VizieR Online Data Catalog: S4G pipeline 4: multi-component decompositions (Salo+, 2015)

The Spitzer Survey of Stellar Structure in Galaxies (S4G, Sheth et al. 2010, J/PASP/122/1397) is a survey of 2352 galaxies observed in the mid-infrared (mid-IR) at 3.6 and 4.5um, wavelengths that are largely unaffected by internal extinction.

The data have been processed through Pipeline 1 (Munoz-Mateos et al. 2015ApJS..219....3M; MM15) which makes mosaics of the observed individual frames, Pipeline 2 (MM15) which makes masks of the foreground stars and image defects, and Pipeline 3 (MM15) which measures the basic photometric parameters like the galaxy magnitudes and concentration indices. In Pipeline 4 (P4), described in this study, we decompose the two-dimensional flux distributions of the images into several structural components using GALFIT (Peng et al. 2010AJ....139.2097P).

(3 data files).