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Be star V361 Per h-alpha evolution
Posted: Fri Feb 20, 2015 12:47 am
by umberto sollecchia
Hi all, recently I'm dedicated to the monitoring of faint Be stars with a low power resolving spectrograph, with the aim to verify any large changes.
I would like to report a possible h-alpha line evolution (decrease) for V361 Per. Here you find a comparison with a previous BeSS spectrum.
- Comparazione V361 Per.png (6.81 KiB) Viewed 5710 times
Can anyone confirm it with a better resolution spectrum?
Thank you.
Umberto
Re: Be star V361 Per h-alpha evolution
Posted: Thu Mar 05, 2015 8:42 pm
by Paolo Berardi
Ciao Umberto, I can confirm the H-alpha line intensity decreasing with a R ~6000 (noisy) spectral profile:
A profile comparison:
You have discovered several faint Be profile changes, congratulations!
Paolo
Re: Be star V361 Per h-alpha evolution
Posted: Mon Mar 09, 2015 1:36 am
by Robin Leadbeater
I have been waiting 2 week for clear skies to confirm this, but I see Paolo beat me to it
Anyway,here is a second confirmation at R ~5500. Very similar to Paolo's, perhaps even showing the narrow emission lines in the core of the weak H alpha absorption line
Robin
Re: Be star V361 Per h-alpha evolution
Posted: Mon Mar 09, 2015 1:53 am
by Christian Buil
Excellent (a fine entry for next Valerie Be stars new letter) !
Christian
Re: Be star V361 Per h-alpha evolution
Posted: Fri Mar 13, 2015 9:27 pm
by umberto sollecchia
Thank you very much for your confirmations! Christian, I'm glad if my observation has been interesting.
Umberto