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Page 1: SDSS Virtual Data

James Annis 1

SDSS

GriPhyN Meeting (Chicago August 2001)

SDSS Virtual DataCluster Catalogs

Find clusters of galaxiesCatalog level virtual dataTestbed design

Weak Lensing in the Southern SurveyWeak lensing from image shape parametersDrives construction of coadded image dataThe coadd is data intensive

Correlation FunctionsAuto and cross correlation of galaxiesCPU intensive, monte carlo testing more soWill break up galaxy sample into many sub-samples

High surface brightness/Low surface brightnessBlue galaxies/red galaxies

Saving and distribution of results at a premium

Page 2: SDSS Virtual Data

James Annis 2

SDSS

GriPhyN Meeting (Chicago August 2001)

Virtual Data: Cluster Finder

What Virtual Data is available?

Virtual Data URL

Resource Manager

Request Manager

Kent page http://sdsslnx.fnal.gov:8015

Visualization URLFind Cluster Richness and Redshift

Derived Data Hook

Data Catalog

Transformation Catalog

Derived Data Catalog

TAMSDSS Data DM

kdSDSS Cluster Finder

SDSS Cluster Finder

Cluster Catalog


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