Cu and Zn Abundances in Metal Poor Stars

Bibcode
2003IAUJD..15E..62B
Bihain, Gabriel; Rebolo, Rafael; Israelian, Garik
Referencia bibliográfica

Elemental Abundances in Old Stars and Damped Lyman-α Systems, 25th meeting of the IAU, Joint Discussion 15, 22 July 2003, Sydney, Australia

Fecha de publicación:
0
2003
Número de autores
3
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
We present Cu and Zn abundances for a sample of 30 stars spanning a metallicity range between solar and [Fe/H]=-3. LTE abundances were obtained using Kurucz model atmospheres and the near UV lines of Cu I 3273.95 and Zn I 3302.58 A observed at high spectral resolution. The trend of [Zn/Fe] vs [Fe/H] is essentially constant over the whole metallicity range however the [Cu/Fe] trend is approximately constant down to [Fe/H]~-1.4 and then decreases at lower metallicities possibly reaching a plateau around [Cu/Fe]~-1 for [Fe/H]<-2. We compare with previous work on these elements and discuss the results in terms of nucleosynthesis processes.
Tipo
Sin árbitro

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