2005/09/08 by D. J. Pisano, D. G. Barnes, David G. Barnes +5 · 1 citation
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Dwarf galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Galaxy group #Gamma-ray bursts and supernovae #Halo #Halo mass function #Local Group #Physics #Satellite galaxy #Telescope #astro-ph
paper · pdf · doi:10.1007/978-1-4020-5573-7_55
4 pages, To appear in the proceedings of the "Island Universes: Structure and Evolution of Disk Galaxies" conference held in Terschelling, Netherlands, July 2005, ed. R. de Jong (Springer: Dordrecht)
arxiv created 2005/09/08 · openalex publication_date 2007/05/24 · arxiv updated 2015/06/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 M(HI) < 107 M(sun) 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.