Disentangling the intragroup HI in Compact Groups of galaxies by means of X3D visualization

Lourdes Verdes-Montenegro, Frederic Vogt, Claire Aubery, Laetitie Duret, Julián Garrido, Susana Sánchez, Min S. Yun, Sanchayeeta Borthakur, Kelley Hess, Michelle Cluver, Ascensión Del Olmo, Jaime Perea

Research output: Contribution to journalArticlepeer-review


As an extreme kind of environment, Hickson Compact groups (HCGs) have shown to be very complex systems. HI-VLA observations revealed an intrincated network of HI tails and bridges, tracing pre-processing through extreme tidal interactions. We found HCGs to show a large HI deficiency supporting an evolutionary sequence where gas-rich groups transform via tidal interactions and ISM (interstellar medium) stripping into gas-poor systems. We detected as well a diffuse HI component in the groups, increasing with evolutionary phase, although with uncertain distribution. The complex net of detected HI as observed with the VLA seems hence so puzzling as the missing one. In this talk we revisit the existing VLA information on the HI distribution and kinematics of HCGs by means of X3D visualization. X3D constitutes a powerful tool to extract the most from HI data cubes and a mean of simplifying and easing the access to data visualization and publication via three-dimensional (3-D) diagrams.

Original languageEnglish (US)
Pages (from-to)241-243
Number of pages3
JournalProceedings of the International Astronomical Union
Issue numberS321
StatePublished - Mar 1 2016
Externally publishedYes


  • Galaxies
  • compact groups
  • galaxy evolution
  • visualization

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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