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The Active UV Phase of 59 Cyg

Published online by Cambridge University Press:  14 August 2015

V. Doazan ,
C. Grady ,
L. V. Kuhi ,
J. M. Marlborough ,
T. P. Snow  and
R. N. Thomas
V. Doazan
Affiliation:
Observatoire de Paris, Paris
C. Grady
Affiliation:
Univ. Colorado, Paris
L. V. Kuhi
Affiliation:
Univ. California, Paris
J. M. Marlborough
Affiliation:
Univ. western Ontario, Paris
T. P. Snow
Affiliation:
Univ. Colorado, Paris
R. N. Thomas
Affiliation:
Inst. d'Astrophysique, Paris

Abstract

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Coordinated UV and visual observations of 59 Cyg in 1978–81 show strong mass ejection activity and strong variability in displacements and profiles of superionized lines during the new Be phase, starting from a “quasi normal B” phase in 1977, and increasing irregularly through 1981 to a low and then moderate Hα emission. These data show that visual data alone cannot describe the activity of the star.

Type
VII. UV Observations and Mass Loss
Information
Symposium - International Astronomical Union , Volume 98: Be Stars , 1982 , pp. 415 - 418
Copyright
Copyright © Reidel 1982 

References

Doazan, V., Kuhi, L.V., Thomas, R.N., 1980 a, Ap. J. 235, L17 Google Scholar
Doazan, V., Kuhi, L.V., Marlborough, J.M., Snow, T.P., Thomas, R.N., 1980b, The Second IUE Conference, ESA-SP-157, p151 Google Scholar
Doazan, V., 1981, A. A. submitted Google Scholar
Mc Laughlin, D., 1948, as quoted in Merrill, P.W. and Burwell, C.G., 1948, Ap. J. 98, 163 Google Scholar
Snow, T.P., Marlborough, J.M., 1980, Ap. J. 235, 85 Google Scholar