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Introduction: Data analysis

Intro-data-analysis: overview

This page provides an introduction to using AstroGrid for data analysis purposes. Under Available Tools you will find a table providing a brief summary of some of the tools available through AstroGrid which can be used for data analysis. Under Data Analysis: Examples you will find links to examples, demonstrating how to use some of these data analysis tools.
Available tools

The table below lists the tools that are available via AstroGrid. A tool can be run individually via the Task Launcher, or can be part of a Workflow.

Tool name
Documentation
Comments
Galaxev  Spectral evolution of stellar populations
Pegase  Computes the spectral evolution of galaxies
S-Extractordoc
 Extract objects from FITS images
BPZ  Compute photometric redshifts from photometric catalogue
ANNz  
HyperZ  Compute photometric redshifts from photometric catalogue
Cross Matcher
doc Cross match catalogues based on position in the sky
Time Cross Matcher
doc Cross match catalogues based on time
Swarp
  Image mosaicing and stacking
Starburst99  
SkyBot  
PegaseHR  
STILTSdoc
Table matching, maths, conversions etc.
Data Analysis: examples

The following is a list of data analysis examples which demonstrate how to use some of the tools which are available through AstroGrid. Click on the linked titles to find out more information.

  • Catalogue crossmatch. One of the most common operations after the users has obtained some catalogues from AstroScope or from a query to a particular service is to carry out a cross match between then. This example explains the different options available to perform a crossmatch between catalogues.
  • Extracting objects from images. This example explains how to use SExtractor in the server in order to obtain a catalogue of objects in an image (coming soon).