Be stars & ARASBeAm

What to observe tonight with my eShel spectrograph? A very good way to find targets is to look at Be stars. Those stars are hot non supergiant B-type stars which show or have shown emission line in their spectra. Halpha is the first emission to be seen and is well covered by the eShel spectrograph, as well as Hbeta, Hgamma but also several helium lines for exemple...

Be star spectra taken by some professional and most of the amateurs are stored in BeSS database:

http://basebe.obspm.fr/basebe/

ARASBeAm is a nice and user friendly front end which list the Be stars and the date of their latest validated spectrum (note: several days/weeks can occure between upload and validation due to limited validator time and more and more spectra uploaded!). ARASBeAm is available at:

http://arasbeam.free.fr/

Here is an exemple of selection for my eShel:

Looking down the list around Orion constellation are several interesting targets such as 25 Ori: