HD 158643 in emission ?

[Olivier GARDE]

Last night I took a reference star (HD 158643) for one of my targets.

I was surprised to find that the H Alpha line was in emission.
This star is a A0V, not a B star.

My question is : is it a possible Be star ?



and a closer look to the Halpha region

[Robin Leadbeater]

Hello Olivier,

HD 158643 is listed as Be in SIMBAD
http://simbad.u-strasbg.fr/simbad/sim-b ... BAD+search
and in some papers has been classified as B9.5e
http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/mk
I dont know why it is not in BeSS though

Cheers
Robin

[Olivier GARDE]

Thank Robin for your answer.

Maybe Coralie should have some information about why this star isn't in Bess.

[Olivier GARDE]

For information, Coralie has just added this target in the BESS database.