Using the JWST UNCOVER and PRIMER Treasury surveys, we measure the sizes of 332 7<logM<11 quiescent galaxies at cosmic noon (1<z<3). We find that there exist two distinct populations of quiescent galaxies at this epoch: a young, low-mass, disky population and an older, massive, spheroidal population, further highlighting the different mechanisms involved in galaxy evolution at low masses.
Sam E. Cutler, Katherine E. Whitaker, John R. Weaver, Bingjie Wang, Richard Pan, Rachel Bezanson, Lukas J. Furtak, Ivo Labbé, Joel Leja, Sedona H. Price, Yingjie Cheng, Maike Clausen, Fergus Cullen, Pratika Dayal, Anna de Graaff, Mark Dickinson, James S. Dunlop, Robert Feldmann, Marijn Franx, Mauro Giavalisco, Karl Glazebrook, Jenny E. Greene, Norman A. Grogin, Garth Illingworth, Anton M. Koekemoer, Vasily Kokorev, Danilo Marchesini, Michael V. Maseda, Tim B. Miller, Themiya Nanayakkara, Erica J. Nelson, David J. Setton, Heath Shipley, Katherine A. Suess
