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Yongheng Zhao, Chenzhou Cui

LAMOST. China-VO VO-oriented LAMOST. Yongheng Zhao, Chenzhou Cui. 2002-10-17. LAMOST. Brief Introduction of LAMOST Brief Introduction of BADC Virtual Observatory of China VO-oriented LAMOST. LAMOST. LAMOST. MAIN CHARACTERISTICS 有效通光孔径 (Clear aperture): 4m

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Yongheng Zhao, Chenzhou Cui

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  1. LAMOST China-VO VO-oriented LAMOST Yongheng Zhao, Chenzhou Cui 2002-10-17

  2. LAMOST • Brief Introduction of LAMOST • Brief Introduction of BADC • Virtual Observatory of China • VO-oriented LAMOST

  3. LAMOST LAMOST MAIN CHARACTERISTICS 有效通光孔径 (Clear aperture): 4m 视场角直径 (Field of view): 5° 焦面线直径 (Focal plane): 1.75m 焦距 (Focal length): 20m 光纤数 (Number of fibers): 4000 光谱覆盖范围 (Spectral range): 370～900nm 光谱分辨率 (Spectral resolution):1～ 0.25nm 观测天区 (Sky coverage): Declination -10  to +90

  4. LAMOST 固定球面主镜MB Fixed Spherical Mirror 改正镜MA Corrector Mirror 焦面 Focal Plane 光纤 Fiber Optics 光谱仪 Spectroscopies LAMOST

  5. LAMOST LAMOST • Scientific aims : • Extra-galactic spectroscopic survey — Large scale structure of the universe • Stellar spectroscopic survey — Structure of the Galaxy • Cross identification of multi-waveband surveys —Virtual Observatory LAMOST 星系红移巡天 样品空间分布图 （数值模拟结果） Sample space distribution of the LAMOST galaxy survey (numerical simulation results)

  6. LAMOST • Brief Introduction of LAMOST • Brief Introduction of BADC • Virtual Observatory of China • VO-oriented LAMOST

  7. LAMOST World Data Center for Astronomy Beijing Astronomical Data Center (BADC)

  8. LAMOST BADC Resources • CDS/ADC catalogs • USNO-A1.0 • USNO-A2.0 • Hipparcos/Tycho catalogs • RealSky atlas • DSS • DSS-II • Einstein X-ray archives • ROSAT X-ray archives • NASA/ADS mirror • Astronomy Yellow page • Software warehouse • 2MASS • BATC (Beijing-Arizona-Taiwan-Connecticut ) • SDSS SX will be mirrored as soon as it is available

  9. CPU MEM Capacity NIC Intel P4 1.2GHz×10 1GB×5 80GB+20GB×4+1TB×4=4.16TB 100 Mbps D-link Switcher Cost <200, 000 RMB (24, 000 USD) LAMOST Hardware Environments RAID 5 ADS mirror server (8-1) × 80 GB=560 GB

  10. LAMOST • Brief Introduction of LAMOST • Brief Introduction of BADC • Virtual Observatory of China • VO-oriented LAMOST

  11. LAMOST China-VO The Advantages of Building China-VO • Acquire data and technologies from other IVOA partners • Share our data (LAMOST, SST, FAST, BATC …) with international astronomers • Provide a convenient portal for native users accessing national and international archives • Bring up a group of VO-oriented astronomers, engineers and students • Education outreach

  12. Web Service Web Service Statistic and Analyses Mining & Discovery SQL, XQuery SkyQuery, AML Portal Simple Search Advanced Search PHP Processing C++ Java XML VOTable XML FITS Processing XML JPG Processing XML … Data Data Data Data LAMOST VO Resource Manager China-VO Java Servlet HTTPS OGSA

  13. LAMOST China-VO Characteristics of China-VO Based on core services (Metadata services, Simple search patterns, Simple functions) provided by IVO, we try to realize: • Automatic processing for multi-fiber spectrum data • Spectrum line automatic extraction • Automatic classification of Spectrum data • Redshift measurement • Cross-identification between spectrum data and other data • Visualization Focusing on Spectrum Automatic Processing and Relevant Technology

  14. LAMOST China-VO • Current Partners • Department of Astronomy, Beijing Univ. • Beijing Astrophysical Center, CAS-PKU • Astrophysical Center, Tsinghua Univ. • Supercomputing Center, CAS • Institute of Computing Technology, CAS

  15. LAMOST • Brief Introduction of LAMOST • Brief Introduction of BADC • Virtual Observatory of China • VO-oriented LAMOST

  16. LAMOST VO-LAMOST VO provides opportunities and challenges to LAMOST • LAMOST will select observing objects from VO Multi waveband sky survey archives, i.e. FIRST, NVSS, 2MASS, IRSA , SDSS, POSS… • LAMOST will enhance astronomical spectrum resources greatly with its output LAMOST vs. SDSS = 4000 : 600

  17. LAMOST VO-LAMOST Just from the beginning: VO-oriented LAMOST metadata model VO-oriented LAMOST data model VO-oriented Atomic services and toolkits Preserve metadata as much as possible

  18. LAMOST Roadmap for China-VO • 2002.7 ：Draft of China-VO Architecture. • 2002.10：Online access for most collected archives; Join in IVOA. • 2003.1 ：System requirement analyse and scientific goals definition; Architecture design; Initial web services design. • 2003.5 ：Initial online access to China-VO • 2003.8 ：Initial China-VO functional demo • 2003.10：VO-oriented LAMOST Data Model (LmstD) 1.0 • 2004.1 ：China-VO 1.0 • 2004.10：LmstD 2.0 • 2005.1 ：China-VO 2.0

  19. LAMOST Now, We urgent need: Experts in data-based computing Astronomy Attendees with skills of: XML, OGSA, Java, Database Cooperation National and International Money

  20. LAMOST References and Links China-VO http://www.china-vo.org LAMOST http://www.lamost.org Beijing Astronomical Data Center http://badc.lamost.org National Virtual Observatory (US) http://www.us-vo.org

  21. LAMOST

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