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Photometric and spectroscopic study of δ2 Lyrae
Published online by Cambridge University Press: 04 August 2017
Abstract
The bright star δ2 Lyr has been observed photoelectrically in the V and B pass bands for three years. The star is a long period variable with an amplitude of 0.2 mag and a period of 83 days. Light changes are coupled with small range velocity changes. On some well-exposed spectrograms the emission features of the H and K lines of CaII appear.
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- III. Spectroscopic Research Programmes
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- Copyright © Reidel 1986