The effects of the vision on the central opacity and the positions of the curves invers for the brightness of the assumed elliptic sphere

Abstract

The seeing effects on spherical symmetric Elliptical galaxy type EO following the r1/4- model has been calculated by using two type of the point spread function the Gaussian and Moffat functions . This study showed that the amount of central dimming Au;(0) for the seeing convolved Elliptical galaxy have an exponentially relationship with the reduced central dispersion value (a / re) of the point spread function , also the same proportion has been found for changeable positions r± for the seeing convolved surface brightness profiles . The relationships for the central dimming Au(0) and the changeable positions r± as a function of the reduced central dispersion have been found.

Keywords

• central opacity
• spherical symmetric elliptical galaxy