LSST: AFUV prior

DATA

• Salim+18 , GALEX-SDSS-WISE Legacy Catalog (GSWLC),
• SDSS DR12 Alam+15 (Petrosian radii and magnitudes)

    afuv_calc=(col-(b1*sb_u)-b2)/((a1*sb_u)+a2)

final equation for redshift bin 0.01-0.29 (median 0.08):  

 AFUV [mag] =((u-r)-(0.210*uSB)--3.851)/((-0.003*uSB)+0.334)