Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-03-06
Mon.Not.Roy.Astron.Soc.378:41-47,2007
Astronomy and Astrophysics
Astrophysics
In press on MNRAS. 10 pages, 8 figures. The Mathematica code for the figures is available at: http://www.novicosmo.org/salucci
Scientific paper
10.1111/j.1365-2966.2007.11696.x
In the current LambdaCDM cosmological scenario, N-body simulations provide us with a Universal mass profile, and consequently a Universal equilibrium circular velocity of the virialized objects, as galaxies. In this paper we obtain, by combining kinematical data of their inner regions with global observational properties, the Universal Rotation Curve (URC) of disk galaxies and the corresponding mass distribution out to their virial radius. This curve extends the results of Paper I, concerning the inner luminous regions of Sb-Im spirals, out to the edge of the galaxy halos.
Gentile Gianfranco
Klein Ulf
Lapi Andrea
Salucci Paolo
Tonini Chiara
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