Interoperability in the CDS services.

Details Interoperability in the CDS services. Interoperability in the CDS services.

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.0804g&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #08.04; Bulletin of the American Astronomical Society, Vol. 34, p.1105

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Astrophysical Virtual Observatory Project (PI: P. Quinn, ESO) has three Work Areas: Science case (P. Benvenuti, ST-ECF), Interoperability (F. Genova, CDS) and Advanced technologies (A. Lawrence, AstroGrid). The development of an Interoperability prototype, implementing a set of European archives into VizieR and Aladin, in collaboration with all the AVO partners, has been a first-year milestone of the AVO. Interoperability standards are widely discussed in all VO projects, and in the Interoperability Working Group first set by the European OPTICON Network. They are a main topic of the International Virtual Observatory Alliance. Specific developments and customizations have been integrated in SIMBAD, VizieR and Aladin. The adopted VOTable standard is used for the exchange of tabular data, and a VOTable parser, able to give rapidly access to tables containing large numbers of objects, has been developed. The categorization of column contents in VizieR tables and catalogues has lead to the definition of the Uniform Content Descriptors (UCDs). The UCDs have proven very powerful for building new functionalities such as checking of table contents, catalogue selection (e.g. finding tables which contain specific information item), filtering (e.g. visualizing, through Aladin, objects of a specific magnitude or colour range) and data transformation and combination (e.g. computing a colour index).

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