Image Details
Caption: Figure 7.
Comparison of the sample of 80 galaxies exhibiting Hα emission (green dots) with the galaxy density in the Hydra I region. For the density visualization in the background, only galaxies with photo-z or spec-z between 0.001 and 0.0326 within a clustercentric distance of 5R200 were included. The dashed white circle delimits the 1.5R200 radius, and the red star indicates the position of NGC 3311, the Hydra’s brightest cluster galaxy.
© 2026. The Author(s). Published by the American Astronomical Society.