The Universal Rotation Curve of Spiral Galaxies. 2. The Dark Matter Distribution out to the Virial Radius
Mar, 2007
10 pages
Published in:
- Mon.Not.Roy.Astron.Soc. 378 (2007) 41-47
e-Print:
- astro-ph/0703115 [astro-ph]
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Abstract: (arXiv)
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.Note:
- In press on MNRAS. 10 pages, 8 figures. The Mathematica code for the figures is available at: http://www.novicosmo.org/salucci.asp Corrected typos
- galaxies: formation
- galaxies: haloes
- galaxies: kinematics and dynamics
- dark matter
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