¹²CO(1−0) line emission distribution toward clump number 6 from the list of Yonekura et al. (2005), in RA, Dec(J2000) coordinates, extracted from CNAV08. Contour lines go from 4.0 to 8.0 K in steps of 1 K. The 4.0 K contour delineates approximately the clump as defined in C¹⁸O. The grayscale goes from 0 to 10 K. The large square indicates the region observed in molecular lines with APEX (see Sect. 2.1). The triangle indicates the position of IRAS 10361-5530. The different symbols mark the location of candidate YSOs identified by CNAV08 and Ohlendorf et al. (2013): MSX sources (circles), 2MASS sources (crosses), Herschel sources (diamonds), and WISE sources (plus signs).