Abstract
Astronomy is a fertile environment with collaborations leading to the elaboration of disciplinary standards. Deploying standards in data centers can be beneficial for long term preservation and it puts the discipline in the open data era. VizieR [1] is the CDS service dedicated to catalogues. It gathers data and tables, but also associated data like spectra or images coming from published papers or collaborations with various agencies. VizieR gives access to data through services to the astronomical community and preserves data for the long term. Several years ago, it became clear that it was worth applying for an external evaluation to certify that VizieR is a trustable data repository. The Data Seal of Approval (DSA) [2] is granted to repositories that are committed to archiving and providing access to scholarly research in a sustainable way. CDS applied to the DSA in particular for the VizieR catalogue service. The VizieR information system is based on accurate data documentation provided by specialists. The data life cycle from ingestion to access and preservation is presented, with reference to the Open Archive Information System (OAIS [3]).
Highlights
Astronomy is a fertile environment with collaborations leading to the elaboration of disciplinary standards
Usability is well described by the FAIR (Findable, Accessible, Interoperable, Reusable) [6] principles, and leads data centers to implement vocabularies, formats, protocols, identifiers, etc
The Data Seal of Approval (DSA) board examines the responses and the documentation provided by the data center
Summary
The CDS VizieR catalogue service, created in 1995, provides the astronomical community with free access to data. Usability is well described by the FAIR (Findable, Accessible, Interoperable, Reusable) [6] principles, and leads data centers to implement vocabularies, formats, protocols, identifiers, etc. In VizieR we distinguish "basic" meta-data and "rich" meta-data. Basic meta-data is the minimal description required for understanding the data. Rich meta-data enables data to be reused by software. The IVOA (International Virtual Observatory Alliance) elaborates advanced standards in particular for registries, data models, protocols and vocabularies which enable FAIR interoperability. Providing data in the Virtual Observatory framework should be compulsory today for an astronomical data center
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