TY - JOUR
T1 - Early Results from GLASS-JWST. IX. First Spectroscopic Confirmation of Low-mass Quiescent Galaxies at z > 2 with NIRISS
AU - Marchesini, Danilo
AU - Brammer, Gabriel
AU - Morishita, Takahiro
AU - Bergamini, Pietro
AU - Wang, Xin
AU - Bradac, Marusa
AU - Roberts-Borsani, Guido
AU - Strait, Victoria
AU - Treu, Tommaso
AU - Fontana, Adriano
AU - Jones, Tucker
AU - Santini, Paola
AU - Vulcani, Benedetta
AU - Acebron, Ana
AU - Calabrò, Antonello
AU - Castellano, Marco
AU - Glazebrook, Karl
AU - Grillo, Claudio
AU - Mercurio, Amata
AU - Nanayakkara, Themiya
AU - Rosati, Piero
AU - Tubthong, Chanita
AU - Vanzella, Eros
N1 - Publisher Copyright:
© 2023. The Author(s). Published by the American Astronomical Society.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - How passive galaxies form, and the physical mechanisms which prevent star formation over long timescales, are some of the most outstanding questions in understanding galaxy evolution. The properties of quiescent galaxies over cosmic time provide crucial information to identify the quenching mechanisms. Passive galaxies have been confirmed and studied out to z ∼ 4, but all of these studies have been limited to massive systems (mostly with log ( M star / M ⊙ ) > 10.8 ). Using JWST-NIRISS grism slitless spectroscopic data from the GLASS-JWST Early Release Science program, we present spectroscopic confirmation of two quiescent galaxies at z spec = 2.650 − 0.006 + 0.004 and z spec = 2.433 − 0.016 + 0.032 (3σ errors) with stellar masses of log ( M star / M ⊙ ) = 10.59 − 0.05 + 0.11 and log ( M star / M ⊙ ) = 10.07 − 0.03 + 0.06 (corrected for magnification factors of μ = 2.0 and μ = 2.1, respectively). The latter represents the first spectroscopic confirmation of the existence of low-mass quiescent galaxies at cosmic noon, showcasing the power of JWST to identify and characterize this enigmatic population.
AB - How passive galaxies form, and the physical mechanisms which prevent star formation over long timescales, are some of the most outstanding questions in understanding galaxy evolution. The properties of quiescent galaxies over cosmic time provide crucial information to identify the quenching mechanisms. Passive galaxies have been confirmed and studied out to z ∼ 4, but all of these studies have been limited to massive systems (mostly with log ( M star / M ⊙ ) > 10.8 ). Using JWST-NIRISS grism slitless spectroscopic data from the GLASS-JWST Early Release Science program, we present spectroscopic confirmation of two quiescent galaxies at z spec = 2.650 − 0.006 + 0.004 and z spec = 2.433 − 0.016 + 0.032 (3σ errors) with stellar masses of log ( M star / M ⊙ ) = 10.59 − 0.05 + 0.11 and log ( M star / M ⊙ ) = 10.07 − 0.03 + 0.06 (corrected for magnification factors of μ = 2.0 and μ = 2.1, respectively). The latter represents the first spectroscopic confirmation of the existence of low-mass quiescent galaxies at cosmic noon, showcasing the power of JWST to identify and characterize this enigmatic population.
UR - http://www.scopus.com/inward/record.url?scp=85146469838&partnerID=8YFLogxK
U2 - 10.3847/2041-8213/acaaac
DO - 10.3847/2041-8213/acaaac
M3 - Article
AN - SCOPUS:85146469838
SN - 2041-8205
VL - 942
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 2
M1 - L25
ER -