Table 1.
Basic information for our program stars, including the eight field stars, and their spectra.
| Stellar cluster | Star | Gaia DR3 ID | RA | Dec | G | S/N | S/N |
|---|---|---|---|---|---|---|---|
| (deg) | (deg) | (mag) | H band | K band | |||
| NGC 6939 | NGC 6939_1 | 2194725337620737792 | 307.690027985254 | 60.60090033682878 | 10.34 | 249 | 216 |
| Age = 1.70 Gyr | NGC 6939_2 | 2194824018782231296 | 307.751916928197 | 60.81436876801729 | 11.12 | 224 | 199 |
| Rgc = 8.70 kpc | NGC 6939_3 | 2194726471490897024 | 307.518549581646 | 60.55418772365226 | 11.19 | 148 | 132 |
| NGC 6939_4 | 2194713139912733056 | 307.918942123322 | 60.61892205660228 | 11.32 | 166 | 145 | |
| NGC 2420 | NGC 2420_1 | 865399939794984320 | 114.56276636 | 21.5830497562 | 11.14 | 198 | 172 |
| Age = 1.74 Gyr | |||||||
| Rgc = 10.68 kpc | |||||||
| Collinder 110 | Cr 110_2 | 3126738188653591168 | 99.805185271 | 2.0493381003 | 11.05 | 230 | 194 |
| Age = 1.82 Gyr | Cr 110_3 | 3126749767885447552 | 99.738812533 | 2.05903237577 | 10.98 | 254 | 230 |
| Rgc = 10.29 kpc | Cr 110_4 | 3126754234651093888 | 99.686343516 | 2.14405637405 | 10.19 | 390 | 326 |
| NGC 7762 | NGC 7762_1 | 2210930249228141056 | 357.800686711477 | 67.94158562607588 | 10.41 | 262 | 230 |
| Age = 2.04 Gyr | |||||||
| Rgc = 8.78 kpc | |||||||
| NGC 7142 | NGC 7142_1 | 2217941937956979840 | 326.260545852642 | 65.76114212449832 | 11.26 | 186 | 162 |
| Age = 3.09 Gyr | NGC 7142_2 | 2217944274419272960 | 326.705463196390 | 65.76928923282846 | 11.71 | 171 | 151 |
| Rgc = 9.25 kpc | NGC 7142_3 | 2217943587224390912 | 326.291673041744 | 65.85459299930302 | 12.01 | 132 | 112 |
| Berkeley 32 | Be 32_1 | 3129900070557039488 | 104.51412308 | 6.44718036949 | 11.66 | 254 | 230 |
| Age = 4.90 Gyr | Be 32_2 | 3129898833606459904 | 104.51319996 | 6.40616048404 | 11.80 | 148 | 115 |
| Rgc = 11.14 kpc | |||||||
| HIP 3786 | 2556759229189045632 | 12.170968944689 | 7.5848586637986 | 3.84 | 438 | 395 | |
| HIP 4147 | 2535891460567764224 | 13.252085422292 | −1.1443296982576 | 4.12 | 493 | 383 | |
| KIC 5182451 | 2101176414429414528 | 290.400321483165 | 40.3197644483823 | 10.54 | 87 | 78 | |
| KIC 8414116 | 2106673762107078656 | 284.096587350876 | 44.4797275017186 | 10.09 | 219 | 190 | |
| KIC 8427166 | 2126971850569328128 | 290.462597612610 | 44.4461778834982 | 10.69 | 185 | 169 | |
| KIC 12252278 | 2133370527203207040 | 287.902989291060 | 50.9613014077372 | 10.69 | 142 | 123 | |
| KIC 11076239 | 2131204145699718528 | 287.619303757366 | 48.6328776694531 | 10.25 | 136 | 120 | |
| KIC 10801138 | 2128855726303447296 | 293.429473531675 | 48.1947937842640 | 10.00 | 202 | 176 | |
Notes. The ages and Rgc for the OCs are from Cantat-Gaudin et al. (2020). The header of each file containing the spectrum information was employed to obtain the signal-to-noise ratios (S/N). This was achieved by utilizing the value for order 48 as a reference for the H band and order 33 for the K band.
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