Star formation in a multi-phase ISM |
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Authors: | Stefan Harfst Christian Theis Gerhard Hensler |
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Institution: | (1) Institute for Theoretical Physics and Astrophysics, University Kiel, Germany |
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Abstract: | We present a 3d code for the dynamical evolution of a multi-phase interstellar medium (ISM) coupled to stars via star formation
(SF) and feedback processes. The multi-phase ISM consists of clouds (sticky particles) and diffuse gas (SPH): exchange of
matter, energy and momentum is achieved by drag (due to ram pressure) and condensation or evaporation processes. The cycle
of matter is completed by SF and feedback by SNe and PNe. A SF scheme based on a variable SF efficiency as proposed by Elmegreen
and Efremov (1997) is presented. For a Milky Way type galaxy we get a SF rate of ∼1 M⊙ yr-1 with an average SF efficiency of ∼5%.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Methods: N-body simulations Galaxies: evolution Galaxies: ISM |
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