Mass modelling from rotation curves

Details Mass modelling from rotation curves Mass modelling from rotation curves

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004bdmh.confe..89t&link_type=abstract

"Proceedings of "Baryons in Dark Matter Halos". Novigrad, Croatia, 5-9 Oct 2004. Editors: R. Dettmar, U. Klein, P. Salucci. Publ

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Scientific paper

We construct a generic mass model of a disk galaxy by combining two mass components, an exponential thin stellar disk and a pseudo-isothermal dark halo. We construct its generic rotation curve, with two free parameters linked to its shape and one to its amplitude, namely the halo core radius, the fractional amount of Dark Matter and the total mass at one disk scale lenght. We conduct a statystical analysis of the fitting procedure performed with the model on a family of rotation curves, and we conclude that an observed rotation curve fulfilling well defined quality requirements can be uniquely and properly decomposed in its dark and luminous components; through a suitable mass modelling together with a maximum-likelihood fitting method, in fact, the disentangling of the mass components is accomplished with a very high resolution.

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