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arXiv · 0902.1500

A Shared Tully-Fisher Relation for Spiral and S0 Galaxies

Michael J. Williams·Martin Bureau·Michele Cappellari
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Abstract

We measure the Tully-Fisher relations of 14 lenticular galaxies (S0s) and 14 spirals. We use two measures of rotational velocity. One is derived directly from observed spatially-resolved stellar kinematics and the other from the circular velocities of mass models that include a dark halo and whose parameters are constrained by detailed kinematic modelling. Contrary to the naive expectations of theories of S0 formation, we find no significant difference between the Tully-Fisher relations of the two samples when plotted as functions of both brightness and stellar mass.

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Michael J. Williams, Martin Bureau, Michele Cappellari. 2009-03-26. A Shared Tully-Fisher Relation for Spiral and S0 Galaxies. https://arxiv.org/abs/0902.1500

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