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Interaction of massive stars with their surroundings

Published online by Cambridge University Press:  01 April 2008

Gerhard Hensler
Gerhard Hensler*
Affiliation:
Institute of Astronomy, University of Vienna, Tuerkenschanzstr. 17, 1180 Vienna, Austria email: hensler@astro.univie.ac.at
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Abstract

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Due to their short lifetimes but their enormous energy release in all stages of their lives massive stars are the major engines for the comic matter circuit. They affect not only their close environment but are also responsible to drive mass flows on galactic scales. Recent 2D models of radiation-driven and wind-blown Hii regions are summarized which explore the impact of massive stars to the interstellar medium but find surprisingly small energy transfer efficiencies while an observable Carbon self-enrichment in the Wolf-Rayet phase is detected in the warm ionized gas. Finally, the focus is set on state-of-the-art modelling of Hii regions and its present weaknesses with respect to uncertainties and simplifications but on a perspective of the requested art of their modelling in the 21st century.

Keywords

Stars: supergiants(ISM:)Hii regionsISM: kinematics and hydrodynamicsgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 309 - 315
Copyright
Copyright © International Astronomical Union 2008

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