Journal article
OBSERVING THE END OF COLD FLOW ACCRETION USING HALO ABSORPTION SYSTEMS
Abstract
We use cosmological smoothed particle hydrodynamic simulations to study the cool, accreted gas in two Milky Way size galaxies through cosmic time to z = 0. We find that gas from mergers and cold flow accretion results in significant amounts of cool gas in galaxy halos. This cool circum-galactic component drops precipitously once the galaxies cross the critical mass to form stable shocks, Mvir = Msh ∼ 1012 M☉. Before reaching Msh, the galaxies …
Authors
Stewart KR; Kaufmann T; Bullock JS; Barton EJ; Maller AH; Diemand J; Wadsley J
Journal
The Astrophysical Journal Letters, Vol. 735, No. 1,
Publisher
American Astronomical Society
Publication Date
July 1, 2011
DOI
10.1088/2041-8205/735/1/l1
ISSN
2041-8205