Disk-Halo Interaction - I. Three-Dimensional Evolution of the Galactic Disk
Abstract
The results of a three-dimensional model for disk-halo interaction are presented here. The model considers explicitly the input of energy and mass by isolated a nd correlated supernovae in the disk. Once disrupted by the explosions, the disk never returns to its initial state. Instead it approaches a state where a thin HI disk is formed in the Galactic plane overlayed by thick HI and HII gas disk w ith scale heights of 500 pc and of 1 to 1.5 kpc, respectively. The upper parts o f the thick HII disk (the diffuse ionized medium) act as a disk-halo interface a nd its formation and stability are directly correlated to the supernova rate per unit area in the simulated disk.
Keywords
Cite
@article{arxiv.astro-ph/0001315,
title = {Disk-Halo Interaction - I. Three-Dimensional Evolution of the Galactic Disk},
author = {Miguel A. de Avillez},
journal= {arXiv preprint arXiv:astro-ph/0001315},
year = {2008}
}
Comments
19 pages, 18 figures; to appear in Monthly Notices of Royal Astronomical Society