Confirmation of the Luminous Blue Variable Status of MWC 930

Figure 4

Evolution of the spectrum of MWC 930 in 2010–2013 and comparison with spectra of normal stars. The spectra of BS 825 and 𝜙 Cas were obtained with a resolving power of ∼10000 at the Three College Observatory of the University of North Carolina at Greensboro. The intensity and wavelengths are in the same units as in Figure 2.