Image Details
Caption: Figure 1.
Top: spatial distribution of likely NGC 6819 members (P ≥ 0.5) identified from Gaia eDR3 data within 23﹩^{\prime} ﹩ of the cluster center. Color indicates cluster membership probability. Marker size scales with brightness. Grayscale points illustrate all Gaia sources in the field for comparison. Bottom: CMD of likely NGC 6819 members (P ≥ 0.5) compared to all Gaia sources within a 23﹩^{\prime} ﹩ radius. For reference, the bulk reddening correction for the cluster is E(BP − RP) = 0.18 mag.
© 2026. The Author(s). Published by the American Astronomical Society.