HI Observations of Compact Groups of Galaxies

Publications of the Astronomical Society of Australia

Tom Oosterloo¹ 

[1] Angela Iovino

关键词: galaxies: interactions;    galaxies: ISM;    galaxies: evolution;   

DOI  :  10.1071/AS97048

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

We present preliminary results from HI observations of a new sample of compact groups done with the Parkes telescope, as well as from images made with the Australia Telescope Compact Array (ATCA). These observations confirm earlier claims that a significant fraction of compact groups are deficient in HI, and hence that a significant fraction of groups of galaxies that appear compact on the sky are indeed compact systems. The ATCA observations of a very HI-poor group suggest that this group is a true compact system in an advanced stage of evolution. However, the ATCA observations also show that HI-rich groups exist that are genuinely compact.

【 授权许可】

Unknown