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VLBI Observations of Stellar Binary Systems

Published online by Cambridge University Press:  04 August 2017

R. L. Mutel ,
J. F. Lestrade ,
R. A. Preston ,
A. E. Niell ,
R. B. Phillips  and
J. Webber
R. L. Mutel
Affiliation:
Dept. Physics & Astron., Univ. of Iowa, Iowa City, IA
J. F. Lestrade
Affiliation:
Bureau de Longitudes, Paris, France
R. A. Preston
Affiliation:
Jet Propulsion Laboratory, Pasadena, CA
A. E. Niell
Affiliation:
Jet Propulsion Laboratory, Pasadena, CA
R. B. Phillips
Affiliation:
Haystack Observatory, Westford, MA
J. Webber
Affiliation:
Haystack Observatory, Westford, MA

Extract

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Since 1982 July we have been engaged in a systematic investigation of the milliarcsecond structure of the radio emission from several binary star systems, mainly in the RS CVn class (Hall, 1976). The first few observations utilized the MkII VLBI recording scheme, but no useful data were obtainable because of the relatively low flux levels involved Beginning in 1982 December, we have been using the MkIII system with large telescopes and have successfully detected seven binary systems (UX Arietis, HR 1099, Algol, II Peg, σ Crb, and the distant system LSI 61°303). A summary of the three experiments already completed is given in Table 1.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 110: VLBI and Compact Radio Sources , 1984 , pp. 277 - 279
Copyright
Copyright © Reidel 1984 

References

Hall, D.S.: 1976, in IAU Colloquium 29, “Multiply Periodic phenomena in Variable Stars,” Fitch, W.S., Ed. (Reidel: Dordrecht).Google Scholar
Lestrade, J.F., Mutel, R.L., Preston, R.A., Scheid, J.A., and Phillips, R.B.: 1983a, submitted to Astrophys. J. (Lett.) Google Scholar
Lestrade, J.F., Mutel, R.L., Preston, R.A., and Phillips, R.B.: 1983b, in preparation.Google Scholar
Melrose, D.B. and Dulk, G.A.: 1982, Astrophys. J. 259, p. 844.Google Scholar
Mutel, R.L., Doiron, D.J., Lestrade, J.F., and Phillips, R.B.: 1983, submitted to Astrophys. J. Google Scholar
Owen, F.N., Jones, T.W., and Gibson, D.M.: 1976, Astrophys. J. (Lett.) 210, p. L27.Google Scholar
Preston, R.A., Lestrade, J.F., and Mutel, R.L.: 1983, Proc. of Hipparcos Thinkshop, Asiago, Italy, May 1983.Google Scholar