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.
|Number of pages||4|
|Journal||Astrophysics and Space Science Proceedings|
|Publication status||Published - 1 Jan 2007|
|Event||International Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005 - Terschelling, Netherlands|
Duration: 3 Jul 2005 → 5 Jul 2005