The First Quenched Galaxies: When and How?
No hay miniatura disponible
Archivos
Fecha
2024-05-01
Autores
Xie, Lizhi
De Lucia, Gabriella
Fontanot, Fabio
Hirschmann, Michaela
Bahé, Yannick M.
Balogh, Michael L.
Muzzin, Adam
Vulcani, Benedetta
Baxter, Devontae C.
Forrest, Ben
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
American Astronomical Society
Nombre de Curso
Licencia CC
CC BY 4.0 DEED
Attribution 4.0 International
Licencia CC
https://creativecommons.org/licenses/by/4.0/
Resumen
Many quiescent galaxies discovered in the early Universe by JWST raise fundamental questions on when and how these galaxies became and stayed quenched. Making use of the latest version of the semianalytic model GAEA that provides good agreement with the observed quenched fractions up to z ∼ 3, we make predictions for the expected fractions of quiescent galaxies up to z ∼ 7 and analyze the main quenching mechanism. We find that in a simulated box of 685 Mpc on a side, the first quenched massive (M ⋆ ∼ 1011 M ⊙), Milky Way-mass, and low-mass (M ⋆ ∼ 109.5 M ⊙) galaxies appear at z ∼ 4.5, z ∼ 6.2, and before z = 7, respectively. Most quenched galaxies identified at early redshifts remain quenched for more than 1 Gyr. Independently of galaxy stellar mass, the dominant quenching mechanism at high redshift is accretion disk feedback (quasar winds) from a central massive black hole, which is triggered by mergers in massive and Milky Way-mass galaxies and by disk instabilities in low-mass galaxies. Environmental stripping becomes increasingly more important at lower redshift.
Notas
Indexación: Scopus.
Palabras clave
Citación
Astrophysical Journal Letters Open Access Volume 966, Issue 11 May 2024 Article number L2
DOI
10.3847/2041-8213/ad380a