Dear colleagues,
our analysis of the libration of the accretion disk and its emission lobes in VV Cep provides in addition to the evaluation of the radial velocity (JAAVSOVolume 50, 2022) additional and further more consistent results (see attachment):
/sites/default/files/users/user63093/Libration%20VV%20Cep.jpg
Best wishes, Ernst Pollmann
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International Working Group ASPA
Active Spectroscopy in Astronomy
http://www.astrospectroscopy.de