Figure adapted from Fig. 6 in Martins et al. (2005) showing the position of MWC 922 in the HR diagram (inside the yellow box) together with the envelopes of evolutionary paths for M_⋆ = 7, 9, 15, 20, 25, 40, and 60 M_⊙ stars taking into account the different codes studied by these authors. The horizontal dotted lines show the luminosity of MWC 922 adopting different values of d; the upper limit to the stellar mass deduced from the central mass inside of the rotating disk at different d is also indicated.