Early Results from GLASS-JWST. XVIII. A First Morphological Atlas of the 1 < z < 5 Universe in the Rest-frame Optical
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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Early Results from GLASS-JWST. XVIII. A First Morphological Atlas of the 1 < z < 5 Universe in the Rest-frame Optical. / Jacobs, C.; Glazebrook, K.; Calabro, A.; Treu, T.; Nannayakkara, T.; Jones, T.; Merlin, E.; Abraham, R.; Stevens, A. R. H.; Vulcani, B.; Yang, L.; Bonchi, A.; Boyett, K.; Bradac, M.; Castellano, M.; Fontana, A.; Marchesini, D.; Malkan, M.; Mason, C.; Morishita, T.; Paris, D.; Santini, P.; Trenti, M.; Wang, X.
I: Astrophysical Journal Letters, Bind 948, Nr. 2, 13, 01.05.2023.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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TY - JOUR
T1 - Early Results from GLASS-JWST. XVIII. A First Morphological Atlas of the 1 < z < 5 Universe in the Rest-frame Optical
AU - Jacobs, C.
AU - Glazebrook, K.
AU - Calabro, A.
AU - Treu, T.
AU - Nannayakkara, T.
AU - Jones, T.
AU - Merlin, E.
AU - Abraham, R.
AU - Stevens, A. R. H.
AU - Vulcani, B.
AU - Yang, L.
AU - Bonchi, A.
AU - Boyett, K.
AU - Bradac, M.
AU - Castellano, M.
AU - Fontana, A.
AU - Marchesini, D.
AU - Malkan, M.
AU - Mason, C.
AU - Morishita, T.
AU - Paris, D.
AU - Santini, P.
AU - Trenti, M.
AU - Wang, X.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - We present a rest-frame optical morphological analysis of galaxies observed with the NIRCam imager on the James Webb Space Telescope (JWST) as part of the GLASS-JWST Early Release Science program. We select 388 sources at redshifts 0.8 < z < 5.4 and use the seven 0.9-5 mu m NIRCam filters to generate rest-frame gri composite color images, and conduct visual morphological classification. Compared to Hubble Space Telescope (HST)-based work we find a higher incidence of disks and bulges than expected at z > 1.5, revealed by rest-frame optical imaging. We detect 123 clear disks (58 at z > 1.5) of which 76 have bulges. No evolution of bulge fraction with redshift is evident: 61% at z < 2 (N = 110) versus 60% at z >= 2 (N = 13). A stellar mass dependence is evident, with bulges visible in 80% of all disk galaxies with mass >10(9.5) M (circle dot) (N = 41) but only 52% at M < 10(9.5) M (circle dot) (N = 82). We supplement visual morphologies with nonparametric measurements of Gini and asymmetry coefficients in the rest-frame i band. Our sources are more asymmetric than local galaxies, with slightly higher Gini values. When compared to high-z rest-frame ultraviolet measurements with HST, JWST shows more regular morphological types such as disks, bulges, and spiral arms at z > 1.5, with smoother (i.e., lower Gini) and more symmetrical light distributions.
AB - We present a rest-frame optical morphological analysis of galaxies observed with the NIRCam imager on the James Webb Space Telescope (JWST) as part of the GLASS-JWST Early Release Science program. We select 388 sources at redshifts 0.8 < z < 5.4 and use the seven 0.9-5 mu m NIRCam filters to generate rest-frame gri composite color images, and conduct visual morphological classification. Compared to Hubble Space Telescope (HST)-based work we find a higher incidence of disks and bulges than expected at z > 1.5, revealed by rest-frame optical imaging. We detect 123 clear disks (58 at z > 1.5) of which 76 have bulges. No evolution of bulge fraction with redshift is evident: 61% at z < 2 (N = 110) versus 60% at z >= 2 (N = 13). A stellar mass dependence is evident, with bulges visible in 80% of all disk galaxies with mass >10(9.5) M (circle dot) (N = 41) but only 52% at M < 10(9.5) M (circle dot) (N = 82). We supplement visual morphologies with nonparametric measurements of Gini and asymmetry coefficients in the rest-frame i band. Our sources are more asymmetric than local galaxies, with slightly higher Gini values. When compared to high-z rest-frame ultraviolet measurements with HST, JWST shows more regular morphological types such as disks, bulges, and spiral arms at z > 1.5, with smoother (i.e., lower Gini) and more symmetrical light distributions.
KW - DIGITAL SKY SURVEY
KW - STAR-FORMATION ACTIVITY
KW - EARLY-TYPE GALAXIES
KW - SIMILAR-TO 2
KW - MASSIVE GALAXIES
KW - DISTANT GALAXIES
KW - HUBBLE SEQUENCE
KW - SURVEY DESIGN
KW - DATA RELEASE
KW - DEEP FIELD
U2 - 10.3847/2041-8213/accd6d
DO - 10.3847/2041-8213/accd6d
M3 - Letter
VL - 948
JO - The Astrophysical Journal Letters
JF - The Astrophysical Journal Letters
SN - 2041-8205
IS - 2
M1 - 13
ER -
ID: 347799492