On the interrelation between the surface photometric parameters and the internal velocities of galaxies

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167580· OSTI ID:5509306

Kodaira, K ^[1]

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1. National Astronomical Observatory, Mitaka (Japan)

The interrelations between the surface photometric parameters and the internal velocities are explored by means of the principal component analysis and the regression line analysis of homogeneous data for 18 elliptical and 28 spiral galaxies of moderate inclinations in the Virgo Cluster. Extremely tight correlations are found both for ellipticals and spirals, between the visual magnitude and a combined parameter involving the internal velocity and the isophotal diameter of galaxies. The physical meaning of the parameter is inferred to be a sort of phase-space density related to the basic structure of galaxies, and its empirical behavior in the diameter versus surface brightness diagram is briefly described. 26 refs.

• OSTI ID: 5509306
• Journal Information: Astrophysical Journal; (USA), Vol. 342; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
VELOCITY
ASTROPHYSICS
BRIGHTNESS
CORRELATIONS
EIGENVECTORS
ELLIPTICAL CONFIGURATION
GALAXY CLUSTERS
MORPHOLOGY
PHOTOMETRY
SPIRAL CONFIGURATION
CONFIGURATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
640105* - Astrophysics & Cosmology- Galaxies