Star formation in a multi-phase ISM

Autor(en)

Stefan Harfst, Christian Theis, Gerhard Hensler

Abstrakt

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%.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Christian-Albrechts-Universität zu Kiel

Journal

Astrophysics and Space Science

Band

284

Seiten

869-872

Anzahl der Seiten

4

ISSN

0004-640X

Publikationsdatum

2003

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8f8dbf1d-c1f8-484a-918c-2f1da21b818c