Functions and Demo of Astrogrid 1.1

China-VO

Haijun Tian

Outline

The brief introduction The setting of AG’s running The main components and functions of AG

The assistant software tools The demo of AG1.1

Outline

The brief introduction The setting of AG’s running The main components and functions of AG The assistant software tools The demo of AG1.1

The Brief introduction of AG

Astrogrid is a £7.7M project aimed at building a data-grid for UK astronomy.AstroGrid is a Virtual Observatory (VO), which can broadly be defined as collection of interoperating astrophysical data archives and software tools accessible through the internet. AG is particularly useful for comparison and integration of data from diverse sources, for example in multiwavelength studies.

The goals of the AG

A working datagrid for key UK databases High throughput datamining facilities for interrogating those databases A uniform archive query and data-mining software interface The ability to browse simultaneously multiple datasets A set of tools for integrated on-line analysis of extracted data A set of tools for on-line database analysis and exploration A facility for users to upload code to run their own algorithms on the datamining machines An exploration of techniques for open-ended resource discovery

Outline

The brief introduction The setting of AG’s running The main components and functions of AG The assistant software tools The demo of AG1.1

The Setting of AG’running

Web Browser:

Mozilla >= 1.7.2 or I.E. >=6.0 or Firefox >=1.0.4

JRE>= 1.4.2 Java Webstart >= 1.4.2

Outline

The brief introduaction The setting of AG’s running The main components and functions of AG The assistant software tools The demo of AG1.1

Main components of AG

Myspace: Storing files

Data and results (in standard VO format ) can be accessed or stored securely and remotely by user This storage space is physically distributed on several AstroGrid machines

Resources: Locating resourcesTasks search and catalogs search (return a maximum of 100 entries)

Main components of AG

Catalog Search

Main components of AG

Tasks search

Main components of AG

Queries: Building a query Load existing queries from MySpace.Cut and paste queries from a file.Create new queries from scratch.Create new queries locating a suitable resource first, then using its metadata to create Click and paste buttons. Use the "Select a Table" button."ADQL helpers" let you click and paste ADQL keywords to the entry area.

Main components of AG

Workflows : Building and edit a workflow

Job Monitor: Monitoring job execution

Help

Two fully functioning interfaces: Web based portal

Java WebStart clientside Workbench

Outline

The brief introduction The setting of AG’s running The main components and functions of AG The assistant software tools The demo of AG1.1

Main Functions of AG

AstroGrid Science Services :

RedShiftMaker

Solar Movie Maker

Color Cutter

Main Functions of AG

AstroGrid Science Services :

RedShiftMaker

Solar Movie Maker

Color Cutter

RedShiftMaker

Workflow

RedShiftMaker

Astrogrid Dashboard

RedShiftMaker

User has to input the required coordinates (RA and Dec) in decimal degrees (J2000). These coordinates will be used to query the WFS database for images which have covered that position.

RedShiftMaker

Jobs Monitor

RedShiftMakerOutput files:

The output files are saved into MySpace and are the following:

Images (if user selected to save them) in votable/intwfs/Run*.fits SExtractor files in votable/sex_?.vot

Band merged catalogues in votable/xmatch_*.vot

Photometric redshift catalogue (containing all the information

from previous files) in votable/zphot*vot

RedShiftMaker

Main Functions of AG

AstroGrid Science Services :

RedShiftMaker

Solar Movie Maker

Color Cutter

Solar Movie Maker

This Astrogrid science service allows a user to make a movie of solar images by means of a simple interface. Datasets are: SOHO/EIT and TRACE.

Input parameters

Instrument name: either 'trace' or 'eit' Start date/time and end date/time (yyyy/mm/ddThh:mm:ss.000)

Solar Movie Maker

Main Functions of AG

AstroGrid Science Services :

RedShiftMaker

Solar Movie Maker

Color Cutter

Color Cutter

This Astrogrid science service allows the user to select IR and optical objects by region and by colour. It is available via the Workbench or as a Parameterised Workflow from the Portal home page.

Color Cutter

Parameterised Workflow

Color Cutter

Input parameters

Color Cutter

Output files:CCut_RA56.7Dec23.867_1.0 files j_m-k_m.gt.1.0.vot(IR); i-z.gt.2.0.vot (optical);j_m-k_m.gt.1.0_and_i-z.gt.2.0.vot* (matched, with colours added).

Outline

The brief introduaction The setting of AG’s running The main components and functions of AG The assistant software tools main The demo of AG1.1

Aladin

Aladin is an interactive software sky atlas allowing the user to visualize digitized images of any part of the skyData Sources :SIMBAD, NED, VizieR, Yourselves’ data

etc Aladin is particularly useful for multi-spectral cross-

identifications of astronomical sources, observation preparation and quality control of new data sets. The Aladin’s Plugins : VOPlot (VO-India ) etc.

Aladin

Topcat

Topcat is an interactive graphical viewer and editor for tabular data. It is not restricted to astronomical applications.

The ways to view and analyse tables: a browser for the cell data themselves,

viewers for information about table and column metadata, and facilities for plotting, calculating statistics and joining tables using flexible matching algorithms.

Topcat

Input formats

a. FITS TABLE (ASCII table) or BINTABLE (binary table) extensions b. VOTables in any of the format variants (TABLEDATA, FITS or BINARY) c. ASCII tables in a number of variations d. Comma-Separated Values e. Results of SQL queries on relational databases

Topcat

output formats:

a. FITS BINTABLE (binary table) b. VOTables in any of the format variants (TABLEDATA, FITS or BINARY) c. Plain ASCII text d. Comma-Separated Values e. HTML TABLE element d. LaTeX tabular environment e. New table exported to an SQL-compatible relational database

Topcat

The demo of AG1.1

The brief introduaction

The setting of AG’s running

The main components and functions of AG

The assistant software tools

The demo of AG1.1

• Summary

• Prospect

Summary & Prospect

•Thanks a lot !

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