Table 1.
Details of the s-process-enhanced abundance-ratio pair HD 91345 and HD 126681.
| Property | HD 91345 | HD 126681 |
|---|---|---|
| S/N HARPS | 160 | 244 |
| T eff | 5658 ± 39 K | 5570 ± 34 K |
| logg HIP | 4.38 ± 0.08 | 4.64 ± 0.08† |
| [Fe/H] | −1.04 ± 0.03 | −1.15 ± 0.03 |
| [Mg/Fe] | 0.35 ± 0.05 | 0.35 ± 0.04 |
| [Al/Fe] | 0.16 ± 0.01 | 0.17 ± 0.01 |
| [Si/Fe] | 0.37 ± 0.04 | 0.39 ± 0.05 |
| [Ca/Fe] | 0.32 ± 0.09 | 0.36 ± 0.06 |
| [TiI/Fe] | 0.28 ± 0.08 | 0.31 ± 0.06 |
| [Cu/Fe] | 0.29 ± 0.05 | 0.33 ± 0.03 |
| [Zn/Fe] | 0.15 ± 0.07 | 0.14 ± 0.07 |
| [Sr/Fe] | 0.25 ± 0.07 | 0.24 ± 0.05 |
| [Y/Fe] | 0.31 ± 0.05 | 0.25 ± 0.07 |
| [ZrII/Fe] | 0.55 ± 0.06 | 0.53 ± 0.05 |
| [Ba/Fe] | 0.31 ± 0.06 | 0.23 ± 0.04 |
| [Ce/Fe] | 0.32 ± 0.08 | 0.27 ± 0.03 |
| [Nd/Fe] | 0.27 ± 0.06 | 0.28 ± 0.09 |
| [Eu/Fe] | 0.44 ± 0.32 | |
| Mass |
|
|
| Age |
 Gyr |
 Gyr |
| Distance | 59 ± 1 pc | 54.3 ± 0.6 pc |
| v X | 11.5 ± 0.7 km s−1 | 10.3 ± 0.1 km s−1 |
| v Y | 185.2 ± 0.3 km s−1 | 182.5 ± 0.7 km s−1 |
| v Z | −7.5 ± 0.1 km s−1 | −70.2 ± 0.5 km s−1 |
Notes. ( † )The high logg value results from a slightly overestimated HIPPARCOS parallax (21 ± 1 mas) compared to Gaia DR1 (16.8 ± 0.9 mas) and DR2 (17.78 ± 0.07 mas; Gaia Collaboration 2018). The StarHorse age for this star is driven by the higher precision of the Gaia measurements, and the posterior logg is more in line with stellar-evolution expectations for an old main-sequence star.
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