384 citations · 1.5k across the 16 of their papers we have counts for
16 papers
The fate of high redshift massive compact galaxies in dense environments
Tobias Kaufmann, Lucio Mayer, Marcella Carollo +1
Massive compact galaxies seem to be more common at high redshift than in the local universe, especially in denser environments. To investigate the fate of such massive galaxies ide…
Orbiting Circum-galactic Gas as a Signature of Cosmological Accretion
Kyle R. Stewart, Tobias Kaufmann, James S. Bullock +4
We use cosmological SPH simulations to study the kinematic signatures of cool gas accretion onto a pair of well-resolved galaxy halos. Cold-flow streams and gas-rich mergers produc…
Recovering cores and cusps in dark matter haloes using mock velocity field observations
Rachel Kuzio de Naray, Tobias Kaufmann
We present mock DensePak Integral Field Unit (IFU) velocity fields, rotation curves, and halo fits for disc galaxies formed in spherical and triaxial cuspy dark matter haloes, and…
Observing the End of Cold Flow Accretion using Halo Absorption Systems
Kyle R. Stewart, Tobias Kaufmann, James S. Bullock +4
We use cosmological SPH 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…
Feedback and the Formation of Dwarf Galaxy Stellar Halos
Greg Stinson, Julianne Dalcanton, Tom Quinn +3
Stellar population studies show that low mass galaxies in all environments exhibit stellar halos that are older and more spherically distributed than the main body of the galaxy. I…
Redistributing hot gas around galaxies: do cool clouds signal a solution to the overcooling problem?
Tobias Kaufmann, James S. Bullock, Ariyeh H. Maller +2
We present a pair of high-resolution smoothed particle hydrodynamics (SPH) simulations that explore the evolution and cooling behavior of hot gas around Milky-Way size galaxies. Th…