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Dark Matter and the Tully-Fisher Relations of Spiral and S0 Galaxies

Abstract:

We construct mass models of 28 S0-Sb galaxies. The models have an axisymmetric stellar component and a NFW dark halo and are constrained by observed KS-band photometry and stellar kinematics. The median dark halo virial mass is 1012.8 M⊙, and the median dark/total mass fraction is 20% within a sphere of radius r1/2, the intrinsic half-light radius, and 50% within R25. We compare the Tully-Fisher relations of the spirals and S0s in the sample and find that S0s are 0.5 mag fainter than spirals ...

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Publication status:
Published

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Publisher copy:
10.1063/1.3458559

Authors


Williams, MJ More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Volume:
1240
Pages:
431-432
Publication date:
2010
DOI:
EISSN:
1551-7616
ISSN:
0094-243X
URN:
uuid:c4ffbcae-0af9-4a75-9faf-b58492788b72
Source identifiers:
97330
Local pid:
pubs:97330
ISBN:
978-0-7354-0786-2

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