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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 421696.0, MPI für Astronomie / Publikationen_mpia
The Tully-Fisher zero point problem
Authors:Dutton, A. A.; van den Bosch, F. C.; Courteau, S.
Language:English
Publisher:ASP
Place of Publication:San Francisco
Date of Publication (YYYY-MM-DD):2008
Title of Proceedings:Formation and Evolution of Galaxy Disks
Start Page:467
End Page:470
Title of Series:ASP Conf. Ser.
Volume (in Series):396
Name of Conference/Meeting:Astronomical Society of the Pacific Conference Series
Review Status:not specified
Audience:Experts Only
Abstract / Description: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. 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.
Comment of the Author/Creator:Date: 2008, October 1, 2008
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2008ASPC..396..467D [ID No:1]
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