Hertzsprung-Russel diagram for 1987A-like SN progenitors. The evolutionary path for each object (colored solid lines) has been computed with the STARS code (Eldridge & Tout 2004), assuming the progenitor mass from the modeling (ejecta mass plus 2 M_⊙ forming the central compact object) and LMC metallicity (Z = 0.008, Glatt et al. 2010). The paths for masses ranging between 8 and 200 M_⊙ are also shown (dotted lines). The position of each progenitor at the moment of the explosion (colored circles) has been obtained by assuming the progenitor to be a black body emitting with the luminosity of the last epoch of its evolutionary path and having a radius (colored dashed lines) equal to our model estimate. All the 1987A-like SN progenitors belong to the blue-white (B) spectral type as the progenitor of SN 1987A (Woosley 1988). The 150   R_⊙ line is shown in the plot for comparison, as well as the position of a well-know BSG, β Orionis (Stewart et al. 2009).