Use of CharDM in an archive of velocity cubes
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Use of CharDM in an archive of velocity cubes

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Use of CharDM in an archive of velocity cubes Use of CharDM in an archive of velocity cubes Presentation Transcript

  • Use of CharDM in anarchive of velocity cubes! ! Data Modelling Session! ! Jose Enrique Ruiz! IAA-CSIC! ! October 20th 2011! 2011 IVOA Fall Interop Meeting - Pune! 1
  • Who am I ?!Instituto Astrofísica de Andalucia - CSIC! 2
  • AMIGA Group!Analysis of the interstellar Medium of Isolated Galaxies!! Statistical baseline of isolated galaxies to compare! ! with the behaviour of galaxies in denser environments! Multi study of ~1000 galaxies! +! Need of intensive and complex analysis of 3D data! 2D spatial + 1 Velocity! IAA-CSIC! Uuiv . Granada, Obs. Marseille, Obs. Paris, NAOJ, ! FCRAO, UNAM, Univ. Edinburgh, IRAM, ESO,! Kapteyn Astronomical Institute.! ! P.I. Lourdes Verdes-Montenegro! http://amiga.iaa.es! 3
  • B0DEGA Project!B0DEGA Below 0 DEgrees GAlaxies!! Molecular gas properties of a survey of nearby galaxies.! 30 processed and reduced datacubes of galaxies! ! ! P.I. : D. Espada! Legacy project of Submillimiter Array interferometer (SMA)! http://b0dega.iaa.es! ! IAA-CSIC! CfA (Harvard-Smithsonian Center for Astrophysics)! ASIAA (Institute of Academia Sinica Astronomy and Astrophysics) ! ! 4
  • Velocity Cubes!M. Krips – ESO 3D2008 Workshop – Garching! 5
  • B0DEGA VO Web Interface!Mapping SIA & SSA Input parameters with DataModels Need search in “velocity range” 6
  • B0DEGA VO Web Interface!Characterization!List of properties describing the datasets!!•  Observable axis not needed in a first time!•  Redshift as derived property!•  Dataset Type as a target property! 7
  • Information from FITS Headers!!Char! .SpatialAxis! .VelocityAxis! .Coverage! .Location! " .Bounds!Char! .FluxAxis! .Resolution!! .Coverage! " .Support!!DATAMIN<0 8
  • B0DEGA VO Web Interface! 9
  • B0DEGA VO Web Interface!Data needed by the Astronomer!!•  Decoupled coordinates!•  Distances!•  Morphological Type!•  Bar !•  Ring!•  Multiple!•  Linear diameter!•  Masses!•  Luminosities!•  Inclination!•  Position Angle! 10
  • Fitting to CharDM!Array of velocities needed forgeneration of virtual channelmapsNot regular sampling ? 11
  • Derived datasets from velocity cubes! Channel MapChar.VelocityAxis.Coverage.Support !Array of values 12
  • Derived datasets from velocity cubes! Integrated Flux! MapChar.VelocityAxis.Coverage.Bounds.Extent! 13
  • Derived datasets from velocity cubes! Velocity MapChar.VelocityAxis.Coverage.Bounds.Extent! 14
  • Derived datasets from velocity cubes! Spectral ProfileChar.VelocityAxis.Coverage.Bounds.Extent!Char.SpatialAxis.Coverage.Support.Extent! 15
  • Derived datasets from velocity cubes! Radial ProfileChar.VelocityAxis.Coverage.Bounds.Extent!Position angle, Length and Width of theradius of the galaxy ! 16
  • Other considerations!•  Characterization of content is needed for the generation of on-the-fly virtual data subproducts! Splinter Session! SIA v2 Access Methods!•  Accuracy and errors should be linked to a Provenance DM!•  Polarization Axis! !! ! ! ! 17