| name | text |
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| deVaucouleurs | Also know as the r1/4 law, it describes the radial light profile of a typical elliptical galaxy. Defined as
I(r) = I0exp{-7.67[(r/re)1/4]}. An elliptical version of this profile is fit to every detected object, yielding the deV parameters. 
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| exponential model | The radial light distribution of a disk galaxy can often be fit by an exponential profile:
I(r) = I0exp(-1.68r/re)
The number 1.68 is chosen so that the
model radius is a half-light radius. An elliptical version of
this profile is fit to every detected object, yielding the exp parameters.
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| 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
two-dimensional image of each object in each band:
1. a pure deVaucouleurs profile, and
2. a pure exponential profile.
The best-fit model in the
r-band 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.
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| modelMag | The model magnitude. See magnitude, model.
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