Elemental abundances of 3 red giants in Ter 7 Virtual Observatory Resource

Authors
  1. Tautvaisiene G.
  2. Wallerstein G.
  3. Geisler D.
  4. Gonzalez G.
  5. Charbonnel C.
  6. Published by
    CDS
Abstract

Chemical abundances in three giants in Terzan 7, a globular cluster associated with the Sagittarius dwarf galaxy, have been determined using high-resolution spectra obtained with the UVES spectrograph on the ESO 8.2m Kueyen telescope. We find the overall metallicity of the stars to be [Fe/H]=-0.61+/-0.07, which is slightly higher than that previously evaluated from photometry and used for the age determination of this cluster. This metallicity yields an age of about 6Gyr, which is slightly lower than derived from previous estimates. The relative abundance ratios of various chemical elements to iron lie between those of its host galaxy's metal-poor and metal-rich stars and reveal an intriguing similarity to the pattern seen in the Large Magellanic Cloud.

Keywords
  1. globular-star-clusters
  2. giant-stars
  3. chemically-peculiar-stars
Bibliographic source Bibcode
2004AJ....127..373T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/373
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/127/373
Document Object Identifer DOI
doi:10.26093/cds/vizier.51270373

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History

2004-12-03T21:34:03Z
Resource record created
2004-12-03T21:34:03Z
Created
2023-04-06T16:51:05Z
Updated

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