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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/48333
- Gas rich mergers in disk formation
- Brook, C. B.; Veilleux, V.; Kawata, D.; Martel, H.; Gibson, B. K.
- In order to explain disk galaxy formation within the hierarchical structure formation, it seems that gas rich mergers must play an important role. We review here our previous studies which have shown the importance of mergers at high redshift being gas rich, in the formation of both the stellar halo and thick disk components of disk galaxies. Regulation of star formation in the building blocks of our galaxy is required to form a low mass low metallicity stellar halo. This regulation results in high redshift, gas rich mergers during which the thick disk forms. In these proceedings, we categorise stars from our simulated disk galaxy into thin and thick disk components by using the Toomre diagram. Rotation velocity, metallicity and age histograms of the two populations are presented, along with alpha element abundances (oxygen, silicone, magnesium), age-height above the plane, age-radius, metallicity-height, and metalicity-radius gradients.
- Publication type
- Conference paper
- Research centre
- Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Astrophysics and Supercomputing
- Astrophysics and space science proceedings: Island universes: structure and evolution of disk galaxies: Proceedings of 'The Island Universe: the Structure and Evolution of Disk Galaxies' conference, Terschelling, Netherlands, 03-08 July 2005 / Roelof Sybe de Jong (ed.), Part VIII, pp. 551-556
- Publication year
- Abundances; Disk galaxies; Galaxy formation; Galaxy interactions; Gas rich mergers; N-body simulations
- 1570-6591 (series ISSN)
- 9781402055720, 1402055722
- Publisher URL
- Copyright © 2007 Springer.
- Peer reviewed