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Home List of Titles The unusual tidal dwarf galaxy in the merger system NGC 3227/6: star formation in a tidal shock?
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/37245
- The unusual tidal dwarf galaxy in the merger system NGC 3227/6: star formation in a tidal shock?
- Mundell, Carole G.; James, Phil A.; Loiseau, Nora; Schinnerer, Eva; Forbes, Duncan A.
- J1023+1952 is a cloud of neutral hydrogen located at the base of a tidal tail, associated with the interacting Seyfert system NGC 3227/6 that was discovered by Mundell et al. and identified as a candidate tidal dwarf galaxy. Here we report the discovery of active star formation concentrated in the southern half of this cloud. We suggest that the localized star formation and lack of detectable old stellar population imply a tidal origin for J1023+1954 and that its star formation is shock-triggered by collapsing gaseous tidal debris. Such shock-triggering may provide a possible formation mechanism for the recently-discovered population of young extragalactic H II regions.
- Publication type
- Conference poster
- Research centre
- Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing
- Presented to Starbursts: From 30 Doradus to Lyman Break Galaxies, Cambridge, United Kingdom, 06-10 September 2004, Vol. 329, 51P, pp. 1-6
- Publication year
- Galaxy formation; J1023+1952; J1023+1954; NGC 3227/6
- 9781402035388, 1402035381
- Publisher URL
- Copyright © 2005 Springer.