This project is conducted in Fall 2014.
I use GALFIT to model the galaxies to better detect the faint objects around them (especially GCs). Normally I use sérsic model or double sérsic model for inner part and outer part.
First I select the galaxies that I am interested
NGC4531, IC3540, IC3586, M89
Then I use models to fit them with some varying parameters (elongation, position angle, etc. ) , here's an example.
Left: IC3586 in g band. Right: Residue image