Early Results from GLASS-JWST. V: The First Rest-frame Optical Size-Luminosity Relation of Galaxies at z > 7
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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Early Results from GLASS-JWST. V : The First Rest-frame Optical Size-Luminosity Relation of Galaxies at z > 7. / Yang, L.; Morishita, T.; Leethochawalit, N.; Castellano, M.; Calabro, A.; Treu, T.; Bonchi, A.; Fontana, A.; Mason, C.; Merlin, E.; Paris, D.; Trenti, M.; Roberts-Borsani, G.; Bradac, M.; Vanzella, E.; Vulcani, B.; Marchesini, D.; Ding, X.; Nanayakkara, T.; Birrer, S.; Glazebrook, K.; Jones, T.; Boyett, K.; Santini, P.; Strait, Victoria Bellinger; Wang, X.
I: Astrophysical Journal Letters, Bind 938, Nr. 2, 17, 18.10.2022.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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TY - JOUR
T1 - Early Results from GLASS-JWST. V
T2 - The First Rest-frame Optical Size-Luminosity Relation of Galaxies at z > 7
AU - Yang, L.
AU - Morishita, T.
AU - Leethochawalit, N.
AU - Castellano, M.
AU - Calabro, A.
AU - Treu, T.
AU - Bonchi, A.
AU - Fontana, A.
AU - Mason, C.
AU - Merlin, E.
AU - Paris, D.
AU - Trenti, M.
AU - Roberts-Borsani, G.
AU - Bradac, M.
AU - Vanzella, E.
AU - Vulcani, B.
AU - Marchesini, D.
AU - Ding, X.
AU - Nanayakkara, T.
AU - Birrer, S.
AU - Glazebrook, K.
AU - Jones, T.
AU - Boyett, K.
AU - Santini, P.
AU - Strait, Victoria Bellinger
AU - Wang, X.
PY - 2022/10/18
Y1 - 2022/10/18
N2 - We present the first rest-frame optical size-luminosity relation of galaxies at z > 7, using the NIRCam imaging data obtained by the GLASS James Webb Space Telescope Early Release Science (GLASS-JWST-ERS) program, providing the deepest extragalactic data of the ERS campaign. Our sample consists of 19 photometrically selected bright galaxies with m (F444W) 7. Given the limited sample size and magnitude range, we first fix the slope to that observed for larger samples in rest-frame UV using Hubble Space Telescope samples. The median size r (0) at the reference luminosity M = -21 decreases slightly from rest-frame optical (600 +/- 80 pc) to UV (450 +/- 130 pc). We then refit the size-luminosity relation allowing the slope to vary. The slope is consistent with beta similar to 0.2 for all bands except F150W, where we find a marginally steeper slope of beta = 0.53 +/- 0.15. The steep UV slope is mainly driven by the smallest and faintest galaxies. If confirmed by larger samples, it implies that the UV size-luminosity relation breaks toward the faint end, as suggested by lensing studies.
AB - We present the first rest-frame optical size-luminosity relation of galaxies at z > 7, using the NIRCam imaging data obtained by the GLASS James Webb Space Telescope Early Release Science (GLASS-JWST-ERS) program, providing the deepest extragalactic data of the ERS campaign. Our sample consists of 19 photometrically selected bright galaxies with m (F444W) 7. Given the limited sample size and magnitude range, we first fix the slope to that observed for larger samples in rest-frame UV using Hubble Space Telescope samples. The median size r (0) at the reference luminosity M = -21 decreases slightly from rest-frame optical (600 +/- 80 pc) to UV (450 +/- 130 pc). We then refit the size-luminosity relation allowing the slope to vary. The slope is consistent with beta similar to 0.2 for all bands except F150W, where we find a marginally steeper slope of beta = 0.53 +/- 0.15. The steep UV slope is mainly driven by the smallest and faintest galaxies. If confirmed by larger samples, it implies that the UV size-luminosity relation breaks toward the faint end, as suggested by lensing studies.
KW - Galaxy evolution
KW - EVOLUTION
KW - IV.
U2 - 10.3847/2041-8213/ac8803
DO - 10.3847/2041-8213/ac8803
M3 - Letter
VL - 938
JO - The Astrophysical Journal Letters
JF - The Astrophysical Journal Letters
SN - 2041-8205
IS - 2
M1 - 17
ER -
ID: 323614227