The role of 3-D interactive visualization in blind surveys of H I in galaxies

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19 Citations (Scopus)

Abstract

Upcoming H I surveys will deliver large datasets, and automated processing using the full 3-D information (two positional dimensions and one spectral dimension) to find and characterize H I objects is imperative. In this context, visualization is an essential tool for enabling qualitative and quantitative human control on an automated source finding and analysis pipeline. We discuss how Visual Analytics, the combination of automated data processing and human reasoning, creativity and intuition, supported by interactive visualization, enables flexible and fast interaction with the 3-D data, helping the astronomer to deal with the analysis of complex sources. 3-D visualization, coupled to modeling, provides additional capabilities helping the discovery and analysis of subtle structures in the 3-D domain. The requirements for a fully interactive visualization tool are: coupled 1-D/2-D/3-D visualization, quantitative and comparative capabilities, combined with supervised semi-automated analysis. Moreover, the source code must have the following characteristics for enabling collaborative work: open, modular, well documented, and well maintained. We review four state of-the-art, 3-D visualization packages assessing their capabilities and feasibility for use in the case of 3-D astronomical data.
Original languageEnglish
Article number1505.06976
Pages (from-to)86-99
Number of pages15
JournalAstronomy and Computing
Volume12
DOIs
Publication statusPublished - Sep-2015

Keywords

  • Radio lines: galaxies
  • Galaxies: kinematics and dynamics
  • Surveys
  • Scientific visualization
  • Visual analytics
  • DIMENSIONAL DATA VISUALIZATION
  • HIGH-VELOCITY CLOUDS
  • SPECTRAL-LINE DATA
  • ASTRONOMICAL DATA
  • SOURCE-FINDER
  • SCIENTIFIC VISUALIZATION
  • NEUTRAL HYDROGEN
  • DISK GALAXIES
  • ASKAP
  • ARRAY

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