GA-NIFS: An extremely nitrogen-loud and chemically stratified galaxy at z\sim 5.55

We report the chemical abundance pattern of GS\_3073, a galaxy at z=5.55 which was previously confirmed to host an overmassive active black hole, by leveraging the detection of about 40 emission lines, combining JWST/NIRSpec observations and ground-based (VLT/VIMOS) data. By using rest-frame UV emission lines, which trace high-density ($\sim 10^5~{\rm... Show more