Table 6
Age determinations for CS 29497-004, using initial production ratios from: (1) log (PR)HEW: HEW predictions (this paper) for based on Farouqi et al. (2010); (2) log (PRWP1) and (3) log (PRWP2): waiting-point assumption model predictions (from Kratz et al. 2007, their Table 2, Cols. 6 and 3 resp.).
X/Y | log ϵ(X/Y)obs | ErrAgeobs | log (PR)HEW | AgeHEW | log (PRWP1) | AgeWP1 | log (PRWP2) | AgeWP2 | ||
(1) | (2) | (3) | ||||||||
[Gyr] | [Gyr] | [Gyr] | [Gyr] | |||||||
|
||||||||||
Th/Ba | −1.51 ± 0.12 | 5.7 |
![]() |
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||||||
Th/La | −0.78 ± 0.08 | 3.9 |
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![]() |
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Th/Ce | −0.97 ± 0.06 | 3.0 |
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![]() |
||||||
Th/Pr | −0.49 ± 0.06 | 3.0 |
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![]() |
||||||
Th/Nd | −1.14 ± 0.07 | 3.0 |
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||||||
Th/Sm | −0.86 ± 0.06 | 3.0 |
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![]() |
||||||
Th/Eu | −0.50 ± 0.06 | 3.0 |
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−0.375 | 5.8 | −0.276 | 10.5 | ||
Th/Gd | −0.85 ± 0.07 | 3.2 |
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![]() |
||||||
Th/Dy | −1.08 ± 0.07 | 3.1 |
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![]() |
||||||
Th/Ho | −0.40 ± 0.17 | 8.1 |
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![]() |
||||||
Th/Er | −0.87 ± 0.11 | 4.9 |
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![]() |
||||||
Th/Tm | 0.02 ± 0.08 | 3.9 |
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![]() |
||||||
Th/Hf | −0.52 ± 0.07 | 3.0 |
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−0.335 | 8.6 | −0.063 | 21.3 | ||
|
||||||||||
Th/REE | 3.5 | 11.99( ± 5.46) | ||||||||
|
||||||||||
Th/Os | −1.57 ± 0.12 | 5.7 |
![]() |
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−1.125 | 20.8 | −1.009 | 26.2 | ||
Th/Ir | −1.39 ± 0.09 | 4.1 |
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−1.153 | 11.1 | −1.022 | 17.2 | ||
Th/Pt | −1.16 ± 0.22 | 10.1 |
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−1.444 | −13.3 | −1.585 | −19.9 | ||
|
||||||||||
Th/(Os,Ir) | 4.7 | 27.35( ± 2.26) | 14.4( ± 4.6) | 20.2( ± 4.3) | ||||||
Th/(Os,Ir,Pt) | 5.4 | 24.92( ± 7.74) | ||||||||
|
||||||||||
Th/U | −1.04 ± 0.30 | 6.6 |
![]() |
![]() |
+ 0.195 | 18.4 | + 0.192 | 18.5 | ||
|
||||||||||
U/Ba | −2.55 ± 0.32 | 4.8 |
![]() |
![]() |
||||||
U/La | −1.82 ± 0.31 | 4.6 |
![]() |
![]() |
||||||
U/Ce | −2.01 ± 0.30 | 4.5 |
![]() |
![]() |
||||||
U/Pr | −1.53 ± 0.30 | 4.5 |
![]() |
![]() |
||||||
U/Nd | −2.18 ± 0.30 | 4.5 |
![]() |
![]() |
||||||
U/Sm | −1.90 ± 0.30 | 4.5 |
![]() |
![]() |
||||||
U/Eu | −1.54 ± 0.30 | 4.5 |
![]() |
![]() |
−0.570 | 14.4 | −0.468 | 15.9 | ||
U/Gd | −1.89 ± 0.30 | 4.5 |
![]() |
![]() |
||||||
U/Dy | −2.12 ± 0.30 | 4.5 |
![]() |
![]() |
||||||
U/Ho | −1.44 ± 0.34 | 5.1 |
![]() |
![]() |
||||||
U/Er | −1.91 ± 0.31 | 4.6 |
![]() |
![]() |
||||||
U/Tm | −1.02 ± 0.31 | 4.6 |
![]() |
![]() |
||||||
U/Hf | −1.56 ± 0.30 | 4.5 |
![]() |
![]() |
−0.530 | 15.3 | −0.356 | 19.4 | ||
|
||||||||||
U/REE | 4.6 | 15.29( ± 1.74) | ||||||||
|
||||||||||
U/Os | −2.61 ± 0.32 | 4.7 |
![]() |
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−1.320 | 19.1 | −1.201 | 20.9 | ||
U/Ir | −2.43 ± 0.31 | 4.6 |
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![]() |
−1.348 | 16.1 | −1.215 | 18.0 | ||
U/Pt | −2.20 ± 0.37 | 5.4 |
![]() |
![]() |
−1.639 | 8.3 | −1.777 | 6.3 | ||
|
||||||||||
U/(Os,Ir) | 4.6 | 20.14( ± 0.75) | 15.1( ± 4.3) | 19.4( ± 1.4) | ||||||
U/(Os,Ir,Pt | 4.9 | 17.94( ± 3.69) | 17.5( ± 1.5) | 15.9( ± 6.0) |
Notes. Errors on ages are evaluated in two different ways: the Ye variations on PRs are propagated into AgeHEW as super- and sub-scripts, while ErrAgeobs reports the observational error propagated from the observational uncertainties on the abundance ratio. For mean ages, the dispersion around the mean is also given in the corresponding age column.
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