Dark matter in spiral galaxies. II. Galaxies with H I rotation curves

Journal Article · Wed Apr 01 04:00:00 EST 1987 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114366· OSTI ID:6167106

Kent, S M

Luminosity profiles and rotation curves for 16 galaxies are analyzed in order to study the light and mass distribution in each galaxy. Bulge/disk decompositions are discussed. It is observed that the ratio of the individual peak rotation velocities from halo and stellar components varies significantly among galaxies, and the ratio correlates with galaxy luminosity and/or morphological types. The rotation curves are also examined using Milgrom's (1983) modification of Newtonian dynamics. The data reveal that the calculated rotation curves correlate adequately with observed curves; however, the derived value for the critical acceleration varies by a factor of 5 between galaxies and a slightly declining rotation curve is predicted for most galaxies not always seen. 48 references.

• Research Organization: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA
• OSTI ID: 6167106
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 93; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR VELOCITY
CONFIGURATION
COSMIC RADIO SOURCES
DISTRIBUTION
GALAXIES
H1 REGIONS
MASS DISTRIBUTION
MATHEMATICAL MODELS
MORPHOLOGY
NONLUMINOUS MATTER
SPATIAL DISTRIBUTION
SPIRAL CONFIGURATION
VELOCITY