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Photometric and spectroscopic study of δ2 Lyrae

Published online by Cambridge University Press:  04 August 2017

Gustav A. Bakos  and
Jozef Tremko
Gustav A. Bakos
Affiliation:
Department of Physics University of Waterloo Waterloo, Ont. N21 3G1 Canada
Jozef Tremko
Affiliation:
Skalnate Pleso Observatory Slovak Academy of Sciences 059 60 Tatranska Lomnica Czechoslovakia

Abstract

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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.

Type
III. Spectroscopic Research Programmes
Information
Symposium - International Astronomical Union , Volume 118: Instrumentation and Research Programmes for Small Telescopes , 1986 , pp. 429 - 430
Copyright
Copyright © Reidel 1986 

References

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