The mass content of the Sculptor dwarf spheroidal galaxy

Andersen, J; Battaglia, G.; BlandHawthorn, J; Helmi, A.; Irwin, M.; Nordstrom, B; Tolstoy, E.

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The mass content of the Sculptor dwarf spheroidal galaxy

Authors: J Andersen
G. Battaglia
J BlandHawthorn
A. Helmi
M. Irwin
B Nordstrom
E. Tolstoy
Publication date: 15 July 2008
Publisher: 'Cambridge University Press (CUP)'
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Abstract

We present a new determination of the mass content of the Sculptor dwarf spheroidal galaxy, based on a novel approach which takes into account the two distinct stellar populations present in this galaxy. This method helps to partially break the well-known mass-anisotropy degeneracy present in the modelling of pressure-supported stellar systems.Comment: 6 pages, 3 figures. To appear in the proceedings of IAU Symposium 254 "The Galaxy disk in a cosmological context", Copenhagen, June 200