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arXiv · 0801.1505

The Tully-Fisher Zero Point Problem

Aaron A. Dutton·Frank C. van den Bosch·Stéphane Courteau
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Abstract

A 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.

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Aaron A. Dutton, Frank C. van den Bosch, Stéphane Courteau. 2008-01-09. The Tully-Fisher Zero Point Problem. https://arxiv.org/abs/0801.1505

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