Distribution of dark and luminous mass in galaxies

Journal Article · Sun Jun 01 00:00:00 EDT 2014 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/147/6/135· OSTI ID:22340235

Lovas, Stephen ^[1]

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1. University of Louisville, 2301 South Third Street, Louisville, KY 40292 (United States)

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.

• OSTI ID: 22340235
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 147, Issue 6; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BARYONS
DENSITY
DISTANCE
DISTRIBUTION
GALAXIES
LUMINOSITY
MASS
NONLUMINOUS MATTER
ROTATION
SPACE
SURFACES
VELOCITY