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VO Course 03: IVOA, the International Virtual Observatory Alliance
 

VO Course 03: IVOA, the International Virtual Observatory Alliance

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Description of the elements and purpose of the IVOA, the International Virtual Observatory Alliance. Part of the virtual observatory course by Juan de Dios Santander Vela, as imparted for the MTAF ...

Description of the elements and purpose of the IVOA, the International Virtual Observatory Alliance. Part of the virtual observatory course by Juan de Dios Santander Vela, as imparted for the MTAF (Métodos y Técnicas Avanzadas en Física, Advanced Methods and Techniques in Physics) Master at the University of Granada (UGR).

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    VO Course 03: IVOA, the International Virtual Observatory Alliance VO Course 03: IVOA, the International Virtual Observatory Alliance Presentation Transcript

    • The International VirtualObservatory Alliance (IVOA)Composition & PurposeJuan de Dios Santander Vela (IAA-CSIC)
    • OverviewThe International Virtual Observatory AllianceWorking GroupsInterest GroupsThe IVOA Document ProcessAnatomy of an IVOA standard
    • Data Curation & Technical Coordination Radio (obsolete) Preservation Groupinspired Steering & Theory Interest Groups IVOA Executive Coordination Standing Committee on OGF AstroRG Standards & Processes IVOA Applications VOTable Working Groups VO Query Data Access Layer Language Data Modelling VO Events Grid & Web Semantics Services Resource Registry
    • Working Groups
    • ApplicationsConcerned with the software tools used to accessVO data and services for doing Astronomy Announcement & discussion of VO applications Feedback on standards’ implementation Identify missing/desirable technical capabilities & and scientific usability for VO applications Propose and develop standards specific to VO Astronomy-user-Applications
    • Data Access LayerDefine and formulates VO standards for remotedata access Simple Cone Search, Simple Image Access, Simple Spectral Access… Table Access Protocol Data Access Layer Interface More!
    • Data ModellingProvides a framework for the description ofmetadata attached to observed or simulated dataLogical relationships between these metadata,based on how astronomers retrieve, process &interpret astronomical data Provides an architecture to handle themData Models are used across all VO standards
    • Grid & Web ServicesDefines the use of Grid technologies and WebServices within the VO contextInvestigates, specifies, and implements requiredstandards in this area
    • Resource RegistryThe IVOA Registry allows clients to be able tolocate, get details of, and make use of, anyresource located anywhere in any VirtualObservatory This WG defines the protocols and standards for registry services interoperability
    • SemanticsExplore semantic technology with the aim ofproducing new standards that aid VO interoperability Concerned with meaning & interpretation of words, sentences, or other language forms in astronomyActivities Maintenance of UCDs IVOA Standard Vocabulary Exploration of Ontologies
    • VO EventsDefine the content and meaning of a standardinformation packet for representing, transmitting,archiving, and publishing a discovery of animmediate event in the sky Who, When, Where, What, How
    • VO Query LanguageIn charge of defining a universal Query Languageto be used by applications accessing distributeddata within the Virtual Observatory framework VOQL ➡ ADQL, PQL
    • VOTableResponsible for the definition of the VOTable, andits evolutionCross-links with the Apps, DAL, and DM workinggroupsNow in maintenance mode
    • Steering & CoordinationCommittees
    • Steering & CoordinationCommitteesIVOA ExecutiveTechnica Coordination GroupStanding Committee on Standards & Processes
    • IVOA Document Process Proposing Body Document Status IAU Standard IAU VO possible IAU endorsement Working Group Recommendation inspired IVOA IVOA-wide RFC, 4 weeks, Executive with TCG 4-weeks review significant Proposed revision Recommendation An IVOA agreement within Working Group working group Working Draft Notes
    • IVOA Documents
    • References & LinksIVOA WebsiteIVOA Documents RepositoryIVOA Document Standards Management