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By M. S. Davis (auth.), C. Jaschek, G. A. Wilkins (eds.)

The relevant function of IAU Colloquium No. 35 was once to debate these points of the strategies of the compilation, overview, and distribution of knowledge which are universal to astrometry, photometry and spectrometry of stars and stellar structures. within the assertion of the Colloquium, it was once recommended that there will be precise emphasis at the strategies of quality controls, and at the criteria for the presentation of numerical information in either revealed and com­ puter-readable shape. because the assembly advanced it grew to become transparent that the shortcoming of a typical, unambiguous method for the identifi­ cation of stellar gadgets was once a resource of a lot confusion and inefficiency within the use of present information documents. This and different such issues have been the topic of additional discussions by means of fee five on the common meeting of the foreign Astronomical Union (IAU), which used to be held at Grenoble in the course of the following fortnight, 24 August - 2 September 1976. The suggestion for the Colloquium was once ready by way of J. Jung, who used to be then Director of the Centre des Donnees Stellaires at Stras­ bourg, and G. A. Wilkins, Chairman of the IAU operating workforce on Numerical information, and used to be approved via the IAU govt Committee at the advice of the President of fee five, with the aid of Commissions 25, 29 and forty five. The medical establishing Committee consisted of W. Fricke, B. Hauck, C. Jaschek, J. Jung, B. Kukarkin, P. Lacroute, A. Underhill and G. A. Wilkins (Chair­ man). The neighborhood setting up Committee consisted of A.

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Extra resources for Compilation, Critical Evaluation and Distribution of Stellar Data: Proceedings of the International Astronomical Union Colloquium No. 35, held at Strasbourg, France, 19–21 August, 1976

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REF: bibliographical references, listing the titles of the papers On this scheme, the following facilities have been developed: a - Retrieval of all the information for a given set of stars defined by any identifiers b - Creation of a subset of the CSI on the basis of given criteria, such as position in the sky, magnitudes, spectral type, or combinations of data requirements. This facility is especially suited for statistical analysis, which requires the whole information known at present for a combination of data.

The use of the nanometre rather than of the ~ngstrom and of the joule rather than the erg, to give two examples, involve only changes by powers of ten; it does not take long to adjust to the fact that the density of water is 1000 kg/m3 • The use of the electrical and magnetic units of the SI system does require some changes in the formulae that are used, but the advantages of the adoption of a single system for all applications would soon outweigh the disadvantages of the change. 3. CONCLUSION I am hoping that it will be possible to include a firm recommendation for the general use of SI units in a "Guide to the presentation of astronomical data in the primary literature" to be prepared under the auspices of IAU Commission 5.

FACILITIES PROVIDED BY THE CENTER The general structure of the data base is described in Fig. 2. The fundamental catalogue, the CSI, is connected to the secondary files; all these files are on direct-access devices. These secondary files are: 33 THE CATALOGUE OF STELLAR IDENTIFICATIONS TABLE I. Catalogues connected to the CSI. Catalogue Data Number of Objects SAO } AGK2/3 Yale Zones GC Proper motion 360 000 FK4 Proper motion 2 000 N30 Proper motion 5 300 GC Trig Par. Parallaxes 5 800 Blanco et al.

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