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Table 2

Adopted solar parameters and derived stellar parameters for our programme stars (relative to the Sun).

Object Teff log g ξt [Fe/H]
(K) (cm s−2) (km s−1)
Hebe 5772 4.44 1.00 0.00 Sun

Y1194 5744 ± 11 4.43 ± 0.03 0.98 ± 0.03 −0.005 ± 0.012 ST
Y519 5586 ± 18 3.83 ± 0.05 1.23 ± 0.03 0.084 ± 0.016 SG
Y923 5651 ± 18 3.88 ± 0.06 1.27 ± 0.04 0.076 ± 0.019 SG
Y1844 5628 ± 19 3.84 ± 0.06 1.26 ± 0.04 0.072 ± 0.020 SG
Y535 6155 ± 23 4.18 ± 0.05 1.42 ± 0.06 −0.128 ± 0.017 TO
Y1388 6124 ± 25 4.12 ± 0.05 1.36 ± 0.05 −0.079 ± 0.020 TO
Y2235 6098 ± 21 4.21 ± 0.05 1.34 ± 0.04 0.041 ± 0.018 TO

Notes. The last column gives the type of star: subgiant star (SG), turn-off star (TO), and solar twin on the main sequence (ST).

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