Ask a Question

Prefer a chat interface with context about you and your work?

A Protocluster of Massive Quiescent Galaxies at z = 4

A Protocluster of Massive Quiescent Galaxies at z = 4

Abstract We report on discovery of a concentration of massive quiescent galaxies located at z = 4. The concentration is first identified using high-quality photometric redshifts based on deep, multiband data in Subaru/XMM-Newton Deep Field. Follow-up near-infrared spectroscopic observations with MOSFIRE on Keck confirm a massive (∼10 11 M ⊙ …