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Tracing the Galacti...
Tracing the Galactic Thick Disk to Solar Metallicities
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- Bensby, T. (författare)
- European Southern Observatory Santiago,University of Michigan
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- Zenn, A. R. (författare)
- University of Michigan
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- Oey, M. S. (författare)
- University of Michigan
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- Feltzing, S. (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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(creator_code:org_t)
- 2007-06-06
- 2007
- Engelska.
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Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 663:1, s. 13-16
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http://dx.doi.org/10...
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Abstract
Ämnesord
Stäng
- 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).
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Galaxy: disk
- Galaxy: evolution
- Galaxy: formation
- Solar neighborhood
- Stars: abundances
- Stars: kinematics
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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