Dust and gas observations. Left: region covered by the IRAM observations (cyan box) overlaid on the Herschel SPIRE 250 μm map that illustrates the filamentary structure of the cloud and the distribution of bright IRAS sources (white circles). Middle: ¹³CO map revealing dense cores roughly related to the IRAS sources. The location of the WISE sources (Class I) are marked by red stars. The location of the nine dense cores listed in Table 1 is drawn with white squares. Right: core emission (T_MB) observed in the ¹³CO (black) and ¹²CO (dashed red)J=1–0 transitions. A scaling factor of 0.5 has been applied to the ¹²CO line intensity.