Nov CAS 2007, GuangZhou

崔辰州 中科院国家天文台 中国虚拟天文台研发团队 Chinese Virtual Observatory VO is coming...

Nov CAS 2007, GuangZhou Content VO Introduction IVOA and its specifications China-VO VO is READY for better science

Nov CAS 2007, GuangZhou What is VO

Nov CAS 2007, GuangZhou VO concept Virtual Observatory (VO) is a data-intensively online astronomical research and education environment, taking advantages of advanced information technologies to achieve seamless, global access to astronomical information. The power of the World Wide Web is its transparency. It is as if all the documents in the world are inside your PC. The idea of the Virtual Observatory is to achieve the same transparency for astronomical data and other related information (Quinn et al. 2004).

Nov CAS 2007, GuangZhou IVOA in Growth International Virtual Observatory Alliance (IVOA) formed in June 2002 with a mission to facilitate the international coordination and collaboration necessary for the development and deployment of the tools, systems and organizational structures necessary to enable the international utilization of astronomical archives as an integrated and interoperating virtual observatory.

Nov CAS 2007, GuangZhou VO drivers : science Science driven, technic enabled multi-archive research Precision Cosmology The Time Domain A Panchromatic approach to the Universe…

Nov CAS 2007, GuangZhou Science driven, technic enabled VO drivers : technology hardware trends –ops, storage, bw : all 1000x/decade –data i/o bw 10x/decade data avalanche –CCD array –digital sky survey –numerical simulation

IVOA Protocols key for interoperability

Nov CAS 2007, GuangZhou VO framework agreed standards inter-operable data collections inter-operable software modules no central VO-command

Nov CAS 2007, GuangZhou Standardization Standard semantic Standard data format Standard data models Standard access protocols Standard registries

Nov CAS 2007, GuangZhou Protocol List VOTable FITS Cone Search Protocol Simple Image Access (SIA) Protocol Simple Spectral Access (SSA) Protocol SkyNode Astronomical Data Query Language (ADQL) Uniform Column Descriptors (UCDs) Space-Time Coordinates (STC) IVOA Identifiers VO Registry Resource Metadata Registry Access Protocols OAI VOEvent NESSSI VOSpace PLASTIC Common Execution Architecture Request-Object Management Environment (ROME)

Nov CAS 2007, GuangZhou China-VO Chinese Virtual Observatory (China-VO) is the national VO project in China initiated in 2002 by Chinese astronomical community led by National Astronomical Observatories, Chinese Academy of Sciences. The China-VO aims to provide VO infrastructure for Chinese astronomers and to share astronomical resources in China to the world. It focuses its research and development on VO science and applications.

Nov CAS 2007, GuangZhou R&D Focuses China-VO Platform – 中国虚拟天文台系统平台的开发 Unified Access to On-line Astronomical Resources and Services – 国内外天文研究资源的统一访问 VO-ready Projects and Facilities – 支持 VO 的项目与观测设施 VO-based Astronomical Research Activities – 基于 VO 的天文研究示范 VO-based Public Education – 基于 VO 的天文科普教育

Nov CAS 2007, GuangZhou VO-enabled LAMOST VO-enabled –LAMOST data –LAMOST Pipeline

Nov CAS 2007, GuangZhou st VO workshop in China “China-VO” kicked off “China-VO” became a member of the IVOA China-VO system design the 2nd VO workshop IVOA Small Projects Meeting VOFilter 1.0 released China-VO VOFilter 2.0 released China-VO VO-DAS project began SkyMouse 1.0 released China-VO FitHAS 1.0 released IVOA interoperability meeting, Beijing China-VO 2007 History and Events

Nov CAS 2007, GuangZhou Small project meeting, Beijing November 2003: Beijing, China Main topics: –Advantages and disadvantages of small projects. –The role of small projects in the IVOA. –R&D focus of small projects. –Collaboration among small projects and with big VO projects. –Implementation of IVOA standards and infrastructures developed by other VO projects. 39 participants from Korea, Japan, India, Europe, UK and China (including Taiwan)

Nov CAS 2007, GuangZhou IVOA 2007, Beijing

Nov CAS 2007, GuangZhou Two XSLT transforms VOFilter –an XML filter for OpenOffice.org Calc to open VOTable files – VOTable2XHTML –a stylesheet to transform VOTable data into HTML/XHTML format –

Nov CAS 2007, GuangZhou Touch the sky with your mouse An intelligent client for VO services A commodity for astronomers and students A Smart On-line Astronomical Information Collector

Nov CAS 2007, GuangZhou FitHAS: FITS Header Archiving System An useful assistant tool for FITS providers and managers Importing FITS keyword records for one or more FITS files under a given directory into a database by several mouse clicks

Nov CAS 2007, GuangZhou VO Data Access Service (VO-DAS) An OGSA-DAI based service system to provide unified access to astronomy data, including catalogs, images and spectra. Goals of VO-DAS –Supporting high volume data query –Interlinking distributed and heterogeneous archives catalogs, images, spectrums works for astronomers –Providing a software that works for astronomers –An Alpha version of VO-DAS was ready

Nov CAS 2007, GuangZhou VO is READY for better science

Nov CAS 2007, GuangZhou

Nov CAS 2007, GuangZhou NVO Core Services NVO Registry Portal: Find source catalogs, observation logs, image archives, and other astronomical resources registered with the NVO DataScope: Discover and Explore Data in the Virtual Observatory Open SkyQuery: Cross match yoru data with numerous catalogs NVO Spectrum Services: Search, plot, and retrieve SDSS, 2dF, and other spectra Web Source Extractor: Upload images to SExtractor and cross- correlate the objects found with selected survey catalogs.

Nov CAS 2007, GuangZhou Aladin V4 Aladin v4 an interactive software sky atlas developed by CDS MultiView, multiProjection Resampling Blinking: builds on the fly image sequences (slow movies) GIF, JPEG and PNG support Cut graph: along any segment Cross match algorithm: for better object catalog analysis Multi-language

Nov CAS 2007, GuangZhou PLASTIC

Nov CAS 2007, GuangZhou VO Science Papers Discovery of optically faint obscured quasars with Virtual Observatory tools (2004A&A P) Luminous AGB stars in nearby galaxies. A study using virtual observatory tools (2006A&A T) Candidate Milky Way satellites in the Galactic halo （ Liu et al., A&A in press) First science paper from China-VO

A new prosperous era for astronomical software and services Astrogrid Workbench Aladin VizieR Simbad Datascope Astroscope Topcat VOSpec VOPlot SPLAT STILTS EURO-3D Specview VisIVO VOSED ADS Helioscope Yafit Registry PLASTIC Web Service SIA SSA VOTable Astro Runtime MySpace Workflow Open SkyQuery VOEventNet It is not a thing

Nov CAS 2007, GuangZhou IYA: Astronomy 2009 The official slogan of the IYA 2009 is: The Universe: Yours to Discover Return your suggestions to: 天文名词委邮件列表 （ ）