Other
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.4118s&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #41.18; Bulletin of the American Astronomical Society, Vol. 32, p.1464
Other
Scientific paper
While many Galactic abundance trends are reasonably well understood and modeled, the nucleosynthetic origin of copper is still something of a mystery. Sneden et al. (1991) found that in field stars the abundance ratio [Cu/M] declines sharply with decreasing metallicity: at [Fe/H] ~ -1, [Ce/Fe] ~ -0.2; at [Fe/H] ~ -3, [Cu/Fe] ~ -1. They also included in their study an analysis of Cu abundances for several globular cluster stars and a reanalysis of previously published results for population I stars. They found this abundance trend throughout the entire sample. In contrast, in the massive multi-metallicity globular cluster Omega Centauri Smith et al. (2000) found no trend at all in [Cu/Fe] with [Fe/H]. Instead, [Cu/Fe] ~ -0.6 over the range -2 < [Fe/H] < -0.9 . In an effort to better understand Cu trends, we will present the Cu abundances of stars in other selected globular clusters. This sample includes high and medium resolution (R ~ 60,000 and 30,000, respectively), high S/N spectra of approximately 16 stars from M5 and 18 stars from M4. Stellar metallicities in the two clusters M4 and M5 are comparable, but our preliminary results indicate that [Cu/Fe] ~ -0.25 in M4 and [Cu/Fe] ~ -0.6 in M5.
Ivans Inese I.
Kraft Ralph Porter
Simmerer Jennifer A.
Sneden Chistopher
No associations
LandOfFree
Copper Abundances in Globular Clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Copper Abundances in Globular Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copper Abundances in Globular Clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1724008