HI-Deficient Ultracompact Groups

Details HI-Deficient Ultracompact Groups HI-Deficient Ultracompact Groups

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1777p&link_type=abstract

Chandra Proposal ID #06800427

Computer Science

Chandra Proposal Id #06800427

Scientific paper

It now seems that the morphology-density relation is established by processes operating within groups, and only subsequently incorporated into clusters. The discovery that the HI-deficiency observed in galaxies within compact groups is related to the presence of a hot intergalactic medium, offers a clue to the processes involved in the transformation of the galaxy population. Several of the most HI-deficient groups are extraordinarily compact, and we propose to image these with Chandra to study the relationship between their hot gas content, the HI distribution mapped by the VLA, and the star forming properties of their galaxies. This will enable us to discriminate between ram pressure stripping, tidal stripping and starburst mechanisms for the removal of gas from galaxies.

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