understanding of the role of interstellar turbulence in star formation. In particular, the mechanism of turbulence energy injection, the turbulence forcing, is investigated with hydrodynamical simulations. In a systematic comparison, I study the two limiting c...
Gespeichert in:
| 1. Verfasser: | |
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| Dokumenttyp: | Buch/Monographie Hochschulschrift |
| Sprache: | Englisch |
| Veröffentlicht: |
2010
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| Schlagworte: | |
| Online-Zugang: | Resolving-System, kostenfrei, Volltext: http://nbn-resolving.de/urn:nbn:de:bsz:16-opus-107476 Langzeitarchivierung Nationalbibliothek, Volltext: http://d-nb.info/1004056419/34 Verlag, kostenfrei, Volltext: http://archiv.ub.uni-heidelberg.de/volltextserver/volltexte/2010/10747 
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| Verfasserangaben: | Christoph Federrath |
MARC
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| 245 | 1 | 4 | |a The formation of molecular clouds and stars by turbulent compression and collapse |c Christoph Federrath |
| 246 | 1 | |i abweichender Titel |a Übers. des Hauptsacht.: Die Entstehung von Molekülwolken und Sternen durch turbulente Kompression und Kollaps | |
| 246 | 3 | 3 | |a Die Entstehung von Molekülwolken und Sternen durch turbulente Kompression und Kollaps |
| 247 | 1 | 0 | |a Die Entstehung von Molekülwolken und Sternen durch turbulente Kompression und Kollaps |f Übers. des Hauptsacht. |
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| 520 | |a The goal of this work is to improve our understanding of the role of interstellar turbulence in star formation. In particular, the mechanism of turbulence energy injection, the turbulence forcing, is investigated with hydrodynamical simulations. In a systematic comparison, I study the two limiting cases of turbulence forcing: solenoidal (divergence-free) forcing and compressive (curl-free) forcing. I show that these two cases yield significantly different gas density and velocity statistics. The fractal structure of the gas and the turbulent density probability distribution function (PDF) are explored in detail. I find that compressive forcing yields a three times higher standard deviation of the roughly Gaussian density PDF. I discuss the impact of this result on analytic models of star formation ... | ||
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