From Large to Small Scales: Global Models of the ISM

Authors: de Avillez, Miguel¹; Breitschwerdt, Dieter²

Source: Astrophysics and Space Science, Volume 289, Numbers 3-4, February 2004 , pp. 479-488(10)

Publisher: Springer

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Abstract:

We review large scale modelling of the ISM with emphasis on the importance to include the disk-halo-disk duty cycle and to use a dynamical refinement of the grid (in regions where steep variations of density and pressure occur) for a realistic modelling of the ISM. We also discuss the necessity of convergence of the simulation results by comparing 0.625, 1.25 and 2.5 pc resolution simulations and show that a minimum grid resolution of 1.25 pc is required for quantitatively reliable results, as there is a rapid convergence for Dgr

1.1 pc.

Keywords: Hydrodynamics; ISM: general; ISM: structure; ISM: kinematics and dynamics; galaxies: halos; Galaxy: disk

Document Type: Research article

DOI: http://dx.doi.org/10.1023/B:ASTR.0000014981.50094.8f

Affiliations: 1: Department of Mathematics, University of Évora, R. Romão Ramalho 59, 7000, Evora, Portugal, Email: mavillez@galaxy.lca.uevora.pt 2: Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, Postfach 1312, 85741, Garching, Germany, Email: breitsch@mpe.mpg.de

Publication date: 2004-02-01