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Photometric studies of three Be stars
Authors:Gao Wei-shi  Guo Xiao-zhen  Guo Yu-lian  Cao Hui-lai
Institution:Beijing Observatory, Academia Sinica, China
Abstract:From 1978 December to 1979 May, we made spectrographic observations of φPer, ζTau and κDra using our Schmidt cassegrain grating spectrograph. Values of electron density, rotational speed and variation have been obtained and a comparison between ζTau and the supergiant βOri carried out. We found that, over our observed period, θPer showed clear shell activities, ζTau was in a relatively calm phase, its shell slowly expanding, while κDra had all the signs of a “classical” Be star.
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