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Table 4

Stars with detected Th abundances classified into different subclasses of metal-poor stars.

Name Teff log g [Fe/H] log ϵ(Th) [Th/Fe] log (Th/Eu) “Age”
[K] [cm s-2] [Gyr]

r-I stars
HD 20 5445 2.39  −1.58  −1.06 0.43  −0.79 23.8
HE 0105−6141 5218 2.83  −2.55  −0.87 1.59 0.49  −38
HE 0240−0807 4729 1.54  −2.68  −1.90 0.69  −0.47 6.5
HE 0442−1234 4604 1.34  −2.41  −1.91 0.41  −0.53 9.3
HE 0524−2055 4739 1.57  −2.58  −1.91 0.58  −0.32  −0.5
HE 2252−4157 5090 2.87  −1.93  −1.32 0.52  −0.43 4.7
r-II stars
CS 22892−052 4884 1.81  −2.95  −1.76 1.10  −0.86 24.7
CS 29497−004 5013 2.23  −2.81  −1.17 1.55  −0.49 7.5
CS 31082−001 4922 1.90  −2.78  −1.00 1.69  −0.39 2.8
HE 2224+0143 5198 2.66  −2.58  −1.47 1.02  −0.45 5.6
HE 2327−5642 5048 2.22  −2.95  −1.45 1.41  −0.25  −3.7
r-normal stars
HE 0051−2304 4537 1.22  −2.41  −1.94 0.38  −0.19  −6.5
unclassified stars
HE 0005−0002 4726 1.58  −3.09  −2.03 0.97
HE 0353−6024 5320 3.15  −3.17  −1.06 2.02
HE 1332−0309 5125 2.40  −2.46  −0.97 1.40 0.5  −38.7
HE 2219−0713 4789 1.68  −2.91  −1.97 0.85
HE 2311+0129 5188 2.65  −2.78  −1.32 1.37

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