Fig. 13
Position of the OCs studied in this paper in Galactic rectangular XY Z coordinates. Black dots: OCs from this study with relative parallax errors under 50% (considering an additional 0.3 mas calibration error for all OCs). Crosses: OCs from this study with relative parallax error over 50%. Open symbols: OCs from Gaia Collaboration (2017). The spiral arms are traced according to the model of Reid et al. (2014).
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