Open symbols represent positions of the stars in our LMC sample in the HR diagram. Effective temperatures and luminosities are taken from the literature where available, or estimated using spectral types and published photometry. As many of these stars are photometric and spectroscopic variables their positions in the HR diagram are illustrative. As an extreme example the positions of the LBV R 71 are indicated (data from Mehner et al. 2013) joined by dotted lines. For convenience we indicate the position of the candidate hypervelocity star Sk-67 2. We also indicate the position of the zero age main sequence (left, labelled with initial masses, tracks from Brott et al. 2011; and Köhler et al. 2015) and the approximate location of the Humphreys-Davidson limit.
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