Dark matter in spiral galaxies

Journal Article · Tue May 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168739· OSTI ID:6690290

Persic, M; Salucci, P ^[1]

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1. Osservatorio Astronomico, Trieste (Italy) Durham Univ. (England)

The Tully-Fisher relation is used to probe dark matter (DM) in the optical regions of spiral galaxies. By establishing it at several different isophotal radii in an appropriate sample of 58 galaxies with good B-band photometry and rotation curves, it is shown that some of its attributes (such as scatter, residuals, nonlinearity, and bias) dramatically decrease moving from the disk edge inward. This behavior challenges any mass model which assumes no DM or a luminosity-independent DM mass fraction interior to the optical radius of spiral galaxies. 58 refs.

• OSTI ID: 6690290
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 355; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
GALAXIES
MASS DISTRIBUTION
MATHEMATICAL MODELS
MORPHOLOGY
NONLUMINOUS MATTER
PHOTOMETRY
RADIATIONS
SPATIAL DISTRIBUTION
SPIRAL CONFIGURATION
VISIBLE RADIATION