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We study the surface brightness profiles of disc galaxies in the 3.6 micronimages from the Spitzer Survey of Stellar Structure in Galaxies (S4G) andK_s-band images from the Near Infrared S0-Sa galaxy Survey (NIRS0S). Weparticularly connect properties of single exponential (type I), downbendingdouble exponential (type II), and upbending double exponential (type III) discprofile types, to structural components of galaxies by using detailedmorphological classifications, and size measurements of rings and lenses. Wealso study how the local environment of the galaxies affects the profile typesby calculating parameters describing the environmental density and the tidalinteraction strength. We find that in majority of type II profiles the breakradius is connected with structural components such as rings, lenses, andspirals. The exponential disc sections of all three profile types, whenconsidered separately, follow the disc scaling relations. However, the outerdiscs of type II, and the inner discs of type III, are similar in scalelengthto the single exponential discs. Although the different profile types havesimilar mean environmental parameters, the scalelengths of the type IIIprofiles show a positive correlation with the tidal interaction strength.

Morphology and environment of galaxies with disc breaks in the S4G and NIRS0S