Intriguing detection of 12CO molecular emission in a classical Be star

In the group of B stars with spectroscopic peculiarities, we can find Be and B[e] stars. The are early-type rapid rotators that present, as their principal characteristic, emission lines hydrogen singly ionized metals due to presence a gaseous envelope. present in spectra heterogeneous features reveal regions very different properties dusty Our goal is study evolution disks around peculiar through variability physical dynamical structure, well set constraints on models disk forming mechanisms. Throughout last decade, have carried out temporal monitoring sample objects near infrared using facilities at Gemini Las Campanas Observatories. work, focus classical star 12 Vul, for which also optical been collected quasi-simultaneously. We observed line profiles attributed dissipating building-up processes circumstellar Also, found this presented $^{12}$CO band heads one observation. molecule has not previously reported star, while it common feature among obtained parameters describe emitting region propose scenarios explain intriguing emission.