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2004MNRAS.355..694M - Mon. Not. R. Astron. Soc., 355, 694-712 (2004/December-2)
Multiphase galaxy formation: high-velocity clouds and the missing baryon problem.
MALLER A.H. and BULLOCK J.S.
Abstract (from CDS):
In this scenario, galaxy formation is fuelled by the infall of pressure-supported clouds. For Milky-Way-size systems, clouds of mass ∼5x106 M☉that formed or merged within the last several Gyr should still exist as a residual population in the halo, with a total mass in clouds of ∼2x1010 M☉. The baryonic mass of the Milky Way galaxy is explained naturally in this model, and is a factor of 2 smaller than would result in the standard treatment without feedback. We expect clouds in galactic haloes to be ∼1 kpc in size and to extend ∼150 kpc from galactic centres. The predicted properties of Milky Way clouds match well the observed radial velocity distribution, angular sizes, column densities and velocity widths of high-velocity clouds around our Galaxy. The clouds we predict are also of the type needed to explain high-ion absorption systems at z < 1, and the predicted covering factor around external galaxies is consistent with observations.
Abstract Copyright: 2004 RAS
Journal keyword(s): Galaxy: formation - cooling flows - galaxies: formation - intergalactic medium - quasars: absorption lines
Simbad objects: 4
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