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Title: Distribution of dark and luminous mass in galaxies

A uniform scale relation between dark and baryonic matter is observed in galaxies over a broad range of physical parameter space. The ratio of dark to baryonic mass is found to increase proportionately with radial distance in observational data spanning a wide dynamic range of morphological type, rotation velocity, radius, surface density, and mass. This close relation between dark and baryonic mass poses a fine-tuning problem for galaxy formation models. Such a uniform scale relation, extending from the inner galactic region to the outermost kinematic data point, may play a role in clarifying the dark matter phenomenon.
Authors:
 [1] ;  [2]
  1. University of Louisville, 2301 South Third Street, Louisville, KY 40292 (United States)
  2. Department of Physics and Astronomy, University of Louisville, 2301 South Third Street, Louisville, KY 40292 (United States)
Publication Date:
OSTI Identifier:
22340235
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (New York, N.Y. Online); Journal Volume: 147; Journal Issue: 6; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BARYONS; DENSITY; DISTANCE; DISTRIBUTION; GALAXIES; LUMINOSITY; MASS; NONLUMINOUS MATTER; ROTATION; SPACE; SURFACES; VELOCITY