International Virtual Observatory Alliance The Standards - - PowerPoint PPT Presentation

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International Virtual Observatory Alliance The Standards - - PowerPoint PPT Presentation

International Virtual Observatory Alliance The Standards Organization for Data Interoperability in Astronomy G. Fabbiano Senior Astrophysicist, Smithsonian Astrophysical Observatory Head, Data Systems Division, Chandra X-ray Center Chair of


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International Virtual Observatory Alliance

The Standards Organization for Data Interoperability in Astronomy

  • G. Fabbiano

Senior Astrophysicist, Smithsonian Astrophysical Observatory Head, Data Systems Division, Chandra X-ray Center Chair of International Virtual Observatory Alliance Executive Committee

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What is the Virtual Observatory?

A multi-wavelength digital sky that can be searched, visualized, and analyzed in new and innovative ways

  • Nov. 2017
  • G. Fabbiano

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What is the Virtual Observatory?

The VO is the latest stage of good data practices in astronomy

  • Each data center / archive with different file structure,

metadata, table organization

  • The data is there, but it takes work to access it,

especially if several data sets are used together

  • Nov. 2017
  • G. Fabbiano

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  • FITS provided a first standardization
  • The Virtual Observatory is the natural

progression towards interoperability of data, services and tools

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Data Literature Tools

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Data Literature Tools

Data

Findable Accessible

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SLIDE 6
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Data Literature Tools

Data

Findable Accessible

Data

Interoperable

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SLIDE 7
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  • G. Fabbiano

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Data Literature Tools

Data

Findable Accessible

Data

Interoperable

Data

Re-useable

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  • G. Fabbiano

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Data Literature ToolsFAIR

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The VO is a Framework

  • For data centers to provide co-operating data services
  • For software providers to offer a variety of compatible

analysis and visualization tools and user interfaces

  • Support interdisciplinary (multi-wavelength) and

collaborative research in astronomy

  • Exploit the full power of growing and emerging data

sets

  • Provide powerful and unique data and tools for

education and public outreach

  • Nov. 2017
  • G. Fabbiano

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To

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The VO is a Framework

  • For data centers to provide co-operating data services
  • For software providers to offer a variety of compatible

analysis and visualization tools and user interfaces

  • Support interdisciplinary (multi-wavelength) and

collaborative research in astronomy

  • Exploit the full power of growing and emerging data

sets

  • Nov. 2017
  • G. Fabbiano

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To

Standards !

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IVOA Standards

At the core of the VO is a set of standards developed within the International Virtual Observatory Alliance (IVOA) to support good data management and interoperability

  • Standardization of data and metadata for observed and

simulated data

– Data Model; Uniform Content Descriptors

  • Standardization of data exchange methods

– Data Access Layer; VO Query Language

  • Standardization of lists and characteristics of available

services

– IVOA registry

  • Standardization of application messaging protocol

– SAMP – VO-enabled tools and services can interface seamlessly with VO-enabled archives worldwide

  • Nov. 2017
  • G. Fabbiano

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IVOA Today

www.ivoa.net

  • Created in 2002, the International Virtual Observatory

Alliance (IVOA) today has 21 member projects

  • The IVOA has no direct funding

– Affiliated projects seek funding from their national agencies

  • Nov. 2017
  • G. Fabbiano

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IVOA Today

www.ivoa.net

  • 2 well attended interoperability working

meetings per year

  • Nov. 2017
  • G. Fabbiano

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Santiago, Chile - Oct. 2017 151 participants

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IVOA Organization Chart

  • Nov. 2017

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Executive Committee Technical Coordination Group Data Model Data Access Layer Applications Semantics Registry Grid & Web Services Knowledge Discovery in Databases Operations Time Domain Theory Education Data Curation & Preservation Committee on Science Priorities Standards & Processes Committee

Working Groups Interest Groups

Media Group Solar System

  • G. Fabbiano
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IVOA Organization Chart

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Executive Committee Technical Coordination Group Data Model Data Access Layer Applications Semantics Registry Grid & Web Services Knowledge Discovery in Databases Operations Time Domain Theory Education Data Curation & Preservation Committee on Science Priorities Standards & Processes Committee

Working Groups Interest Groups

Media Group Solar System

  • G. Fabbiano

Interface with science community

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IVOA Organization Chart

  • Nov. 2017

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Executive Committee Technical Coordination Group Data Model Data Access Layer Applications Semantics Registry Grid & Web Services Knowledge Discovery in Databases Operations Time Domain Theory Education Data Curation & Preservation Committee on Science Priorities Standards & Processes Committee

Working Groups Interest Groups

Media Group Solar System

  • G. Fabbiano

We need well-defined processes to make this international collaboration work effectively

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IVOA Organization Chart

  • Nov. 2017

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Executive Committee Technical Coordination Group Data Model Data Access Layer Applications Semantics Registry Grid & Web Services Knowledge Discovery in Databases Operations Time Domain Theory Education Data Curation & Preservation Committee on Science Priorities Standards & Processes Committee

Working Groups Interest Groups

Media Group Solar System

  • G. Fabbiano

Standard Development

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IVOA Organization Chart

  • Nov. 2017

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Executive Committee Technical Coordination Group Data Model Data Access Layer Applications Semantics Registry Grid & Web Services Knowledge Discovery in Databases Operations Time Domain Theory Education Data Curation & Preservation Committee on Science Priorities Standards & Processes Committee

Working Groups Interest Groups

Media Group Solar System

  • G. Fabbiano

Discussion of scientific needs and requirements

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IVOA Successes –Archives in the VO

  • Major astronomical data collections accessible through the VO

– CDS, CADC, MAST, IRSA, ESA, Chandra, …

  • Nov. 2017
  • G. Fabbiano

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IVOA Successes – VO in Data Centers

  • VO-ready infrastructure built-in astronomical data centers

– CADC, Gaia, Euclid, … – Data (file & database) access and User Work Space (VOSpace)

  • Nov. 2017
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IVOA compliant 3rd-party applications

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  • VO-inspired and VO-

compliant

– WorldWide Telescope (Microsoft) – Now under American Astronomical Society management – Used for education and

  • utreach in the USA and
  • ther countries (e.g.,

China)

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VO interoperable applications

  • Topcat, Aladin, VOSpec, SPLAT-VO, Iris,

DS9, ESAsky

SPLAT-VO ALADIN USVOA-IRIS: import, build, display, edit SEDs, fit to models with Sherpa DS9

  • Nov. 2017
  • G. Fabbiano

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The VO is not a Killer Application

  • Nov. 2017
  • G. Fabbiano

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  • Dr. Strange
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  • IVOA defines VO “ecosystem” and

interoperability standards

  • Astronomy projects and data services build

VO services and VO applications

  • VO registries, Archive interfaces and VO-

enabled software offer Entry Points to VO resources, Visualization, Analysis

  • Increase in the software and technological

literacy of the average astronomer is helping in VO uptake