Gipsy 3D: Analysis, Visualization and Vo-Tools

0.06 MB·English

by  J. E. Ruiz

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GIPSY3D:ANALYSIS,VISUALIZATIONANDVO-TOOLS
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0 Ru´ız,J.E.1,Santander-Vela,J.D.1,Espigares,V.1,Verdes-Montenegro,L.1,andvanderHulst,J.M.2
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1InstitutodeAstrof´ısicadeAndaluc´ıa-CSIC,CaminoBajodeHue´tor50,18008,Granada,Spain

n 2KapteynAstronomicalInstitute,Postbus800,9700AVGroningen,TheNetherlands
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ABSTRACT 2. GIPSY
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M
I
. The scientific goalsof the AMIGA projectare basedon The Groningen Image Processing System (see
h
the analysisofasignificantamountofspectroscopic3D vanderHulstetal., 1992; Vogelaar&Terlouw, 2001),
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data. Inordertoperformthisworkwepresentaninitia- developedat the Kapteyn AstronomicalInstitute, is one
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o tive to developa new VO compliantpackage, including of the more mature and powerful systems available in
r presentcoreapplicationsandtasksofferedbytheGronin- order to analyze and visualize 3D data and to study the
t
s gen Image Processing System (GIPSY), and new ones HIcontentingalaxiesinparticular.
a based on use cases elaborated in collaboration with ad-
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vanced users. One of the main goals is to providelocal 3D datasetsare the resultof obtainingspectralinforma-

1 interoperability between GIPSY (visualization and data tion over a two-dimensional field of view. Present and
v analysis) and other VO software. The connectivitywith futurespectroscopicinstrumentation,suchasradiointer-
1 theVirtualObservatoryenvironmentwillprovidegeneral ferometers(includingALMA as wellas other futurera-
4 accessto3DdataVOarchivesandservices,maximizing diofacilities),FabryPerotinstrumentsandIntegralField
3 thepotentialforscientificdiscovery. Units in optical and NIR telescopes provides 3D infor-
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mationongasandstarsingalaxies. Thesecomplexdata
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1 provideawealthofinformation,butareatthesametime
Key words: Technique: Spectroscopic; Methods: Data
0 muchlessexploitedbytheastronomicalcommunitydue
analysis;VirtualObservatory.
9 totheircomplexity.
0
:
v AsophisticatedimageanalysissystemsuchasGIPSYis
i 1. THEAMIGAPROJECT verywellsuitedtodealwithmulti-dimensionaldatasets.
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Paradoxicallythelargenumberofparametersthatcanbe
r fixedand/ordeterminedisatthesametimeitspowerand
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TheAMIGA(AnalysisoftheinterstellarMediumofIso- its bane. Managementand selection of such parameters
latedGAlaxies)project1isaninternationalscientificcol- isnotsufficientlytransparentanduser-friendlythatnon-
laboration led from the Instituto de Astrof´ısica de An- experts can fully benefit from the software and its full
daluc´ıa-CSIC.Itfocusesonamultiwavelenghtanalysis capability.
of a statistically significant sample of isolated galaxies,
inordertoprovideapatternofbehaviourtothestudyof GIPSY needs the improvement of GUIs for user inter-
galaxiesindenserenvironments. actionwiththedata,detaileddocumentationandaneas-
ily installable and maintainable system. Preserving the
Since intensive analysis of 3D data is neededand given core functionality (i.e. applications for modelling rota-
the experience acquired by the group in radio-VO de- tioncurves,interactiveinspectionandcharacterisationof
velopments(Ru´ız,J.E.etal., 2009), a collaborationhas 3D data etc.) is of the utmost importance because this
started with the Kapteyn Institute for upgrading the functionalityis sparse and mostly absentin otherimage
GIPSY software in order to produce a friendly VO- processingpackagesforastronomy.
integrated package for high-level analysis of datacubes,
with applicability to differentmultidimensionaldatasets TherecentlyaddedPythonbindingsallowfortheunique
andwavelengths. Thefinalresultwillprovideamoreef- combinationofexistinghighlevelcoreapplicationsand
ficientwaytotreatdatacubes,andwillallowawaytoget state of the art new libraries which ensures an efficient
moreandbetterscienceoutofthedata. path to improve graphical user interfaces, include VO
functionality,andamendnewdatastructureswithoutthe
1http://www.iaa.es/AMIGA.html needtorewritethecore.
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We will study the faisability of implementing GIPSY
on the server side, providingVO services based on dis-
tributed computinganalysis for a distributed storage 3D
VO archive. The EuropeanOPTICON Network3.6and
the NVO3 projectin theUS, withparticipationofother
several groups, have provided a common desktop and
server framework to bring data processing and analysis
software into a common environment(Grosbøl&Tody,
2006). AstheGIPSY3Dprojectsharesitsphilosophy,it
mustbefullycompliantwiththisenvironmentandmust
betakenintoaccountfromtheverybeginning.
ACKNOWLEDGMENTS
Figure1. GIPSYpackagewillcommunicatewithexisting This work will be partially supported by the Spanish
VO-toolsthankstolocalinteroperability. MinistryofScienceandInnovationthankstoDGIGrant
AYA2008-06181-C02-01.
3. VOTOOLS
REFERENCES
In order to make GIPSY available to a larger scientific
user base than the specialized radio astronomy commu- Allan, A.,Boch, T.,Fitzpatrick,M., Paioro,L., Taylor,
nityitisessentialtomakeaproperconnectiontotheVO J., Taylor, M. & Tody, D., 2008, Simple Application
environment. TheVOischangingtheparadigmforhow Messaging Protocol Version 1.00. IVOA Applications
astronomicaldata are exploited: not only are more data WGWorkingDraft.
available in a uniform way, but also tools allowing ex- http://www.ivoa.net/Documents/cover/SAMP-20080625.html
ploitationoflargevolumesof databyastronomersfrom
Grosbøl, P., Tody, D., 2006, Common Astronomical
differentcommunitiesarebeingdeliveredcontinually.
SoftwareEnvironmentforDataAnalysis.Astronomical
Interoperability is the Rosetta Stone of the VO. It does Data AnalysisSoftwareandSystemsXV ASP Confer-
not only allow concurrent access to distributed, hetero- enceSeries,Vol.351
geneous data, but also enables VO software to commu-
van der Hulst, J. M., Terlouw, J. P., Begeman, K. G.,
nicate. TheSAMP2 (Allanetal., 2008) offersnew born
Zwitser, W. & Roelfsema, P. R., 1992, The Groningen
VO tools with all the functionalitiescomingfrom exist-
Image Processing SYstem, GIPSY. AstronomicalData
ingVOpackages.Sincetheycancommunicateandshare
AnalysisSoftwareandSystemsI,ASPConferenceSe-
datasets,theyformahugeVOmeta-softwareinacontin-
ries,Vol.25
uously evolving ecosystem. Local interoperability with
other VO software and access to VO archives will al- Miller, B. W, 2007, 3D Spectroscoppy and the Virtual
lownotonlyefficientmulti-wavelengthdatasetscompar- Observatory. Proceedings of the EURO-VO Workshop
isonsbutalso thepossibilitytocontributeto andbenefit AstronomicalSpectroscopyandVirtualObservatory.
from this growing ecosystem of VO software, services
anddata. Ru´ız,J.E.,Santander-Vela,J.D.,Garcia,E.,Espigares,
V.,Leon,S.,Verdes-Montenegro,L.,2009,VirtualOb-
servatory activities in the AMIGA group. Highlights
of Spanish Astrophysics V, Proceedings of the eighth
4. 3DVOARCHIVESANDSERVICES
Scientific Meeting of the Spanish Astronomical Soci-
ety (SEA) held in Santander, Spain, July 7-11, 2008.
Springerinpress.
The increasing popularity of 3D data will result in an
evergrowingnumberof3DVOarchives.Butbecauseof Vogelaar,M.G.R.,Terlouw,J.P.,2001,TheEvolution
thesizeandcomplexityofthesedatasets, dataproviders ofGIPSY–ortheSurvivalofanImageProcessingSys-
shouldsupplyon-lineprocessingandanalysis,andatthe tem.AstronomicalDataAnalysisSoftwareandSystems
sametimemusthavethecapacitytostorehugevolumes X,ASPConferenceSeries,Vol.238
of datacubes(Miller,B.W., 2007). Amongthe main is-
suesandchallengesthathavetobeaddressedare: adata
descriptionmodelfordatacubesintheVO,astoragefor-
mat unification for 3D files and standard VO protocols
for3Ddiscoveryanddatatransmission.
2SimpleAccessMessageProtocol 3NationalVirtualObservatory