ADASS, London Sep 23-26, 2007

VOExplorerVOExplorer: Visualising Data Discovery in the : Visualising Data Discovery in the Virtual Observatory Virtual Observatory

Jonathan TeddsJonathan Tedds

University of Leicester/University of Leicester/AstroGridAstroGrid//EuroVO DCA science teamEuroVO DCA science team

jat@star.le.ac.ukjat@star.le.ac.uk

Jonathan TeddsJonathan Tedds

http://www.astrogrid.org – see our demo stand upstairs

VO Explorer: VO Explorer: Noel Winstanley + Andy Lawrence & AstroGrid science teamNoel Winstanley + Andy Lawrence & AstroGrid science team

Jonathan TeddsJonathan Tedds

VO Explorer: beta release ~Nov 07VO Explorer: beta release ~Nov 07

AstroGrid front end, AstroGrid front end, part of VOdesktoppart of VOdesktop

Resource-centricResource-centric Select a search-spaceSelect a search-space Search for resourcesSearch for resources Filter these resourcesFilter these resources View selected View selected

resourcesresources Use the selectionUse the selection

– Invoke itInvoke it– Save/Bookmark/Tag itSave/Bookmark/Tag it– Export itExport it

Jonathan TeddsJonathan Tedds

Access existing X-ray cluster cataloguesAccess existing X-ray cluster catalogues

Browse through keyword metadataBrowse through keyword metadata

Jonathan TeddsJonathan Tedds

Find

Jonathan TeddsJonathan Tedds

Resources!

Jonathan TeddsJonathan Tedds

Euro-VO: Euro-VO: – Technical System withTechnical System with– Content + Resources andContent + Resources and– Operations + SupportOperations + Support

Science drivenScience driven– VO Technology CentreVO Technology Centre– VO Facility CentreVO Facility Centre– VO Data Centre AllianceVO Data Centre Alliance

Euro-VO Science advised Euro-VO Science advised via Euro-VO Science via Euro-VO Science Advisory GroupAdvisory Group

content +resources

technicalsystem

operations +support

Jonathan TeddsJonathan Tedds

If data in a simple DB can If data in a simple DB can publish to VO in ~day!publish to VO in ~day!

As demonstrated at As demonstrated at June07 EuroVO DCA June07 EuroVO DCA workshop at ESACworkshop at ESAC

For catalogues, For catalogues, images,spectra & images,spectra &

transient eventstransient events

content +resources

technicalsystem

operations +support

Jonathan TeddsJonathan Tedds

Description

Jonathan TeddsJonathan Tedds

Filter

Jonathan TeddsJonathan Tedds

Query on position

Explore by position: AstroScopeExplore by position: AstroScope

Jonathan TeddsJonathan Tedds

Plastic/SAMP – visualise selected dataPlastic/SAMP – visualise selected data

Jonathan TeddsJonathan Tedds Enabling VO ScienceEnabling VO Science

HelioScope displays the results of time queries submitted to Simple Time Access Protocol (STAP) web services – E.Auden, S.Dalla + VOevent (e.g. A.Allan)

STAP specification: http://wiki.astrogrid.org/bin/view/Astrogrid/SimpleTimeAccessProtocol

STAP query parameters:• Start / stop datetimes

(mandatory)• Data format (mandatory)• Instrument ID• Time resolution • Data ID of individual data

products• Position RA & Dec (for

astronomical events)• Size of search box around

position RA & Dec• Band – wavelength range

Jonathan TeddsJonathan Tedds

Access all extended 2XMM X-ray sourcesAccess all extended 2XMM X-ray sources

Make own X-ray cluster candidate catalogueMake own X-ray cluster candidate catalogue Filter large multiwavelength archives Filter large multiwavelength archives

remotely:remotely:– Create manageable science subsetsCreate manageable science subsets

Jonathan TeddsJonathan Tedds Enabling VO ScienceEnabling VO Science

247K detections 247K detections 192K unique 192K unique sourcessources

– 520 sq.deg. / 330 sq.degs 520 sq.deg. / 330 sq.degs excluding overlapexcluding overlap

– Full catalogue product set Full catalogue product set availableavailable

– World’s largest ever X-ray World’s largest ever X-ray catalogue – catalogue – see poster bysee poster by C.Page et al.C.Page et al.

Just Out (Aug07)Just Out (Aug07): THE 2XMM CATALOGUE: THE 2XMM CATALOGUE

Jonathan TeddsJonathan Tedds

Find

Jonathan TeddsJonathan Tedds

Columns

Jonathan TeddsJonathan Tedds

Filter columns

Jonathan TeddsJonathan Tedds

Use

Jonathan TeddsJonathan Tedds

Query

Jonathan TeddsJonathan Tedds

Help!

Jonathan TeddsJonathan Tedds

Save as format

Jonathan TeddsJonathan Tedds

Save results

Jonathan TeddsJonathan Tedds Enabling VO ScienceEnabling VO Science

Correlation with SDSSCorrelation with SDSS

Select SDSS galaxies within 1 arcmin of 411 X-ray Select SDSS galaxies within 1 arcmin of 411 X-ray positionspositions– photometry (ugriz), photometric redshiftsphotometry (ugriz), photometric redshifts– spectra, spectroscopic redshiftsspectra, spectroscopic redshifts– colour thumbnail imagescolour thumbnail images

Visual inspection of images, spectroscopic and Visual inspection of images, spectroscopic and photoscopic redshiftsphotoscopic redshifts

Workflows Workflows – see E.Gonzalez-Solares talk– see E.Gonzalez-Solares talk

•Python, Perl, IDL scripts•Single archive image search•Cone search for multiple, user defined archives•Sextractor script – generate catalogue from images•Montage - mosaic tool

•Taverna•Graphical interface•Embed existing code (any language)

Workflows Workflows – see E.Gonzalez-Solares talk– see E.Gonzalez-Solares talk

•Python, Perl, IDL scripts•Single archive image search•Cone search for multiple, user defined archives•Sextractor script – generate catalogue from images•Montage - mosaic tool

•Taverna•Graphical interface•Embed existing code (any language)

Workflows Workflows – see E.Gonzalez-Solares talk– see E.Gonzalez-Solares talk•Python, Perl, IDL scripts

•Single archive image search•Cone search for multiple, user defined archives•Sextractor script – generate catalogue from images•Montage - mosaic tool

•Taverna•Graphical interface•Embed existing code (any language)

Jonathan TeddsJonathan Tedds Enabling VO ScienceEnabling VO Science

Correlation with SDSSCorrelation with SDSS

Spectroscopic z = 0.223 (Lamer+, in prep)Spectroscopic z = 0.223 (Lamer+, in prep)

Jonathan TeddsJonathan Tedds

AstroGrid front end, AstroGrid front end, part of VOdesktoppart of VOdesktop

Resource-centricResource-centric Select a search-spaceSelect a search-space Search for resourcesSearch for resources Filter these resourcesFilter these resources View selected View selected

resourcesresources Use the selectionUse the selection

– Invoke itInvoke it– Save/Bookmark/Tag itSave/Bookmark/Tag it– Export itExport it

http://www.astrogrid.org – see our demo stand upstairs

Jonathan TeddsJonathan Tedds

Better stop…!Better stop…!