Simulations of Galactic Disks Including a Dark Baryonic Component

Details Simulations of Galactic Disks Including a Dark Baryonic Component Simulations of Galactic Disks Including a Dark Baryonic Component

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..396..459r&link_type=abstract

Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at

Astronomy and Astrophysics

Astronomy

Scientific paper

ΛCDM numerical simulations predict that the `missing baryons' reside in a warm-hot gas phase in the over-dense cosmic filaments. However, there are now several theoretical and observational arguments that support the fact that galactic disks may be more massive than usually thought, containing a substantial fraction of the `missing baryons'.
Hereafter, we present new N-body simulations of galactic disks, where the gas content has been multiplied by a factor 5. The stability of the disk is ensured by assuming that the interstellar medium is composed out of two partially coupled phases, a warm phase, corresponding the observed CO and H I gas and a cold collisionless phase corresponding to the unseen baryons.

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