The Emergence of the Thick Disk in a Cold Dark Matter Universe
dc.contributor.author | Brook, Chris | |
dc.contributor.author | Kawata, Daisuke | |
dc.contributor.author | Gibson, Bradley K | |
dc.contributor.author | Freeman, Kenneth | |
dc.date.accessioned | 2015-12-13T22:50:11Z | |
dc.date.available | 2015-12-13T22:50:11Z | |
dc.date.issued | 2004 | |
dc.date.updated | 2016-02-24T09:49:40Z | |
dc.description.abstract | 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 high redshift. This formation scenario is shown to be consistent with observations of both the Milky Way and extragalactic thick disks. | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/1885/80690 | |
dc.publisher | IOP Publishing | |
dc.source | Astrophysical Journal, The | |
dc.subject | Keywords: Galaxies: evolution; Galaxies: formation; Galaxy: disk | |
dc.title | The Emergence of the Thick Disk in a Cold Dark Matter Universe | |
dc.type | Journal article | |
local.bibliographicCitation.lastpage | 899 | |
local.bibliographicCitation.startpage | 894 | |
local.contributor.affiliation | Brook, Chris, Swinburne University of Technology | |
local.contributor.affiliation | Kawata, Daisuke, Swinburne University of Technology | |
local.contributor.affiliation | Gibson, Bradley K, University of Central Lancashire | |
local.contributor.affiliation | Freeman, Kenneth, College of Physical and Mathematical Sciences, ANU | |
local.contributor.authoremail | u7000399@anu.edu.au | |
local.contributor.authoruid | Freeman, Kenneth, u7000399 | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
local.identifier.absfor | 020110 - Stellar Astronomy and Planetary Systems | |
local.identifier.ariespublication | MigratedxPub8956 | |
local.identifier.citationvolume | 612 | |
local.identifier.doi | 10.1086/422709 | |
local.identifier.scopusID | 2-s2.0-7544240181 | |
local.identifier.uidSubmittedBy | Migrated | |
local.type.status | Published Version |