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SIMBAD is the reference database for identification and bibliography of astronomical objects. It contains identifications , 'basic data', bibliography, and selected observational measurements for several million astronomical objects. SIMBAD is developed and maintained by CDS, Strasbourg. Building the database contents is achieved with the help of several(More)
We describe results obtained in prototyping a Kohonen self-organising feature map as a user interface to a large document collection. We then discuss the provision of various tools which will be used in quality control of databases and catalogs produced from, and cross-referenced with, the online astronomical literature; and which will be used in future(More)
The Centre de Données astronomiques de Strasbourg (CDS) develops a set of value-added services, widely used for Nomenclature', integrate heterogeneous, selected information from observatory archives, sky surveys and publications. Each service organizes information in a different way (astronomical objects, tables, images with overlays, nomenclature), and the(More)
The explosion of on-line services and the rapid evolution in information technology, with the advent of the WWW, gives its full dimension to the electronic publication. Electronic publication has to be conceived with links to external resources (databases, bibliographic services) and with intelligent information retrieval tools. To provide links one needs(More)
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