The mass distribution in Spiral galaxies

Abstract

In the past years a wealth of observations has allowed us to unravel the structural properties of the Dark and Luminous mass distribution in spirals. As result, it has been found that their rotation curves follow, out their virial radius, an Universal function (URC) made by two terms: one due to the gravitational potential of a Freeman stellar disk and the other due to that of a dark halo. The importance of the latter is found to decrease with galaxy mass. Individual objects reveal in detail that dark halos have a density core, whose size correlates with its central value. These properties will guide $\Lambda$CDM Cosmology to evolve to match the challenge that observations presently pose.

10 pages, Invited review for IAU Symposium 244, Dark Galaxies & Lost Baryons. Typos corrected. Comments are welcome

References in corpus (21)

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• Cold collapse and the core catastrophe
• Concentrations of Dark Halos from their Assembly Histories
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• Observational and Theoretical Constraints on Singular Dark Matter Halos
• The cored distribution of dark matter in spiral galaxies
• Dark Matter Scaling Relations
• The Universal Rotation Curve of Spiral Galaxies. II The Dark Matter Distribution out to the Virial Radius
• High-Resolution Measurements of the Halos of Four Dark Matter-Dominated Galaxies: Deviations from a Universal Density Profile
• New Relationships between Galaxy Properties and Host Halo Mass, and the Role of Feedbacks in Galaxy Formation
• Dwarf Galaxy Rotation Curves and the Core Problem of Dark Matter Halos
• Measuring non-axisymmetry in spiral galaxies
• NGC 3741: dark halo profile from the most extended rotation curve
• A High-Resolution Rotation Curve of NGC 6822: A Test-case for Cold Dark Matter
• The mass distribution in early-type disk galaxies: declining rotation curves and correlations with optical properties
• Angular Momentum Transfer in Dark Matter Halos: Erasing the Cusp
• The dwarf galaxy DDO 47 as a dark matter laboratory: testing cusps hiding in triaxial halos
• Template Rotation Curves for Disk Galaxies
• Cores of Dark Matter Halos Correlate with Disk Scale Lengths
• The Radial Tully-Fisher relation for spiral galaxies I
• The mass distribution in the innermost regions of Spiral Galaxies

Cited by in corpus (4)

• Unified Dark Matter Scalar Field Models
• Vortex Structures in a Rotating BEC Dark Matter Component
• Comparison of weak lensing by NFW and Einasto halos and systematic errors
• On the rotation curves for axially symmetric disk solutions of the Vlasov-Poisson system