NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92
Journal Article
·
· Astrophysical Journal Letters
Although there have been recent claims that there is a large dispersion in the abundances of the heavy neutron capture elements in the old Galactic globular cluster M92, we show that the measured dispersion for the absolute abundances of four of the rare earth elements within a sample of 12 luminous red giants in M92 ({<=}0.07 dex) does not exceed the relevant sources of uncertainty. As expected from previous studies, the heavy elements show the signature of the r-process. Their abundance ratios are essentially identical to those of M30, another nearby globular cluster of similar metallicity.
- OSTI ID:
- 21565379
- Journal Information:
- Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 2 Vol. 740; ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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