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Fig. 4

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Panel a): A (UB) ~ (BV) diagram. The solid line with pluses shows the intrinsic color-indices of Galactic supergiants (Straizhys 1977). Color-indices of the objects from Zaritsky et al. (2004) are shown by filled circles and those from Gummersbach et al. (1995) are shown by open squares. The line with an arrowhead represents an interstellar reddening vector for E(UB)/E(BV) = 0.65, which is typical for both the Milky Way and the LMC. Panel b): A (JH) ~ (HK) diagram for the known supergiants with the B[e] phenomenon in the LMC (pluses) and the objects from Table 1 (the same symbols as in panel a). The solid line in the lower left corner represents intrinsic colors of B–type supergiants; the line with an arrowhead represents an interstellar reddening vector for E(JH)/E(HK) = 2.5 (Wegner 1994).

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