Top: pseudo-photometric distances of 29 open clusters as a function TGAS distances. The black circles represent the clusters of the fvl17 list, except NGC 6633 (18 clusters); the red circles concern 11 additional clusters. The green straight line is the statistical linear fit with the equation ppdm = (0.023 ± 0.047) + (0.999 ± 0.007) × tgdm. Bottom: difference between pseudo-photometric and TGAS distances.
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