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Table 1

Pairs of young (Y) and old (O) stars are grouped together.

Star 2MASS name K s T eff log g [M/H] Mass [C/N] σ[C/N] σRV χ 2 N vis Prob tspan
mag K cgs dex M ⊙ dex dex km s-1 km s-1 days
Y1 J19083615+4641212 9.84 4739 2.71 –0.40 1.67 0.10 0.08 –5.80 0.08 1.18 9 0.00 1718
O1 J19031115+4753540 9.78 4606 2.53 –0.45 0.95 –0.13 0.11 5.29 2.43 608.09 6 1.00 1756
Y2 J19101154+3914584 9.31 4741 2.50 –0.36 1.56 –0.23 0.28 6.25 0.21 4.80 6 0.56 1757
O2 J19055465+3735053 9.26 4756 3.40 –0.43 1.02 –0.33 0.19 –16.38 0.04 0.20 8 0.00 1759
Y3 J19081716+3924583 9.31 4744 3.06 –0.23 1.57 0.03 0.11 –83.54 0.21 5.66 7 0.54 1753
O3 J19313671+4532500 9.68 4724 3.28 –0.18 0.92 0.21 0.03 –26.97 3.36 1165.68 6 1.00 1577
Y4 J19093999+4913392 9.24 4785 2.50 –0.52 1.38 –0.40 0.28 –73.23 3.38 473.10 3 1.00 1692
O4 J19370398+3954132 11.44 4774 2.381 –0.50 1.04 –0.09 0.10 –151.26 0.12 0.89 4 0.17 1408
Y5 J19032243+4547495 9.89 4729 2.30 –0.19 2.02 –0.83 0.43 –86.29 0.11 1.60 8 0.02 1539
O5 J19023483+4444086 8.48 4695 2.43 –0.18 1.00 0.03 0.09 5.98 0.08 0.84 7 0.01 1538
Y6 J19455292+5002304 8.83 4812 2.53 –0.51 1.54 –0.64 0.41 –22.64 4.88 2955.25 7 1.00 1529
O6 J19151828+4736422 10.01 4819 2.38 –0.50 0.90 –0.28 0.23 –30.93 0.08 0.62 6 0.01 1724
Y7 J18553092+4042447 10.74 4849 2.51 –0.43 1.63 –0.43 0.29 –38.40 1.71 300.70 6 1.00 1724
O7 J19411280+5009279 9.72 4792 2.39 –0.43 0.92 –0.34 0.22 1.97 0.04 0.21 6 0.00 1529
Y8 J19102133+4743193 8.55 4676 2.4 –0.30 1.39 –0.25 0.24 –43.17 1.80 334.06 6 1.00 1721
O8 J19084355+4317586 9.73 4669 2.39 –0.30 1.03 –0.16 0.08 –46.69 0.24 7.32 7 0.71 1572
Y9 J18540578+4520474 8.68 4229 1.55 –0.29 1.81 –0.60 0.36 –35.46 3.84 2443.43 9 1.00 1538
O9 J19254985+3701028 8.70 4312 1.64 –0.23 0.93 –0.29 0.21 –69.99 0.37 5.29 8 0.37 1789
Y10 J19093801+4635253 8.89 4435 1.85 –0.20 1.49 –0.53 0.30 –57.03 0.10 0.81 5 0.06 1721
O10 J19382435+3847454 8.87 4411 1.78 –0.07 1.01 –0.51 0.25 6.63 0.34 11.80 6 0.96 1784
Y11 J19052620+4921373 9.88 4669 2.46 –0.17 1.43 –0.37 0.28 –26.80 0.08 0.50 5 0.03 1754
O11 J19551232+4817344 8.21 4644 2.42 –0.07 1.02 –0.27 0.14 –6.10 0.09 0.83 6 0.03 1531
Y12 J19374569+3835356 8.41 4572 2.57 –0.08 1.49 –0.15 0.20 –47.64 0.51 37.87 8 1.00 1778
O12 J19070280+4530112 9.56 4446 1.87 –0.05 0.94 –0.43 0.23 28.99 0.14 3.10 9 0.07 1784
Y13 J19024305+3854594 6.70 4601 2.47 –0.02 1.42 –0.04 0.11 –62.27 0.14 2.45 7 0.13 1754
O13 J19513344+4617498 8.86 4602 2.38 –0.02 0.96 0.07 0.03 –41.43 0.09 0.96 7 0.01 1532

Notes. Their 2MASS name and Ks photometry, as well as their stellar parameters, masses and [C/N] abundances are listed. Columns RV and σRV list the mean RV and the corresponding standard deviation. The χ2 of the RV measurements (adopting an uncertainty of 0.22 km s-1 for all measurements) and the probability Prob of the star being in a binary system (in fact, Prob is the probability integral of the χ2 distribution from 0 to the observed χ2 value for Nvis: 1 degree of freedom) are tabulated as well. Nvis denotes the total number of visits (including APOGEE and HERMES) for each star and tspan is the number of days between the first and the last observation.

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