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Dark Matter Distribution in Nearby Galaxies

Published online by Cambridge University Press:  26 May 2016

Olivia Garrido ,
Philippe Amram ,
Claude Carignan ,
Sébastien Blais-Ouellette ,
Michel Marcelin  and
Delphine Russeil
Olivia Garrido
Affiliation:
Observatoire de Marseille, France
Philippe Amram
Affiliation:
Observatoire de Marseille, France
Claude Carignan
Affiliation:
Université de Montréal, Canada
Sébastien Blais-Ouellette
Affiliation:
Observatoire de Marseille, France Université de Montréal, Canada California Institute of Technology, USA
Michel Marcelin
Affiliation:
Observatoire de Marseille, France
Delphine Russeil
Affiliation:
Observatoire de Marseille, France

Abstract

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We present results obtained from a study of the mass distribution of 24 galaxies observed using Fabry-Pérot techniques, as part of the GHASP survey (see Russeil et al., this meeting). For each galaxy, we combined high resolution Hα rotation curves derived from 2-D velocity fields, with low resolution HI data, in order to determine accurately the inner slope of the rotation curve which strongly constrains the distribution of matter. Our work suggests the existence of a constant density core in the center of the dark halos.

Type
Part 9: Disks
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 327 - 328
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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