A new outburst of the yellow hypergiant star $\rho$ Cas
  Spectroscopic monitoring of the yellow hypergiant $\rho$ Cas revealed a new outburst in 2013, which is obvious from the development of TiO bands in the spectra. Also many atmospheric lines characteristic for a later spectral type appear. This spectroscopic outburst is in agreement with the photometric light curve, which displays a drop by about 0.6 mag during the same period. 
Anna Aret, Michaela Kraus, Indrek Kolka, Grigoris Maravelias
astro-ph.SR