Studying galaxy formation in loose galaxy groups

D. J. Pisano, D. G. Barnes, B. K. Gibson, L. Staveley-Smith, K. C. Freeman, V. A. Kilborn

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)


We present the results of our Hi survey of six loose groups of galaxies analogous to the Local Group. The survey was conducted using the Parkes telescope and the Australia Telescope Compact Array to produce a census of all the gas-rich galaxies and analogs to the high-velocity clouds (HVCs) within these groups down to MHI< 107 M as a test of models of galaxy formation. We present the Hi mass function and halo mass function of the loose groups and show that they are consistent with those of the Local Group. We discuss the possible role of HVCs in solving the “missing satellite” problem and discuss the implications of our observations for models of galaxy formation.

Original languageEnglish
Title of host publicationAstrophysics and Space Science Proceedings
Number of pages4
Publication statusPublished - 1 Jan 2007
Externally publishedYes
EventInternational Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005 - Terschelling, Netherlands
Duration: 3 Jul 20055 Jul 2005


ConferenceInternational Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005


  • Galaxies: Dwarf
  • Galaxies: Formation
  • Intergalactic medium
  • Radio lines: Galaxies

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