Abstract
Abstract
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.
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
13 articles.
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