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Title

H I mapping of galaxies in six Group Evolution Multiwavelength Study groups

Author(s)

Kern, Katie M.;  Kilborn, Virginia A.;  Forbes, Duncan A.;  Koribalski, Barbel S.

Abstract

Here, we present Australia Telescope Compact Array (ATCA) H i maps of 16 H i sources in six Group Evolution Multiwavelength Study groups that were previously observed with the Parkes telescope. The higher spatial resolution of the ATCA allows us to clearly identify the optical counterparts for the first time---most being associated with low surface brightness late-type galaxies. New integrated H i maps and velocity fields for each source are presented. We find several interacting systems; one of which contains three galaxies within a common H i envelope. Extended H i structures in the sample are more consistent with tidal effects than ram pressure stripping. We identify two H i detections with previously uncatalogued optical galaxies, and add a total of six newly identified group members to the NGC 3923, 5044 and 7144 groups.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing

Source

Monthly Notices of the Royal Astronomical Society, Vol. 384, no. 1 (Feb 2008), p. 305-315

Publication year

2008

Keyword(s)

ATCA;  Australia Telescope Compact Array;  Galaxies;  Galaxy evolution;  GEMS;  Globular clusters;  Group Evolution Multiwavelength Study;  NGC 3923;  NGC 5044;  NGC 7144;  Radio lines;  Surveys

Publisher

Blackwell Publishing

ISSN

0035-8711

Publisher URL

http://dx.doi.org/10.1111/j.1365-2966.2007.12693.x

Copyright

Copyright © 2008 Royal Astronomical Society. Author's final draft reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed