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China-VO and LAMOST Database

China-VO and LAMOST Database. Chenzhou CUI NAOC, CAS. Chinese Virtual Observatory. History and Events. 2001.11 1st VO workshop in China 2002.7 “China-VO” kicked off 2002.10 “China-VO” became a member of the IVOA 2003.9 the 2nd VO workshop 2003.11 IVOA Small Projects Meeting

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China-VO and LAMOST Database

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  1. China-VO and LAMOST Database Chenzhou CUI NAOC, CAS

  2. Chinese Virtual Observatory

  3. KIAA-Cambridge Workshop

  4. History and Events • 2001.11 1st VO workshop in China • 2002.7 “China-VO” kicked off • 2002.10 “China-VO” became a member of the IVOA • 2003.9 the 2nd VO workshop • 2003.11 IVOA Small Projects Meeting • 2004.5 VOFilter 1.0 released • 2004.12 China-VO 2004 • 2005.11 China-VO 2005 • 2006.12 China-VO 2006 • 2007.5 IVOA interoperability meeting • 2007.11 China-VO 2007 • 2008.11 China-VO 2008 KIAA-Cambridge Workshop

  5. KIAA-Cambridge Workshop

  6. 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 KIAA-Cambridge Workshop

  7. Two XSLT transforms • VOFilter • an XML filter for OpenOffice.org Calc to open VOTable files • http://services.china-vo.org/vofilter/ • VOTable2XHTML • a stylesheet to transform VOTable data into HTML/XHTML format • http://services.china-vo.org/votable2xhtml/ KIAA-Cambridge Workshop

  8. A Smart On-line Astronomical Information Collector SkyMouse • Touch the sky with your mouse • An intelligent client for VO services • A commodity for astronomers and students KIAA-Cambridge Workshop

  9. 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 KIAA-Cambridge Workshop

  10. 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 • Providing a software that works for astronomers KIAA-Cambridge Workshop

  11. VO Tools (Aladin, TOPCAT) PLASTIC Local DB MATLAB Database Toolbox VOTables Java Libraries AstroBox MATLAB VO-DAS Client VO-DAS AstroBox • A plug-in package for MATLAB to provide an astronomical data mining application service, supporting VO protocols and tools. • A high-level data analysis environment supporting: • PLASTIC • VOTable • Local DB • VO-DAS client • Astronomical algorithms KIAA-Cambridge Workshop

  12. First Science Paper from China-VO • Candidate Milky Way satellites in the Galactic halo（Liu et al., 2008, A&A) • SDSS DR5 photometric data were searched for new Milky Way companions or substructures in the Galactic halo. • Data analysis procedures were based on the VO-DAS. • Five candidates are identified as over-dense faint stellar sources that have color-magnitude diagrams similar to those of known globular clusters, or dwarf spherical galaxies. KIAA-Cambridge Workshop

  13. Building the cyber-infrastructure Leading the e-Science Goals of the China-VO for Astronomy in China KIAA-Cambridge Workshop

  14. VO-enabled LAMOST • VO-enabled • LAMOST data • LAMOST Spectral Analysis Pipeline KIAA-Cambridge Workshop

  15. LAMOST Database

  16. SDSS Mirror KIAA-Cambridge Workshop

  17. LAMOST Obs. Mode and Data Size • 4000 / 250 => 16 spectroscopes => red & blue parts =>32 CCD cameras => 4K*4K pixels => 16 bits color deep • For each sky area, 3 times exposure, 30 minutes each. 5 sky area (plate) can be observed for a night (7.5~9 hours) • Scientific data per night: • 4K*4K*2*32*5*3= 15.36 (GB) • All the collected data is about 20 GB/night • 20*200= 4,000 GB per year (ideal condition) • 4*5 year = 20 TB for the LAMOST 5 years life period KIAA-Cambridge Workshop

  18. Data Products • 2-D multi-fiber spectrum images (pravite) • 1-D spectra (to the public 18 months later) • Catalogs (to the public 24 months later) • No image (in principle) KIAA-Cambridge Workshop

  19. LAMOST Dataflow KIAA-Cambridge Workshop

  20. DB components • Tables • scientific data tables • metadata tables • log tables • admin tables • ID System • Global unique targetID • sourceID:source catalog ID, for “SDSS” it is “SDSS”, for “GSC 2.3” it is “GSC23”, etc. • sourceTargetID:the original ID for a source in the source catalog • targetID:a unique ID for each object of LAMOST observation • plateID:telescope pointing ID, i.e. sky area ID • runID:exposure ID • obsID:observation ID, an observation comprises one plate and multiple exposure • spectrographID:spectrograph ID • chipID:CCD chip ID • fiberID:fiber ID KIAA-Cambridge Workshop

  21. Scientific Data Tables KIAA-Cambridge Workshop

  22. Metadata Tables KIAA-Cambridge Workshop

  23. Archive platform and interfaces • Open Source System • LAMP (Linux+Apache/Tomcat+MySQL+PHP) • Java • Perl/C/Python • Web Browser Interface • VO service interface • TAP • SSA • SIA KIAA-Cambridge Workshop

  24. KIAA-Cambridge Workshop

  25. LAMOST archive management • VOSpace+iRODS based data management system • VO compliant • VOTable • TAP(coneSearch) • SAMP (PLASTIC) • UCD • SSA • STC (WCS) • RM • VOSpace • FootPrint • ADQL • GoogleSky&WWT (KML) KIAA-Cambridge Workshop

  26. KIAA-Cambridge Workshop

  27. KIAA-Cambridge Workshop

  28. AstroGrid DSA KIAA-Cambridge Workshop

  29. On-line Collaboration Environments • User & Group management • Data access • Proposal preparation • Call for collaborators • Mailing lists & Forums • Data & Docs Share KIAA-Cambridge Workshop

  30. Q & A ? http://www. .org More information is available at: KIAA-Cambridge Workshop

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