Journal of The Korean Astronomical Society (천문학회지)
- Volume 26 Issue 1
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- Pages.33-45
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- 1993
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
SURFACE PHOTOMETRY OF NGC4419
- CHOI JEONG TAE (Department of Earth Sciences, Pusan National University) ;
- ANN HONG BAE (Department of Earth Sciences, Pusan National University) ;
- LEE HYUNG MOK (Department of Earth Sciences, Pusan National University)
- Published : 1993.04.01
Abstract
We have conducted surface photometry of a spiral galaxy NGC4419, by making use of photographic plates in U, B, V and R-bands taken by 105cm Schmidt Camera at Kiso Observatory. Two dimensional surface brightness distributions as well as luminosity profiles along the major axis are examined in detail to decipher the morphological properties of the galaxy. Analysis of the color distributions of NGC4419 shows that B-V and U-B colors remain constant throughout the galaxy with a weak trend of blue bulge in B-V color. The blue bulge might indicate an active star formation in the nucleus of NGC4419. For a quantitative analysis of the luminosity distribution of NGC4419, the observed luminosity profiles are decomposed into bulge and disk components, assuming the bulge component to follow de Vaucouleurs