The Dark Matter Distribution for the SINGS Galaxies

Details The Dark Matter Distribution for the SINGS Galaxies The Dark Matter Distribution for the SINGS Galaxies

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99s.142n&link_type=abstract

Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.142

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Scientific paper

Results obtained from a study of the mass distribution of 10 spirals galaxies from the SINGS sample are presented. The H-alpha rotation curves were obtained using Fabry-Perot techniques. For each galaxy, the high resolution H-alpha rotation curves derived from the velocity fields are combined with low-resolution H i data. The goal of the study is to determine accurately the inner slope of the rotation curves, which strongly constrains the parameters of the mass models. Two well-known halo density profiles are compared: dark halos with a central density cusp (NFWprofile), and a pseudo-isothermal sphere profile, which is much flatter in the centre.

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