Mathematics – Logic
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.6901n&link_type=abstract
American Astronomical Society, AAS Meeting #211, #69.01; Bulletin of the American Astronomical Society, Vol. 39, p.859
Mathematics
Logic
Scientific paper
We have performed a set of high resolution SPH simulations of multiple galaxy mergers in a cosmological context using Gadget. Previous work has indicated that binary mergers of gas-rich spiral galaxies produce elliptical galaxies that closely resemble the SAURON "fast-rotators" in many respects, including their two-dimensional kinematics. However, the origin of slowly rotating, nearly spherical galaxies seen by the SAURON survey remains mysterious. In order to discover the physical processes and merger histories that are the keys to producing slow rotators, we consider both simple, idealized initial conditions (e.g. successive minor mergers of a given mass ratio) and initial conditions taken from lower resolution hydrodynamic cosmological simulations. The realistic set of initial conditions take into account the cosmological context in which galaxy formation takes place, including ongoing gas infall, while the idealized initial conditions provide essential intuition for interpreting the more realistic initial conditions.
Cox Theodore J.
Dekel Avishai
Jonsson Patrik
Novak Gregory
Primack Joel R.
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