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The Binary system V380 Cygni

Published online by Cambridge University Press:  12 April 2016

P. Battistini ,
A. Bonifazi ,
A. Guarnieri  and
M. Lolli
P. Battistini
Affiliation:
Dipartimento di Astronomia dell’Universita’ di Bologna,CP. 596-40100 BolognaItaly
A. Bonifazi
Affiliation:
Osservatorio Astronomico di Bologna, CP. 596-40100 BolognaItaly
A. Guarnieri
Affiliation:
Dipartimento di Astronomia dell’Universita’ di Bologna,CP. 596-40100 BolognaItaly
M. Lolli
Affiliation:
Osservatorio Astronomico di Bologna, CP. 596-40100 BolognaItaly

Extract

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This binary system, according to Semeniuk and Paczynski (1971), is very interesting because it is probably in a phase of rapid evolution through the Hertzsprung gap in the HR diagram and shows apsidal motion (Battistini et al. 1974) .

The system was Observed at the Bologna Astronomical Observatory in UBV because the only known light curve (Kron 1935) is insufficient to give appropriate orbital elements (Kopal 1940, Ramella et al. 1980) and it is impossible to fit photometric elements with spectroscopic results (Batten 1962). The observations started in 1970 and ended in 1973; in 1980 the system was reobserved to complete light curve coverage.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 107: Algols , 1989 , pp. 378
Copyright
Copyright © Kluwer 1989

References

References :

Batten, A.H.:1962,Pubb. Dom. Obs. Victoria 12,91 Google Scholar
Battistini, P.,Bonifazi, A.,Guarnieri, A.:1974, Astrophys.Space Sci. 30,163 CrossRefGoogle Scholar
Hill, G.,Batten, A.H.:1984,Astron. Astrophys., 141,39 Google Scholar
Kron, G.E.:1935,Astrophys J. 82,255 Google Scholar
Kopal, Z.:1940,Harvard Coll.Obs.Circ. No. 441,1 Google Scholar
Ramella, M.,Giuricin, G.,Mardirossian, F.,Mezzetti, M.:1980, Astrophys.Space Sci.71,385 Google Scholar
Semeniuk, I.,Paczynski, B.:1968,Acta Atronomica 18,33 Google Scholar
Wood, D.B.:1971,Astron. J.,76,701 Google Scholar
Wood, D.B.: 1980,Status report 10,private comunication.Google Scholar