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On the Determination of an Astrometric Center of a Quasar1

Published online by Cambridge University Press:  12 April 2016

Roman Galas
Roman Galas*
Affiliation:
Sternwarte der Universität Bonn Auf dem Hügel 71, D–5300 Bonn, FRG

Abstract

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The influence of optical structure of compact extragalactic radio sources on the definition of their centroids is discussed. Numerical calculations are performed using 4C 31.63 as an example. The results show that the presence of the underlying luminous galaxy does not lead to an unusual decrease of the accuracy in the optical astrometric measurements.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 127: Reference Systems , 1991 , pp. 261
Copyright
Copyright © United States Naval Observatory 1991

Footnotes

1

Will appear in the Proceedings of the Colloquium “Systemes de Reference Spatio-temporels”. Eds.: N.Capitaine, S.Debarbat. Paris, 1990.

References

1 Will appear in the Proceedings of the Colloquium “Systemes de Reference Spatio-temporels”. Eds.: N.Capitaine, S.Debarbat. Paris, 1990.