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The Dynamics of Galaxy Pairs in a Cosmological Setting
Jorge Moreno, Asa F. L. Bluck, Sara L. Ellison +3
We use the Millennium Simulation, and an abundance-matching framework, to investigate the dynamical behaviour of galaxy pairs embedded in a cosmological context. Our main galaxy-pa…
Galaxy mergers on a moving mesh: a comparison with smoothed-particle hydrodynamics
Christopher C. Hayward, Paul Torrey, Volker Springel +2
Galaxy mergers have been investigated for decades using smoothed particle hydrodynamics (SPH), but recent work highlighting inaccuracies inherent in the traditional SPH technique c…
Empirical Constraints for the Magnitude and Composition of Galactic Winds
H. Jabran Zahid, Paul Torrey, Mark Vogelsberger +3
Galactic winds are a key physical mechanism for understanding galaxy formation and evolution, yet empirical and theoretical constraints for the character of winds are limited and d…
The Slow Flow Model of Dust Efflux in Local Star-Forming Galaxies
H. Jabran Zahid, Paul Torrey, Rolf Kudritzki +3
We develop a dust efflux model of radiation pressure acting on dust grains which successfully reproduces the relation between stellar mass, dust opacity and star formation rate obs…
Galaxy pairs in the Sloan Digital Sky Survey - VI. The orbital extent of enhanced star formation in interacting galaxies
David R. Patton, Paul Torrey, Sara L. Ellison +2
We use pair and environmental classifications of ~ 211,000 star-forming galaxies from the Sloan Digital Sky Survey, along with a suite of merger simulations, to investigate the enh…
A physical model for cosmological simulations of galaxy formation: multi-epoch validation
Paul Torrey, Mark Vogelsberger, Shy Genel +3
We present a multi-epoch analysis of the galaxy populations formed within the cosmological hydrodynamical simulations presented in Vogelsberger et al. (2013). These simulations exp…