Cluster Members in the APOGEE DR17. I.

We found 1987 stars belonging to 49 open clusters, and 941 of these stars have probabilities above 80% of belonging to open clusters. Our metallicity gradient presents a two-slope shape for two measures of different Galactic center distances, the projected Galactocentric distance, and the guiding center radius to the Galactic Center, as already reported in previous work. However, when we separate the open clusters by age, we observe no significant difference in the metallicity gradient slope beyond a certain distance from the Galactic center.

Our results show a shallower gradient for clusters younger than 2Gyr than those older than 2Gyr. All our OCs dynamically assemble the Disk-like population very well, and they are in prograde orbits, which is typical for disk-like populations. Some OCs resonate with the Galactic bar at the Lagrange points L4 and L5.