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Dark matter in elliptical galaxies: prospects for WFOS/TMT

Published online by Cambridge University Press:  17 May 2006

Patrick Côté ,
Eric W. Peng  and
Jarle Brinchmann
Patrick Côté
Affiliation:
Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 W. Saanich Road, Victoria, BC V9E 2E7, Canada email: Patrick.Cote@nrc-cnrc.gc.ca, Eric.Peng@nrc-cnrc.gc.ca
Eric W. Peng
Affiliation:
Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 W. Saanich Road, Victoria, BC V9E 2E7, Canada email: Patrick.Cote@nrc-cnrc.gc.ca, Eric.Peng@nrc-cnrc.gc.ca
Jarle Brinchmann
Affiliation:
Centro de Astrofisica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: jarle@astro.up.pt
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Abstract

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The amount and spatial distribution of dark matter in elliptical galaxies are poorly known, despite extensive observations with multi-object spectrographs on 4-10m-class telescopes. We examine the prospects for measuring the structure of dark matter halos in elliptical galaxies — and the orbital properties of their planetary nebula and globular cluster systems — from radial velocity measurements made with WFOS, a wide-field optical spectrograph operating on the Thirty Meter Telescope (TMT).

Keywords

instrumentation: spectrographs — techniques: radial velocities — planetary nebulae — galaxies: star clusters — cosmology: dark matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S232: Scientific Requirements for Extremely Large Telescopes , November 2005 , pp. 187 - 191
Copyright
2006 International Astronomical Union