name  text 

deVaucouleurs  Also know as the r^{1/4} law, it describes the radial light profile of a typical elliptical galaxy. Defined as I(r) = I_{0}exp{7.67[(r/r_{e})^{1/4}]}. An elliptical version of this profile is fit to every detected object, yielding the deV parameters.


exponential model  The radial light distribution of a disk galaxy can often be fit by an exponential profile:
I(r) = I_{0}exp(1.68r/r_{e})
The number 1.68 is chosen so that the
model radius is a halflight radius. An elliptical version of
this profile is fit to every detected object, yielding the exp parameters.


magnitude, model  Just as the PSF magnitudes are optimal measures of the fluxes of
stars, the optimal measure of the flux of a galaxy would use a matched galaxy
model. With this in mind, the code fits two models to the
twodimensional image of each object in each band:
1. a pure deVaucouleurs profile, and
2. a pure exponential profile.
The bestfit model in the
rband is fit to the other four bands; the results are stored as the
model magnitudes.
Details, including a very important warning, can be found here.


modelMag  The model magnitude. See magnitude, model.
