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bet Cep in emission

Posted: Sun Sep 11, 2016 10:53 pm
by Olivier Thizy
Hello,


My spectrum of beta Cephei taken in july showed an emission while spectrum from 2014 didn't (one from Olivier Garde in 2015 seems to show something).
I have taken another spectrum tonight and change seems slow:
graph_betcep_20160911_833_full.png
Note that spectra have been corrected from heliocentric velocity as well as the radial velocity from CDS catalog, explaining the difference in telluric lines between he two dates...


Cordialement,
Olivier