arXiv:0912.4605 [astro-ph.CO]AbstractReferencesReviewsResources
Spin Flips: Variation in the Orientation of Dark Matter Halos over their Merger Histories
Published 2009-12-23Version 1
Semi-analytic models of galaxy formation typically form the spheroidal components of galaxies ("bulges"), solely through galactic major mergers. However, it is possible that non-merger events (e.g. a "fly-by" by a smaller halo) can perturb a galaxy--halo system sufficiently to form a bulge. We present a preliminary investigation into the frequency of major changes in halo and galaxy spin direction, which could be signatures of such events.
Comments: 2 pages, 2 figures, to appear in "Hunting for the Dark: The Hidden Side of Galaxy Formation", Malta, 19-23 Oct. 2009, eds. V.P. Debattista & C.C. Popescu, AIP Conf. Ser., in press
DOI: 10.1063/1.3458546
Categories: astro-ph.CO
Tags: journal article
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