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VSOP observations of the X-ray binary LSI + 61°303

Published online by Cambridge University Press:  13 May 2016

A.R. Taylor ,
S.M. Dougherty ,
W.K. Scott ,
M. Peracaula  and
J.M. Paredes
A.R. Taylor
Affiliation:
Physics & Astronomy, University of Calgary, Calgary, AB, Canada
S.M. Dougherty
Affiliation:
Physics & Astronomy, University of Calgary, Calgary, AB, Canada
W.K. Scott
Affiliation:
Physics & Astronomy, University of Calgary, Calgary, AB, Canada
M. Peracaula
Affiliation:
Astronomia i Meteorologia, Universitat de Barcelona, Barcelona, Spain
J.M. Paredes
Affiliation:
Astronomia i Meteorologia, Universitat de Barcelona, Barcelona, Spain

Abstract

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We have made multi-epoch observations of the unusual X-ray binary star LSI + 61°303 using the HALCA spacecraft in combination with a large array of ground radio telescopes. We present initial analysis of six observing epochs during a radio outburst. The images reveal an apparently stationary pattern of symmetric emission extending about 2 mas on either side of a central source. The central source is observed to expand at a rate of 0.25 mas/day. At the distance to LSI + 61°303, this corresponds to ∼ 860 km/s.

Type
Star Formation Regions and Outflow Processes in our Galaxy
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 270 - 271
Copyright
Copyright © Astronomical Society of the Pacific 2001