The Emergence of the Thick Disk in a Cold Dark Matter Universe
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Brook, Chris; Kawata, Daisuke; Gibson, Bradley K; Freeman, Kenneth
Description
The disk galaxy simulated using our chemodynamic galaxy formation code, GCD+, is shown to have a thick-disk component. This is evidenced by the velocity dispersion versus age relation for solar neighborhood stars, which clearly shows an abrupt increase in velocity dispersion at a look-back time of approximately 8 Gyr, and is in excellent agreement with observation. These thick-disk stars are formed from gas that is accreted to the galaxy during a chaotic period of hierarchical clustering at...[Show more]
Collections | ANU Research Publications |
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Date published: | 2004 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/80690 |
Source: | Astrophysical Journal, The |
DOI: | 10.1086/422709 |
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