Astronomisches Rechen-Institut Heidelberg

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ARI-Heidelberg Mitteilungen Serie A, No. 202

Author(s): Schwerdtfeger, H.M., Hering, R., Walter, H.G., Jahreiß, H.
Title: Optical Positions and Proper Motions of Selected Radio Stars
Source: In: Mapping the Sky. Proc. IAU Symp. 133, Paris, France, 1-5 June 1987; S. Debarbat, J.A. Eddy, H.K. Eichhorn, A.R. Upgren (eds.), Kluwer, Dordrecht, p. 455-459
Year: 1988
Abstract: From a list of 275 confirmed or potential radio stars proposed to the Hipparcos input catalogue we selected about 80 objects which either lie outside the conventional astrometric catalogues or which are SAO-stars having declinations less than -17 degrees. The positions of these stars were derived from measurements on POSS, SRC, and ESO(B) plates using reference stars from the SAO catalogue for the northern candidates, and from the Perth 70 catalogue for the southern candidates, respectively. The epochs of our positions fall in the middle of the fifties and seventies. For 52 stars other epochs were supplied by observations taken from literature. We determine proper motions from these positions which provide a base-line up to 35 years.
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