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The solar neighborhood age-metallicity relation - Does it exist?

Feltzing, Sofia LU orcid ; Holmberg, Johan LU and Hurley, J (2002) Workshop on Modes of Star Formation and the Origin of Field Populations 285. p.243-247
Abstract
We test the hypothesis that the spread in the age-metallicity plot of the solar neighborhood is due to a mixture of stars belonging to kinematically different sub-populations of the Galactic disk, i.e., the thin and the thick disk. We use a kinematic subsample of similar to 600 stars from a sample of similar to 6000 dwarf and subgiant stars from the Hipparcos catalog. All of these stars have a full set of stellar parameters determined, including good ages. We find that a significant spread in [Me/H] is present in both kinematic populations, especially at large stellar ages. This implies that a simple one-to-one relation between ages and metallicities is not possible. In fact, there are stars that are-truly old and at the same time have... (More)
We test the hypothesis that the spread in the age-metallicity plot of the solar neighborhood is due to a mixture of stars belonging to kinematically different sub-populations of the Galactic disk, i.e., the thin and the thick disk. We use a kinematic subsample of similar to 600 stars from a sample of similar to 6000 dwarf and subgiant stars from the Hipparcos catalog. All of these stars have a full set of stellar parameters determined, including good ages. We find that a significant spread in [Me/H] is present in both kinematic populations, especially at large stellar ages. This implies that a simple one-to-one relation between ages and metallicities is not possible. In fact, there are stars that are-truly old and at the same time have [Me/H] > 0.2 dex. (Less)
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author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Modes of Star Formation and the Origin of Field Populations, Proceedings
volume
285
pages
243 - 247
publisher
Astronomical Society of the Pacific (ASP)
conference name
Workshop on Modes of Star Formation and the Origin of Field Populations
conference location
Heidelberg, Germany
conference dates
2000-10-09 - 2000-10-13
external identifiers
  • wos:000180752500035
ISBN
1-58381-128-1
language
English
LU publication?
yes
id
d79e0e57-1253-46e5-8565-bd8e878ea68a (old id 1406935)
date added to LUP
2016-04-04 10:43:21
date last changed
2020-06-16 15:05:00
@inproceedings{d79e0e57-1253-46e5-8565-bd8e878ea68a,
  abstract     = {{We test the hypothesis that the spread in the age-metallicity plot of the solar neighborhood is due to a mixture of stars belonging to kinematically different sub-populations of the Galactic disk, i.e., the thin and the thick disk. We use a kinematic subsample of similar to 600 stars from a sample of similar to 6000 dwarf and subgiant stars from the Hipparcos catalog. All of these stars have a full set of stellar parameters determined, including good ages. We find that a significant spread in [Me/H] is present in both kinematic populations, especially at large stellar ages. This implies that a simple one-to-one relation between ages and metallicities is not possible. In fact, there are stars that are-truly old and at the same time have [Me/H] > 0.2 dex.}},
  author       = {{Feltzing, Sofia and Holmberg, Johan and Hurley, J}},
  booktitle    = {{Modes of Star Formation and the Origin of Field Populations, Proceedings}},
  isbn         = {{1-58381-128-1}},
  language     = {{eng}},
  pages        = {{243--247}},
  publisher    = {{Astronomical Society of the Pacific (ASP)}},
  title        = {{The solar neighborhood age-metallicity relation - Does it exist?}},
  volume       = {{285}},
  year         = {{2002}},
}