DR4 Help
 Archive Intro
 Table Descriptions
 Schema Browser
 Introduction to SQL
 Form Query User Guide
 Query Limits
 How To
 SkyServer Sites
 SkyServer Traffic Page
 Web Browsers
 Site News
 Contact Help Desk

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.