PDS was used to get the structure of two barred spiral galaxies NGC 1313 and NGC 1365. The result shows that NGC 1365 has both a deep spheroidal component and an exponential disk, but NGC 1313 has only an prominent exponential component. The luminosity profiles indicate that KGC 1313 is in type I and NGC 1365 belongs to type II. The length scales ( α − 1 ) were derived from the exponential luminosity distributions as 1.64 kpc for NGC 1313 and 2.49kpc for KGC 1365.

ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. DESCRIPTION OF NGC 1313 AND NGC 1365
Ⅲ. REDUCTIONS
Ⅳ. ISOPHOTES
Ⅴ. LUMINOSITY PROFILES
Ⅵ. INTEGRATION OF THE LUMINOSITY DISTRIBUTION
Ⅶ. EXPONENTIAL DISK
Ⅷ. DISCUSSION
REFERENCES

• CHUN MUN-SUK(Department of Astronmy and Meteorology, Yonsei University)