Each of the 2 newly-discovered protoclusters, MAGAZ3NE J095924+022537 and MAGAZ3NE J100028+023349 (MAGAZ3NE J0959 and MAGAZ3NE J1000 for brief), hosts an ultramassive galaxy — the progenitor of brightest cluster galaxies seen in modern-day large galaxy clusters — in its heart. Notably, and in marked distinction to beforehand found protoclusters, MAGAZ3NE J0959 accommodates a excessive fraction of […]
