The Tully-Fisher Zero Point Problem

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dc.creatorDutton, Aaron A.
dc.creatorBosch, Frank C. van den
dc.creatorCourteau, Stéphane
dc.date2008-01-09
dc.date.accessioned2026-07-07T08:53:36Z
dc.date.available2026-07-07T08:53:36Z
dc.descriptionA long standing problem for hierarchical disk galaxy formation models has been the simultaneous matching of the zero point of the Tully-Fisher relation and the galaxy luminosity function (LF). We illustrate this problem for a typical disk galaxy and discuss three solutions: low stellar mass-to-light ratios, low initial dark halo concentrations, and no halo contraction. We speculate that halo contraction may be reversed through a combination of mass ejection through feedback and angular momentum exchange brought about by dynamical friction between baryons and dark matter during the disk formation process.
dc.description4 pages, 1 figure, to appear in proceedings of "Formation and Evolution of Galaxy Disks", Rome, October 2007, Eds. J.G. Funes, S.J. and E.M. Corsini
dc.identifierhttps://arxiv.org/abs/0801.1505
dc.identifierhttp://arxiv.org/abs/0801.1505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145679
dc.subjectAstrophysics
dc.titleThe Tully-Fisher Zero Point Problem
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