4.2.2. M33

In M33, the sample of putative LBV candidates [6,95] served also as a starting point for a more detailed investigation of the individual objects. Optical [97,99,141], and infrared [138] spectroscopic studies revealed so far a total of ten possible B[e]SGs. They are listed in Table 7. Combined with the available information about their infrared colors, only two objects can currently be considered as confirmed B[e]SGs, six need further clarification, and two objects appear to be misclassified.
