Nov. 25-27China-VO 2005 1

现状与研究进展 崔辰州

China-VO Project中科院国家天文台

The Chinese VIRTUAL OBSERVATORY

Nov. 25-27China-VO 2005 2

报告内容• 虚拟天文台历史与现状• 国际虚拟天文台联盟（ IVOA ）• 中国虚拟天文台（ China-VO ）

China-VO 2005

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).

China-VO 2005

VO concept (cont.)• The VO is:

A set of international standards to share complex dataA modular set of tools to work with distributed dataA simple environment to publish data toAn essential part of the research astronomer’s toolkitA catalyst for world-wide access to astronomical archivesA vehicle for education and public outreach

• The VO is not:A replacement for building new telescopesA centralized repository for dataA data quality enforcement organization

Nov. 25-27China-VO 2005 5

VO 历史回顾• 1990s:NASA 成立了按波长划分的科学数据中心，多个地基数字巡天项目开始• 1999 年 4 月 , 美国理论、计算和数据发现十年规划调研专家组成立

– Szalay, Prince, Alcock 提出 “ National Virtual Observatory” 的概念

• 1999 年 11 月 , NVO 在 JHU 组织研讨会• 2000 年 2 月 , 第二届 NVO 研讨会在 NOAO 召开• 2000 年 6 月 , “Virtual Observatories of the

Future”在 Caltech 召开，褚耀泉参加会议• 2001 年 2 月 , “ 新千年的天文学与天体物理学”发表• 2001 年 9 月 , 美国 NSF 宣布对 NVO 项目的资助• 2002 年 6 月，国际虚拟天文台联盟成立

Nov. 25-27China-VO 2005 6

International VO Alliance

Nov. 25-27China-VO 2005 7

International VO Alliance• The IVOA brings together the

astronomers, developers, and managers of the VO initiatives world-wide– Agreements on standards for data

access (VOTable, catalog queries, image retrieval, resource descriptions, etc.)

– Coordination of development activities– Sharing of software– Sharing of experience

Nov. 25-27China-VO 2005 8

International VO Alliance

China-VO 2005

International VO Alliance

• Working GroupsResource Registry, Content Descriptors (UCD), Data Modeling, Data Access Layer, VO Event, VO Query Language, Grid & Web Services, Standards & Processes, VOTable

• Interest GroupsArchitecture, Applications, Theory, GGF Astro-RG, Data Curation & Preservation

• SpecificationsVOTable, Resource Metadata, ADQL, VOEvent, Space-Time Coordinate, SkyNodeInterface, SIA, SSA, etc.http://www.ivoa.net/Documents/latest/

Nov. 25-27China-VO 2005 10

IVOA Roadmap

Nov. 25-27China-VO 2005 11

IVOA Events

14-19 May. 2006

Interoperability Meeting Victoria, Canada

17-22 Aug. 2006

IAU Special Session 3ab: The Virtual Observatory in Action

Prague, Czech

18-22 Sep. 2006

Small Projects Meeting & Interoperability Meeting

Moscow, Russia

May. 2007

Interoperability Meeting Kunming, China

Nov. 25-27China-VO 2005 12

AstroGrid: Science AstroGrid: Science Use ReadyUse Ready

Nicholas WaltonAstroGrid Project Scientist

IoA, Cambridge

A PPARC funded project

Nov. 25-27China-VO 2005 13

First Science Paper from VO• A&A 424, 545-559 (2004)

Discovery of optically faint obscured quasars with Virtual Observatory tools

• The AVO science team discovered 31 previously undetected powerful supermassive black holes in the so-called GOODS (Great Observatories Origins Deep Survey) fields.

Nov. 25-27China-VO 2005 14

Second Science Paper from VO

• Accepted by A&A• Luminous AGB stars in

nearby galaxies: A study using Virtual Observatory tools

• Searching for very luminous AGB stars with J − Ks > 1.5 mag and H − Ks > 0.4 mag in the LMC, SMC, M31, and M33 from 2MASS data.

Nov. 25-27China-VO 2005 15

The Next Steps: Participant in VO Science Demos 2005

• AstroGrid: Consortium meeting: Today. 14 Dec 2004

Galaxy distances Brown dwarf discovery Solar coronal mass ejections

• Euro-VO: ESAC, Madrid: 25-26 Jan 2005 Star formation histories AGB to PN transitions

• A Widening range of capabilities, data, applications Increasing scientific usefulness

• GOAL: end 2005 – science papers enabled by VO

Nov. 25-27China-VO 2005 16

Next Steps: 2005-2007

• AstroGrid at the thresh hold of enabling significant science– Prioritisation on automating bulk workflows and data

access– Working in partnership to link to additional functionality

• Key science programmes for AstroGrid to 2007 and AstroGrid in the Euro-VO being formulated

– Focus on supporting major new (<2007) data flows• e.g. VISTA, Planck, Herschel, VLT

• Science is a major driver in AG2 and VOTECH (Euro-VO) •GOAL: 2010 for >90% of all science to be VO

enabled

China-VO 2005

IVO Highlights (I)• AstroGrid V1.0 (2005.5)

The first public release of VO infrastructureMySpace, Workflow, Query Builder, Job Monitor, Resource queryingTopCat and AladinScience Services: Solar Movie Maker, and Redshift Maker

• AstroGrid V1.1 (Sep, 2005)Science Services - Color Cutter, and AstroScopemore robust and reliablebetter documentationhttp://www.astrogrid.org/release/

China-VO 2005

IVO Highlights (II)

• Aladin v3.0 multiview: an interactive software sky atlas developed by CDSMultiView, multiProjectionResamplingBlinking: builds on the fly image sequences (slow movies)GIF, JPEG and PNG supportCut graph: along any segmentCross match algorithm: for better object catalog analysis

China-VO 2005

IVO Highlights (III)

• US-VO: DataScope– Discover and Explore Data in the Virtual Observatory– discover information available on a given source and

location– Astronomical Data Grid

– http://heasarc.gsfc.nasa.gov/cgi-bin/vo/datascope/init.pl

Nov. 25-27China-VO 2005 20

VOs

• European Space Agency VO • Urania Astrophysical Virtual Observatory • Spectroscopic Virtual Observatory • Virtual Solar-Terrestrial Observatory • Planetary Virtual Observatory and Laboratory • Virtual Solar Observatory • Virtual Auroral Observatory • Virtual Heliospheric Observatory

Nov. 25-27China-VO 2005 21

“ 中国虚拟天文台”（ China-VO ）

• 为中国天文学家提供使用国际数据的先进平台和门户• 从国际上获取数据和相关技术• 将我们的数据提供给天文学界

– 未来： LAMOST 、 SST 、 FAST– 目前： BATC 、太阳磁场、 216…– 过去：天文底片（？）

• 培养新一代面向“虚拟天文台”的科技队伍• 交叉学科和公众教育

Nov. 25-27China-VO 2005 22

China-VO 重点研发领域 • China-VO 系统平台建设• 国内外天文数据的统一访问• 现有天文工具的虚拟天文台集成• 虚拟天文台基础上的公众教育• 天文设备的虚拟天文台集成

Nov. 25-27China-VO 2005 23

•2001.11 首次中国虚拟天文台研讨会•2002.7 “China-VO” 概念提出 •2002.10 “China-VO” 成为 IVOA成员•2003.2 第一个 grid service, “Hello China-VO” 开发完成•2003.5 China-VO “ConeSearch” 服务成功完成•2003.6 China-VO系统设计•2003.9 第二届中国虚拟天文台研讨会•2003.10 China-VO 第二个 GS初步实现•2003.11 IVOA Small Projects Meeting•2004.5 VOFilter开发完成•2004.9 IVOA Small Projects Meeting （印度）•2004.12 第三届中国虚拟天文台研讨会（武汉）•2005.11 China-VO 2005

China-VO发展史

Nov. 25-27China-VO 2005 24

China-VO annual meetings

• 2001. 9. 3-4 北京• 2003. 9. 25-26 北京• 2004. 12.1-5 武汉• 2005. 11.25-27 威海

Nov. 25-27China-VO 2005 25

China-VO Annual Meeting (2001)

Nov. 25-27China-VO 2005 26

China-VO Annual Meeting (2003)

Nov. 25-27China-VO 2005 27

China-VO Annual Meeting (2004)

Nov. 25-27China-VO 2005 28

China-VO 的体系结构

Nov. 25-27China-VO 2005 29

Nov. 25-27China-VO 2005 30

LAMOST & China-VO

图象处理

LAMOST

光谱分析

输入星表工作星表

科学研究

China-VOIVO

Nov. 25-27China-VO 2005 31

合作单位• 国家天文台 (NAOC)

– 北京、云南、乌鲁木齐• 上海台、紫台…• 清华大学天体物理中心• 北京大学天文系• 北京师范大学天文系• 南京大学天文系• 中国科学技术大学天体物理中心• 中科院高能所• 北京天文馆• 华中师范大学• 中科院计算机网络信息中心• 清华大学、天津大学、兰州大学、山东大学

Nov. 25-27China-VO 2005 32

China-VO in 2005

• China-VO prototype II:– 2MASS-OB Associations-Galactic spiral arms

• China-VO portal:– A uniform data-accessing user interface

• VOFilter:– Bridging VO and desktop application

• SkyMouse:– A smart VO resource search engine

• China-VO Cross-match service– advanced catalog cross match toolkit

• WDC-Astronomy– Astronomical warehouse for Chinese astronomers

Nov. 25-27China-VO 2005 33

China-VO 2006

• 初步可运行的 China-VO平台• PhotoZ－ SED科学范例• 可运行的用户界面工具• 可运行的交叉证认服务• 实用的 SkyMouse• 1 － 2 个国内试点• ...

Nov. 25-27China-VO 2005 34

路线图• 2005-2006

– 原型系统– 主要节点单位的数据服务

• 2007-2008– 国内主要数据节点– 与国外（ IVOA ）互联

• 2009-2010– 主要计算节点– 重要设备– 相关单位– IVOA

NAOC YNAO

PKU

…

InternetCNGrid

SSC SCCAS

CNIC

THU…

IVONVO

…AstroGrid

AVO

China-VO

USTC

Nov. 25-27China-VO 2005 35

Q & A

?www. .org

The Chinese VIRTUAL OBSERVATORY