Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.119..195k&link_type=abstract
(IAU, Asian-Pacific Regional Meeting, 3rd, Kyoto, Japan, Sept. 30-Oct. 5, 1984) Astrophysics and Space Science (ISSN 0004-640X),
Astronomy and Astrophysics
Astrophysics
1
Brightness Distribution, Galactic Structure, Physical Properties, Spiral Galaxies, Correlation, Galactic Evolution, Morphology
Scientific paper
The relationship between the physical parameters and morphology of four late-type spiral galaxies (NGC 1313, 1365, 6946, and 7793) is studied. The nuclear effective radius, effective surface brightness, disk to bulge ratio, central surface brightness, and scale length are calculated from surface brightness distributions of the galaxies. The comparison of the parameters with morphological type reveals: (1) the nuclear effective radius decreases linearly with increasing morphological type value, T; (2) the central surface brightness is brighter for a larger scale length, and type II galaxies are brighter than type I; and (3) the disk to bulge ratio correlates with T which is constant for T less than or equal to one or two and then increases sharply.
Chun Moon-Suk
Kim Sung-Won
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