Journal article
ORBITING CIRCUMGALACTIC GAS AS A SIGNATURE OF COSMOLOGICAL ACCRETION
Abstract
We use cosmological smoothed particle hydrodynamic simulations to study the kinematic signatures of cool gas accretion onto a pair of well-resolved galaxy halos. We find that cold-flow streams and gas-rich mergers produce a circumgalactic component of cool gas that generally orbits with high angular momentum about the galaxy halo before falling in to build the disk. This signature of cosmological accretion should be observable using …
Authors
Stewart KR; Kaufmann T; Bullock JS; Barton EJ; Maller AH; Diemand J; Wadsley J
Journal
The Astrophysical Journal, Vol. 738, No. 1,
Publisher
American Astronomical Society
Publication Date
September 1, 2011
DOI
10.1088/0004-637x/738/1/39
ISSN
0004-637X