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Photometric and Hα observations of LSI+61°303

Published online by Cambridge University Press:  26 May 2016

J. M. Paredes
Affiliation:
Dep. d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
J. Martí
Affiliation:
Dep. d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
F. Figueras
Affiliation:
Dep. d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
C. Jordi
Affiliation:
Dep. d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
G. Rosselló
Affiliation:
Dep. d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
J. Torra
Affiliation:
Dep. d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, E-08028 Barcelona, Spain
P. Marziani
Affiliation:
Dep. of Physics and Astronomy, University of Alabama, Tuscalosa AL 35487-0324, U.S.A.
J. Fabregat
Affiliation:
Dep. de Matemática Aplicada y Astronomía, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
V. Reglero
Affiliation:
Dep. de Matemática Aplicada y Astronomía, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
M. J. Coe
Affiliation:
Physics Department, University of Southampton, Southampton SO9 5NH, U.K.
C. Everall
Affiliation:
Physics Department, University of Southampton, Southampton SO9 5NH, U.K.
P. Roche
Affiliation:
Physics Department, University of Southampton, Southampton SO9 5NH, U.K.
S. J. Unger
Affiliation:
Physics Department, University of Southampton, Southampton SO9 5NH, U.K.
J. M. Grunsfeld
Affiliation:
Caltech, Pasadena, CA 91125, U.S.A.
A. J. Norton
Affiliation:
Dep. of Physics, The Open University, Walton Hall, Milton Keynes MK7 6AA, U.K.
R. Zamanov
Affiliation:
National Astronomical Observatory Rozhen, POB 136, 4700 Smoljan, Bulgaria

Extract

The Be massive X-ray binary LSI+61°303 is a 26.5 days periodic radiosource (Taylor & Gregory, 1984), exhibiting radio outbursts maxima between phases 0.6–0.8. Evidence of a photometric period of similar value has also been reported (Paredes & Figueras, 1986; Mendelson & Mazeh, 1989). The previous spectroscopic radial velocity observations of Hutchings & Crampton (1981) are in agreement with the radio period, and give support to the presence of a companion. We present new optical and infrared photometric observations and high resolution Hα spectra of LSI+61°303.

Type
3. X-Ray Observations
Copyright
Copyright © Kluwer 1994 

References

Hutchings, J.B., Crampton, D. 1981, PASP, 93, 486 CrossRefGoogle Scholar
Martí, J., Paredes, J.M., 1993 (in preparation) Google Scholar
Mendelson, H., Mazeh, T. 1989, MNRAS, 239, 733 CrossRefGoogle Scholar
Paredes, J.M., Figueras, F. 1986, A&A, 154, L30 Google Scholar
Paredes, et al., 1993 (in preparation) Google Scholar
Taylor, A.R., Gregory, P.C. 1984, ApJ, 283, 273 CrossRefGoogle Scholar

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