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Abundances for metal-poor stars with accurate parallaxes: I. Basic data

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Gratton, R. G., Carretta, E., Claudi, R., Lucatello, S., Barbieri, M.·2003·Astronomy & Astrophysics

Abstract

We present element-to-element abundance ratios measured from high dispersion spectra for 150 field subdwarfs and early subgiants with accurate Hipparcos parallaxes (errors <20%). For 50 stars new spectra were obtained with the UVES on Kueyen (VLT UT2), the McDonald 2.7 m telescope, and SARG at TNG. Additionally, literature equivalent widths were taken from the works by Nissen & Schuster, Fulbright, and Prochaska et al. to complement our data. The whole sample includes both thick disk and halo stars (and a few thin disk stars); most stars have metallicities in the range . We found our data, that of Nissen & Schuster, and that of Prochaska to be of comparable quality; results from Fulbright scatter a bit more, but they are still of very good quality and are extremely useful due to the large size of his sample. The results of the present analysis will be used in forthcoming papers to discuss the chemical properties of the dissipational collapse and accretion components of our Galaxy.

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Metadata

Authors
Gratton, R. G., Carretta, E., Claudi, R., Lucatello, S., & Barbieri, M.
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2003-05-26
Volume
404
Issue
1
Pages
187-210
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
OpenAlex
W2151302933
Cited by
341
References
1
FWCI
17.20
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Abundances for metal-poor stars with accurate parallaxes: I. Basic data. https://app.cochat.ai/papers/10.1051/0004-6361:20030439
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Gratton, R. G., Carretta, E., Claudi, R., Lucatello, S., & Barbieri, M. (2003). Abundances for metal-poor stars with accurate parallaxes: I. Basic data. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361%3A20030439

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