may 10, 2006ivoa-ggf astro-rg ws1 welcome and workshop goal masatoshi ohishi / naoj & sokendai...
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May 10, 2006 IVOA-GGF Astro-RG WS 1
Welcome and Workshop Goal
Masatoshi Ohishi / NAOJ & SokendaiChairman, IVOA
大石雅寿 / 国立天文台 & 総合研究大学院大学 [email protected]
May 10, 2006 IVOA-GGF Astro-RG WS 2
VO Projects in the world• 17 countries and a region
• International Virtual Observatory Alliance (IVOA)Standards to interoperate VOs
http://www.ivoa.net/
May 10, 2006 IVOA-GGF Astro-RG WS 3
IVOA Interoperability WS in Kyoto
• 2005 May
• 90+ people
• About 20 countries including China, Korea and Taiwan
• Supported by JSPS
May 10, 2006 IVOA-GGF Astro-RG WS 4
Standardization in IVOA
• Query Language to Federated DBs (VOQL)
• Access resource meta-data based on the OAI-PMH
• Access Images, Spectra, Catalogues, etc ： SkyNode, SIAP, SSAP, STC, etc.
• Unified Attribute Names ： UCD (Unified Contents Descriptions)
• Output format ： VOTable (XML)
• and so on
May 10, 2006 IVOA-GGF Astro-RG WS 5
May 10, 2006 IVOA-GGF Astro-RG WS 6
Schematic diagram of VOs
JVO Portal Server
User
Controller ・ parser ・ scheduler ・ Service caller
Resource Meta-data
Web Services
Web Services
Web Services
Web ServicesInput Queries and AnalysisParameters
User Interface
・ Query Editor・ VOTable viewer・ DB queries・ Plotter・ etc
US/CAN
Europe
SIAP/SSAP/SkyNode
SIAP/SSAP/SkyNode
May 10, 2006 IVOA-GGF Astro-RG WS 7
Exchange of Meta Data:OAI-PMH
Searchable Registry
Publishing Registry
Publishing Registry
Data Service
Analysis Service
Virtual Observatory Client
Query Services
Access to various services
May 10, 2006 IVOA-GGF Astro-RG WS 8
Interconnected VOs in the World
Canada VO
May 10, 2006 IVOA-GGF Astro-RG WS 9
Discovery of a Brown Dwarf：SDSS/2MASS
discoveries like this much easier if databases jointly queryable
May 10, 2006 IVOA-GGF Astro-RG WS 10
Detection of MANY Type II Quasars
May 10, 2006 IVOA-GGF Astro-RG WS 11
The ACA System• Twelve (12) 7-meter diameter antennas (18 stations)• Four (4) 12-meter diameter antennas (4 stations)• ACA Correlator in AOS building
ALMA (Atacama Large Millimeter Array) production rate ~ a few PBytes per year
May 10, 2006 IVOA-GGF Astro-RG WS 12
WS Goals
• R&D Operational Systems– Data management for Huge data
– Global Workflow mechanism
– need global authentication/authorization
• Share Current Status of VO as a GOOD example of Data Grid Apps.
• Strengthen relationship between VOers and Grid experts toward secure VO systems