The mysterious eruption of V838 Mon

  title={The mysterious eruption of V838 Mon},
  author={U. Munari and A.Henden and Seiichiro Kiyota and David Laney and Freddy Marang and Toma{\vz} Zwitter and Romano L. M. Corradi and Silvano Desidera and P. M. Marrese and Enrico Giro and Federico Boschi and M. B. Schwartz},
  journal={Astronomy and Astrophysics},
V838 Mon is marking one of the most mysterious stellar outbursts on record. The spectral energy distribution of the progenitor resembles an under-luminous F main sequence star (at V =1 5:6 mag), that erupted into a cool supergiant following a complex and multi-maxima lightcurve (peaking at V =6 :7 mag). The outburst spectrum show BaII, LiI and lines of several s elements, with wide P-Cyg proles and a moderate and retracing emission in the Balmer lines. A light-echo discovered expanding around… 

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