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Paper: Hi Image Synthesis of Southern Compact Groups
Volume: 209, Small Galaxy Groups, IAU Colloquium 174
Page: 132
Authors: Babic, B.; Price, R. M.; Jones, K.
Abstract: Four southern compact groups, the Hickson Compact Groups HCG 22 and HCG 26 (Hickson 1982), and the groups AM 1238 - 396 and ESO 410-G(024 - 026) have been imaged in Hi, along with 12 cm continuum using the Australia Telescope Compact Array (ATCA). The initial findings for the latter two groups are presented here. While ESO 410-G is not in fact a physical group, due to the discordant redshifts amongst the members, it is however presented here. Overall for all the groups we find no other sources of Hi in the field that might indicate that these are part of a larger loose group structure. This is not always the case, as with HCG 23 (Williams 1995) and HCG 95 (Hutchmeier 1999), both of whom find additional Hi sources within the primary beam accordant with the compact group's velocity. The Hi is also clearly associated with each of the individual member galaxies in all cases, except for HCG 26, which envelopes the whole group as was also shown by Williams and van Gorkom (Williams 1995).
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