X-ray, Ly-alpha and H-alpha Emission from Simulated Disk Galaxies
Astrophysics
2009-11-07 v1
Abstract
The X-ray properties of the haloes of disk galaxies formed in fully cosmological, hydro/gravity simulations are discussed. The results are found to be consistent with observational X-ray detections and upper limits. Disk galaxy haloes are predicted to be about an order of magnitude brighter in soft X-rays at z~1 than at z=0. The Ly-alpha and H-alpha surface brightness of an edge-on, Milky Way like model galaxy has been determined. The emission is found to be quite extended, with a scale height of about 600 pc, neglecting extinction corrections.
Cite
@article{arxiv.astro-ph/0210514,
title = {X-ray, Ly-alpha and H-alpha Emission from Simulated Disk Galaxies},
author = {Jesper Sommer-Larsen and Sune Toft and Jesper Rasmussen and Kristian Pedersen and Martin Gotz and Laura Portinari},
journal= {arXiv preprint arXiv:astro-ph/0210514},
year = {2009}
}
Comments
4 pages, 2 figures, to appear in the proceedings of "The Evoution of Galaxies. III. From simple approaches to self-consistent models" (Kiel, July 2002), G. Hensler et al. (eds.)