| Author(s): | Wielen, R. |
| Title: | Uses and Required Characteristics of Reference Frames for Galactic Astronomy |
| Source: | In: Highlights of Astronomy, Vol. 7; J.-P. Swings (ed.), Reidel, Dordrecht, p. 51-54 |
| Year: | 1986 |
| Abstract: | Galactic astronomy requires mainly accurate proper motions of stars, referred to a system which represents an inertial system as closely as possible. We discuss the required accuracy, give an outlook on forthcoming reference frames of use for galactic astronomy, and discuss observationally determined upper limits on the rotation of the extragalactic reference frame. |
| Preprint issued: | |
| Remarks: | Presented at the 19th General Assembly of the IAU, New Delhi 1985 |
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