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Tracing the Galactic Thick Disk to Solar Metallicities

Bensby, T.; Zenn, A.R.; Oey, M.S. and Feltzing, Sofia LU (2007) In Astrophysical Journal 663(1). p.13-16
Abstract
We show that the Galactic thick disk reaches at least solar metallicities and that it experienced strong chemical enrichment during a period of ~3 Gyr, ending around 8-9 Gyr ago. This finding puts further constraints on the relation and interface between the thin and thick disks and their formation processes. Our results are based on a detailed elemental abundance analysis of 261 kinematically selected F and G dwarf stars in the solar neighborhood: 194 likely members of the thick disk and 67 likely members of the thin disk, in the range -1.3<~[Fe/H]<~+0.4.



Based on data collected with the 6.5 m Magellan telescopes at the Las Campanas Observatory and with the Very Large Telescope at the European Southern Observatory... (More)
We show that the Galactic thick disk reaches at least solar metallicities and that it experienced strong chemical enrichment during a period of ~3 Gyr, ending around 8-9 Gyr ago. This finding puts further constraints on the relation and interface between the thin and thick disks and their formation processes. Our results are based on a detailed elemental abundance analysis of 261 kinematically selected F and G dwarf stars in the solar neighborhood: 194 likely members of the thick disk and 67 likely members of the thin disk, in the range -1.3<~[Fe/H]<~+0.4.



Based on data collected with the 6.5 m Magellan telescopes at the Las Campanas Observatory and with the Very Large Telescope at the European Southern Observatory (ESO proposal 72.B-0179). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Galaxy: disk—Galaxy: evolution—Galaxy: formation—solar neighborhood—stars: abundances—stars: kinematics
in
Astrophysical Journal
volume
663
issue
1
pages
13 - 16
publisher
University of Chicago Press
external identifiers
  • wos:000247539400004
  • scopus:34547187009
ISSN
0004-637X
DOI
10.1086/519792
language
English
LU publication?
yes
id
86034a0b-e21f-46cd-a7e2-776142c23b23 (old id 760302)
alternative location
http://adsabs.harvard.edu/abs/2007ApJ...663L..13B
date added to LUP
2007-12-17 11:47:34
date last changed
2017-10-22 04:34:15
@article{86034a0b-e21f-46cd-a7e2-776142c23b23,
  abstract     = {We show that the Galactic thick disk reaches at least solar metallicities and that it experienced strong chemical enrichment during a period of ~3 Gyr, ending around 8-9 Gyr ago. This finding puts further constraints on the relation and interface between the thin and thick disks and their formation processes. Our results are based on a detailed elemental abundance analysis of 261 kinematically selected F and G dwarf stars in the solar neighborhood: 194 likely members of the thick disk and 67 likely members of the thin disk, in the range -1.3&lt;~[Fe/H]&lt;~+0.4.<br/><br>
<br/><br>
Based on data collected with the 6.5 m Magellan telescopes at the Las Campanas Observatory and with the Very Large Telescope at the European Southern Observatory (ESO proposal 72.B-0179).},
  author       = {Bensby, T. and Zenn, A.R. and Oey, M.S. and Feltzing, Sofia},
  issn         = {0004-637X},
  keyword      = {Galaxy: disk—Galaxy: evolution—Galaxy: formation—solar neighborhood—stars: abundances—stars: kinematics},
  language     = {eng},
  number       = {1},
  pages        = {13--16},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {Tracing the Galactic Thick Disk to Solar Metallicities},
  url          = {http://dx.doi.org/10.1086/519792},
  volume       = {663},
  year         = {2007},
}