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A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars

Simmerer, Jennifer LU ; Sneden, Christopher; Ivans, Inese; Kraft, Robert; Shetrone, Matthew and Smith, Verne (2003) In Astronomical Journal 125(4). p.2018-2028
Abstract
We derive [Cu/Fe] for 117 giant stars in 10 globular clusters (M3, M4, M5, M10, M13, M15, M71, NGC 7006, NCG 288, and NGC 362) and find that globular cluster Cu abundances appear to follow [Cu/Fe] trends found in the field. This result is interesting in light of recent work, which indicates that the globular cluster ω Centauri shows no trend in [Cu/Fe] with [Fe/H] over the abundance range -2.0<[Fe/H]<-0.8. Of particular interest are the two clusters M4 and M5. While at a similar metallicity ([Fe/H]~-1.2), they differ greatly in some elemental abundances: M4 is largely overabundant in Si, Ba, and La compared with M5. We find that it is also overabundant in Cu with respect to M5, although this overabundance is in accord with [Cu/Fe]... (More)
We derive [Cu/Fe] for 117 giant stars in 10 globular clusters (M3, M4, M5, M10, M13, M15, M71, NGC 7006, NCG 288, and NGC 362) and find that globular cluster Cu abundances appear to follow [Cu/Fe] trends found in the field. This result is interesting in light of recent work, which indicates that the globular cluster ω Centauri shows no trend in [Cu/Fe] with [Fe/H] over the abundance range -2.0<[Fe/H]<-0.8. Of particular interest are the two clusters M4 and M5. While at a similar metallicity ([Fe/H]~-1.2), they differ greatly in some elemental abundances: M4 is largely overabundant in Si, Ba, and La compared with M5. We find that it is also overabundant in Cu with respect to M5, although this overabundance is in accord with [Cu/Fe] ratios found in the field. (Less)
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organization
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Contribution to journal
publication status
published
subject
in
Astronomical Journal
volume
125
issue
4
pages
2018 - 2028
publisher
The American Astronomical Society
external identifiers
  • Scopus:0042260822
ISSN
1538-3881
language
English
LU publication?
no
id
e5547668-15ea-41b8-83fe-44bf584fc7e1 (old id 965031)
date added to LUP
2008-01-29 11:14:06
date last changed
2017-01-01 08:09:17
@article{e5547668-15ea-41b8-83fe-44bf584fc7e1,
  abstract     = {We derive [Cu/Fe] for 117 giant stars in 10 globular clusters (M3, M4, M5, M10, M13, M15, M71, NGC 7006, NCG 288, and NGC 362) and find that globular cluster Cu abundances appear to follow [Cu/Fe] trends found in the field. This result is interesting in light of recent work, which indicates that the globular cluster ω Centauri shows no trend in [Cu/Fe] with [Fe/H] over the abundance range -2.0&lt;[Fe/H]&lt;-0.8. Of particular interest are the two clusters M4 and M5. While at a similar metallicity ([Fe/H]~-1.2), they differ greatly in some elemental abundances: M4 is largely overabundant in Si, Ba, and La compared with M5. We find that it is also overabundant in Cu with respect to M5, although this overabundance is in accord with [Cu/Fe] ratios found in the field.},
  author       = {Simmerer, Jennifer and Sneden, Christopher and Ivans, Inese and Kraft, Robert and Shetrone, Matthew and Smith, Verne},
  issn         = {1538-3881},
  language     = {eng},
  number       = {4},
  pages        = {2018--2028},
  publisher    = {The American Astronomical Society},
  series       = {Astronomical Journal},
  title        = {A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars},
  volume       = {125},
  year         = {2003},
}