Poster Presentation

Resolving massive quiescent galaxies at the core of the SSA22 protocluster at z = 3.09

Author(s): Mariko Kubo (Tohoku University)

Presenter: Mariko Kubo (Tohoku University)

The SSA22 protocluster at z = 3.09 is one of the most significant structures in the Universe.
Based on the multi-wavelength deep and wide imaging observations, galaxies ranging from SMGs to massive quiescent galaxies have been discovered. It suggests that this structure is in the transition epoch of modern giant ellipticals in clusters of galaxies today. A NIRCam/JWST imaging observation for this protocluster was performed in Cy 2. It resolved the morphologies of galaxies and the distribution of low-mass galaxies along the structure. It shows that several giant ellipticals have already been in such a distant protocluster at z>3.