Table 4
Summary of the properties of star clusters used as reference for APOGEE and SEGUE distance estimates: dereddened cluster distance moduli, ages, metallicities, reddenings, and numbers of stars observed by APOGEE and SEGUE.
| Cluster | (m−M)0 | log (τ) | [Fe/H] | E(B−V) |
|
|
|
|
||||||
| NGC 188 | 11.55 | 9.63 | −0.02 | 0.082 | 5 | |
| NGC 2158 | 13.52 | 9.02 | −0.23 | 0.36 | 15 | 10 |
| NGC 2420 | 12.45 | 9.05 | −0.26 | 0.029 | 16 | 125 |
| NGC 5466 | 16.02 | 10.13 | − 1.98 | 0.0 | 5 | |
| NGC 6791 | 13.06 | 9.64 | + 0.15 | 0.117 | 22 | 37 |
| NGC 6819 | 11.86 | 9.17 | + 0.07 | 0.238 | 23 | |
| NGC 7789 | 11.84 | 9.23 | −0.08 | 0.217 | 4 | |
| M 2 | 15.50 | 10.11 | − 1.65 | 0.06 | 3 | 64 |
| M 3 | 15.07 | 9.69 | − 1.5 | 0.12 | 18 | 35 |
| M 5 | 14.46 | 10.02 | − 1.29 | 0.03 | 84 | |
| M 13 | 14.33 | 10.06 | − 1.53 | 0.02 | 46 | 149 |
| M 15 | 15.39 | 10.07 | − 2.37 | 0.10 | 31 | 78 |
| M 35 | 10.37 | 7.97 | − 0.16 | 0.262 | 6 | |
| M 53 | 16.32 | 10.10 | − 2.1 | 0.02 | 13 | |
| M 67 | 9.79 | 9.41 | 0.00 | 0.059 | 48 | 50 |
| M 71 | 13.01 | 10.00 | − 0.78 | 0.25 | 2 | |
| M 92 | 14.65 | 10.14 | − 2.31 | 0.02 | 34 | 39 |
| M 107 | 15.05 | 10.14 | − 1.02 | 0.33 | 39 | |
| Be 29 | 15.86 | 9.025 | − 0.44 | 0.157 | 9 | |
Notes. Almost all of the listed clusters were used for APOGEE calibration, while SEGUE targeted a larger number of cluster members in some selected calibration clusters.
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