Sersic fits

For each object we provide one-component Sersic fits to its radial profile. The Appendix of Blanton et al. (2003) provides a full description of our procedure for doing so.

The results are stored in:

$VAGC_REDUX/sersic/sersic_catalog.fits

which has the following columns:

SERSIC_AMP[5]: The best fit to the variable "A" in Equation (1) of Blanton et al. (2003), for each band. (nanomaggies/arcsec^2)
SERSIC_R0[5]: The best fit to the variable "r_0" in Equation (1) of Blanton et al. (2003), for each band. (arcsec)
SERSIC_N[5]: The best fit to the Sersic index "n" in Equation (1) of Blanton et al. (2003), for each band.
SERSIC_CHI2[5]: chi^2 for the fit in each band
SERSIC_COVAR[2,2,5]: Covariance matrix between SERSIC_R0 and SERSIC_N in the fit for each band.
SERSIC_NPROF[5]: The number of profMean annuli used in the fit (see documentation of the radial profile annuli at the SDSS web site)
SERSIC_FLUX[5]: Flux in best fit model in each band (nanomaggies)
SERSIC_R50[5]: 50% light radius of best fit model in each band (arcsec)
SERSIC_R90[5]: 90% light radius of best fit model in each band (arcsec)
SERSIC_PETROFLUX[5]: Flux if SDSS Petrosian flux was measured on best fit model in each band (nanomaggies)
SERSIC_PETROR50[5]: 50% light radius if SDSS Petrosian measurement was made on best fit model in each band (arcsec)
SERSIC_PETROR90[5]: 90% light radius if SDSS Petrosian measurement was made on best fit model in each band (arcsec)
SERSIC_CANON_AMP[5]: The best fit to the variable "A" in Equation (1) of Blanton et al. (2003), for each band, using SERSIC_R0 and SERSIC_N fixed at their best fit values for the i-band. (nanomaggies/arcsec^2)
SERSIC_CANONFLUX[5]: Flux in best fit in each band using using SERSIC_R0 and SERSIC_N fixed at their best fit values for the i-band. (nanomaggies)
SERSIC_CANONPETROFLUX[5]: Petrosian flux in best fit in each band using using SERSIC_R0 and SERSIC_N fixed at their best fit values for the i-band. (nanomaggies)

NYU Value-Added Galaxy Catalog