Accès ouvert
2026
preprint
OpenAlex
Mengyuan Xiao, Pascal A. Oesch, Longji Bing, Rashmi Gottumukkala et autres
Massive galaxies provide strong tests of galaxy formation models, yet a comprehensive spectroscopic view of their properties and demographics in the early Universe has remained elusive. Here we present a JWST spectroscopic census of the 200 most massive galaxies at zspec~3-15, selected …
Accès ouvert
2026
preprint
OpenAlex
Rohan P. Naidu, Jorryt Matthee, Anna de Graaff, Alberto Torralba et autres
JWST's Little Red Dots (LRDs) display a unique constellation of features that do not occur simultaneously in any other class of galaxies or AGN. Here we observe that many of these features find parallels in the 19th century Great Eruption (GE) of …
Accès ouvert
2026
preprint
OpenAlex
Kasper E. Heintz, C L Pollock, Joris Witstok, R Bouwens et autres
Recent observations with JWST have revealed a remarkable population of surprisingly luminous galaxies at redshifts $z>10$. Their abundance exceed predictions from simulations and empirical extrapolations from lower redshifts, suggesting a transition in the physical conditions under which the first stars formed. Here …