Left: the locations of the YSO candidates superimposed on the WISE 3.4 μm emission. The black contours are from the 1.4 GHz radio continuum emission. Right: the locations of the YSO candidates superimposed on the map of the first moment of the ¹³CO emission in the interval of −8 to −1 km s⁻¹. The blue triangles are the YSO candidates of Class I, and the red circles are the YSO candidates of Class II.