Yuji SHIRASAKI

National Astronomical Observatory of Japan

yuji.shirasaki@nao.ac.jp

Current Status of Japanese Current Status of Japanese Virtual Observatory (JVO)Virtual Observatory (JVO)

JVO Members

Project Scientists

NAOJ• Y. Mizumoto• M. Ohishi• Y. Shirasaki• M. Tanaka• S. Honda

ICRR• N. Yasuda

System Engineers

Fujitsu Ltd.• Y. Ishihara• K. Abe• J. Tsutumi

DB Advisor

Ochanomizu U.• Y. Masunaga

DB maintained by NAOJ• Subaru 8.2m Optical-Infrared Telescope• Kiso 105cm Schmidt Camera• Okayama 188cm Optical Telescope• Nobeyama 45m Radio Telescope• Nobeyama Millimeter Array• Nobeyama Radioheliograph • VSOP• VERA • ALMA

Subaru

Nobeyama 45m

DB maintained by JAXA (NASDA+NAL+ISAS)

• ASCA X-ray astronomy satellite• YOHKO solar physics satellite• Ginga X-ray astronomy satellite• HALCA VLBI satellite• Geotail geomagnetosphere satellite• Akebono aurora observation satellite• ASTRO-F Infrared satellite• ASTRO-E2 X-ray satellite• SOLAR-B

ASCA

HALCA

YOHKO

Goal of the JVO Project

=

Researchers

10Gbps Super SINET, linked with GRID technology

JVOJVO

MetaDB

ScienceDB

MetaDB

ScienceDB

Distributed server system

GRID Registry

1. Seamless access to the distributed astro DBs– DB federation under Grid technology

GRID GRID

2. User-friendly data analysis environment– Accelerate multi-wavelength study

3. Robustness to a heavy access rate– Distributed server system for search and

analysis services on the Grid network.

JVO Prototype 1• Federation of the distributed data bases

– Globus Tool Kit 2 (user authentication, file transfer, remote job submission)– UDDI (to find a requested DB)

• Define a astronomical query language (JVOQL)– region specification, image request, cross-matching…

• Development of user interface– Query Language (QL) editor– VOTable Viewer & Plotter

• Science demo– Cosmic string search through the gravitational lens effect

Java2SE 1.4

Apache Tomcat

soapuddi

JDBC

UDDI Registory / Servlet Engine

Java2SE 1.4

JVO Server

UDDI4J

JVO Controller

Globus Toolkit (Server)

JVO Service(count)

SQLlibrary

Java2SE 1.4

Maintenance Tool

UDDI4J

UDDI Maintenance Tool

Hypertextcontents

Solaris8 (Possible at Linux)

Redhat Linux

JVO Service

ORACLE

DB Service

Free Software

Commercial Software

In House Software

Function

ApacheＳＯＡＰ

① ServletDownLoad

Globus Toolkit (Client)

Redhat Linux

PostgreSQL (DBMS)

DB Service

The following free software is included by globus toolkit.• OpenSSL (Secure Socket Library)• OpenLDAP (LDAP Server)• wu-ftpd (ftp server)

JVO Prototype System Architecture

③ Find Service

Netscape Communicator

Java2 Plugin

JVO Client(servlet)

JVO Client

② RequestObservation

Monitoring

UDDIData

SUBARUSupCamz-band• get & parse GSDL

• pre condition check• execute Service• post condition check

• register• update• delete

GSDL(copy)

JVO Service(select)

SQLlibrary

JVO Service(image)

JVO Service(X match)

ImageData

GSDLGridFTP

ImageData(copy)

⑥ spawn Service

⑤ execute Service

Check status

SUBARUDataBase

JVOController

Globus Toolkit

AVO

Globus Toolkit

NVO

Internet

ImageData

SUBARUSupCami-band

Globus Toolkit (Server)

JVO Service

SQLlibrary

SQLlibrary

JVO Service(count)

JVO Service(select)

Copy imate data by GridFTP

Copy imate data by GridFTP

JVO Service (X match)

JVO Service (image)

③ get GSDL

④ Get GSDL by GridFTP

GSDL

⑦ issue SQL

④’ Get GSDL by GridFTP

⑦’ issue SQL

⑤’ execute Service

ImageData(copy)

SUBARUDataBase

Gb Ether

⑥’ spawn Service

Globus Toolkit (Server)

JVO Service

SQLlibrary

JVO Service(select)

JVO Service (X match)

GSDL

Redhat Linux 2MassDataBase

PostgreSQL

DB Service

2Mass DB

ImageData(copy)

ImageData

JV

O S

yste

mD

B

Meta DB

Astro Data

Meta DB

Astro Data

JVO Prototype 1 System Architecture

Us

er

Interfac

e

Registry（ UDDI）

• JVO QL Editor• Resource Viwer

Query InterfaceUser Authentication

Science Dcmo

• Gravitational Lens Search

Analysis interface

JVOQLParser

Scheduller

Executer

Co

ntro

ller

• VOTable Viewer

• Plotter

• Image Viewer

Result Viwer

Analysis Server

• login

GSI

JVOQLGlobus-job-submit

VOTableFITSGridFTP

JVOQL, VOTableJDBC

VOTable, FITSJava ServletJSPJava Beans

SOAP

JVOQLVOTable, FITSJava Servlet, JSPJava Beans

Web Browser

JVO Query Language (Catalog+Image)Create view myEROtable asSelect s.Bmag, s.Rmag, t.Hmag, t.Kmag, …, sr.BOX(POINT(s.ra,s.dec),w,h) as Rimage, tk.BOX(POINT(s.ra,s.dec),w,h) as Kimage, …From SUBARU s, 2MASS t, …, SUBARU.R sr, 2MASS.K tk, …Where XMATCH(s,b,…) < 3 arcsec and (s.Rmag – t.Kmag) > 6 mag and BOX(POINT(ra0,dec0), w0, h0) and …

Create view with the user specified name in JVO system.

Select attributes from each catalog server. Column names can be expressed in UCD.

Select cutout images from each image data server.Image area can be specified by BOX or CIRCLE operand.

Select the catalog server.

Select the image data server.

Cross-match distributed catalogs.

Query condition based on distributed catalog.

Specify search area with the same syntax as cutout image specification.

JVO Query Language (Image)Select s.a, t.a, …From SUBARU.R s, 2MASS.K t, …Where (s.AREA() OVERLAP t.AREA()) as a

User Authentication

JVO Control Page

Open a JVOQL Editor

Load a query file

Open a monitor window

Run

JVOQL Editor

Catalog/Table/Column selection

set search region　

set cross match condition

set image size

VOTable Viewer & Plotter

Gravitational Lens Search Demo

Scientifc objective:

Cosmic string search through the gravitational lens effect

Looking for pair objects satisfying the following conditions:

Separation angle < 5”

Same morphology

Similar brightness

Similar color

Aligned along a string (straight line ?)

This demo searches pair objects satisfying the checked conditions and the corresponding image data are also retrieved.

Produced at a phase transition of early universe ?

Density = 1022 g/cm Gravitational Lens Effect

Features:• < 5 arcsec

• No magnification

• No distortion

• Observed as twins of a galaxy

Gravitational Lens Search Demo (1/2)Query Language Editor

separation angle

color difference

Parameter range

Catalog/Table/Column selection

Gravitational Lens Search Demo (2/2)

jpeg images for 3 bands

3-color composite image

SED

Color-Color plot

Summary: Toward JVO Prototype 2

• Globus TK3

• File Transfer ---- GridFTP and/or GSI SFS

• Remote Job submission ---- GRAM

• Implement Resource Metadata in JVO registry

• Analysis services (SExtractor, Photometry, Image Subtraction… )

2001 2002 2003 2004 2005 2006 .JVO project start

Prototype I Prototype II Practical System

Experimental service start

Road　Map