Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9

N. Leethochawalit; M. Trenti; P. Santini; L. Yang; E. Merlin; M. Castellano; A. Fontana; T. Treu; C. Mason; K. Glazebrook; T. Jones; B. Vulcani; T. Nanayakkara; D. Marchesini; S. Mascia; T. Morishita; G. Roberts-Borsani; A. Bonchi; D. Paris; K. Boyett; James B Strait; A. Calabro; L. Pentericci; M. Bradac; X. Wang; C. Scarlata

doi:10.3847/2041-8213/ac959b

Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9

N. Leethochawalit^*, M. Trenti, P. Santini, L. Yang, E. Merlin, M. Castellano, A. Fontana, T. Treu, C. Mason, K. Glazebrook, T. Jones, B. Vulcani, T. Nanayakkara, D. Marchesini, S. Mascia, T. Morishita, G. Roberts-Borsani, A. Bonchi, D. Paris, K. BoyettJames B Strait, A. Calabro, L. Pentericci, M. Bradac, X. Wang, C. Scarlata

^*Corresponding author for this work

The Cosmic Dawn Center

Research output: Contribution to journal › Letter › Research › peer-review

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Abstract

We present the first James Webb Space Telescope/NIRCam-led determination of 7 < z < 9 galaxy properties based on broadband imaging from 0.8 to 5 mu m as part of the GLASS-JWST Early Release Science program. This is the deepest data set acquired at these wavelengths to date, with an angular resolution less than or similar to 0.'' 14. We robustly identify 13 galaxies with signal-to-noise ratio greater than or similar to 8 in F444W from 8 arcmin(2) of data at m (AB) 9.5. Their star formation main sequence is consistent with predictions from simulations. Lastly, we introduce an analytical framework to constrain main-sequence evolution at z > 7 based on galaxy ages and basic assumptions, through which we find results consistent with expectations from cosmological simulations. While this work only gives a glimpse of the properties of typical galaxies that are thought to drive the reionization of the universe, it clearly shows the potential of JWST to unveil unprecedented details of galaxy formation in the first billion years.

Original language	English
Article number	L26
Journal	Astrophysical Journal Letters
Volume	942
Issue number	2
Number of pages	10
ISSN	2041-8205
DOIs	https://doi.org/10.3847/2041-8213/ac959b
Publication status	Published - 10 Jan 2023

Keywords

EARLY RELEASE SCIENCE
STAR-FORMATION RATES
PHOTOMETRIC REDSHIFTS
TO 8
LUMINOSITY FUNCTION
EPOCH
REIONIZATION
CATALOGS
UNIVERSE
MASSES

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Leethochawalit_2023_ApJL_942_L26Final published version, 17.9 MBLicence: CC BY

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Leethochawalit, N., Trenti, M., Santini, P., Yang, L., Merlin, E., Castellano, M., Fontana, A., Treu, T., Mason, C., Glazebrook, K., Jones, T., Vulcani, B., Nanayakkara, T., Marchesini, D., Mascia, S., Morishita, T., Roberts-Borsani, G., Bonchi, A., Paris, D., ... Scarlata, C. (2023). Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9. Astrophysical Journal Letters, 942(2), [L26]. https://doi.org/10.3847/2041-8213/ac959b

Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9. / Leethochawalit, N.; Trenti, M.; Santini, P.; Yang, L.; Merlin, E.; Castellano, M.; Fontana, A.; Treu, T.; Mason, C.; Glazebrook, K.; Jones, T.; Vulcani, B.; Nanayakkara, T.; Marchesini, D.; Mascia, S.; Morishita, T.; Roberts-Borsani, G.; Bonchi, A.; Paris, D.; Boyett, K.; Strait, James B; Calabro, A.; Pentericci, L.; Bradac, M.; Wang, X.; Scarlata, C.

In: Astrophysical Journal Letters, Vol. 942, No. 2, L26, 10.01.2023.

Research output: Contribution to journal › Letter › Research › peer-review

Leethochawalit, N, Trenti, M, Santini, P, Yang, L, Merlin, E, Castellano, M, Fontana, A, Treu, T, Mason, C, Glazebrook, K, Jones, T, Vulcani, B, Nanayakkara, T, Marchesini, D, Mascia, S, Morishita, T, Roberts-Borsani, G, Bonchi, A, Paris, D, Boyett, K, Strait, JB, Calabro, A, Pentericci, L, Bradac, M, Wang, X & Scarlata, C 2023, 'Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9', Astrophysical Journal Letters, vol. 942, no. 2, L26. https://doi.org/10.3847/2041-8213/ac959b

Leethochawalit, N. ; Trenti, M. ; Santini, P. ; Yang, L. ; Merlin, E. ; Castellano, M. ; Fontana, A. ; Treu, T. ; Mason, C. ; Glazebrook, K. ; Jones, T. ; Vulcani, B. ; Nanayakkara, T. ; Marchesini, D. ; Mascia, S. ; Morishita, T. ; Roberts-Borsani, G. ; Bonchi, A. ; Paris, D. ; Boyett, K. ; Strait, James B ; Calabro, A. ; Pentericci, L. ; Bradac, M. ; Wang, X. ; Scarlata, C. / Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9. In: Astrophysical Journal Letters. 2023 ; Vol. 942, No. 2.

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abstract = "We present the first James Webb Space Telescope/NIRCam-led determination of 7 < z < 9 galaxy properties based on broadband imaging from 0.8 to 5 mu m as part of the GLASS-JWST Early Release Science program. This is the deepest data set acquired at these wavelengths to date, with an angular resolution less than or similar to 0.'' 14. We robustly identify 13 galaxies with signal-to-noise ratio greater than or similar to 8 in F444W from 8 arcmin(2) of data at m (AB) 9.5. Their star formation main sequence is consistent with predictions from simulations. Lastly, we introduce an analytical framework to constrain main-sequence evolution at z > 7 based on galaxy ages and basic assumptions, through which we find results consistent with expectations from cosmological simulations. While this work only gives a glimpse of the properties of typical galaxies that are thought to drive the reionization of the universe, it clearly shows the potential of JWST to unveil unprecedented details of galaxy formation in the first billion years.",

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AU - Trenti, M.

AU - Santini, P.

AU - Yang, L.

AU - Merlin, E.

AU - Castellano, M.

AU - Fontana, A.

AU - Treu, T.

AU - Mason, C.

AU - Glazebrook, K.

AU - Jones, T.

AU - Vulcani, B.

AU - Nanayakkara, T.

AU - Marchesini, D.

AU - Mascia, S.

AU - Morishita, T.

AU - Roberts-Borsani, G.

AU - Bonchi, A.

AU - Paris, D.

AU - Boyett, K.

AU - Strait, James B

AU - Calabro, A.

AU - Pentericci, L.

AU - Bradac, M.

AU - Wang, X.

AU - Scarlata, C.

PY - 2023/1/10

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N2 - We present the first James Webb Space Telescope/NIRCam-led determination of 7 < z < 9 galaxy properties based on broadband imaging from 0.8 to 5 mu m as part of the GLASS-JWST Early Release Science program. This is the deepest data set acquired at these wavelengths to date, with an angular resolution less than or similar to 0.'' 14. We robustly identify 13 galaxies with signal-to-noise ratio greater than or similar to 8 in F444W from 8 arcmin(2) of data at m (AB) 9.5. Their star formation main sequence is consistent with predictions from simulations. Lastly, we introduce an analytical framework to constrain main-sequence evolution at z > 7 based on galaxy ages and basic assumptions, through which we find results consistent with expectations from cosmological simulations. While this work only gives a glimpse of the properties of typical galaxies that are thought to drive the reionization of the universe, it clearly shows the potential of JWST to unveil unprecedented details of galaxy formation in the first billion years.

AB - We present the first James Webb Space Telescope/NIRCam-led determination of 7 < z < 9 galaxy properties based on broadband imaging from 0.8 to 5 mu m as part of the GLASS-JWST Early Release Science program. This is the deepest data set acquired at these wavelengths to date, with an angular resolution less than or similar to 0.'' 14. We robustly identify 13 galaxies with signal-to-noise ratio greater than or similar to 8 in F444W from 8 arcmin(2) of data at m (AB) 9.5. Their star formation main sequence is consistent with predictions from simulations. Lastly, we introduce an analytical framework to constrain main-sequence evolution at z > 7 based on galaxy ages and basic assumptions, through which we find results consistent with expectations from cosmological simulations. While this work only gives a glimpse of the properties of typical galaxies that are thought to drive the reionization of the universe, it clearly shows the potential of JWST to unveil unprecedented details of galaxy formation in the first billion years.

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KW - PHOTOMETRIC REDSHIFTS

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KW - LUMINOSITY FUNCTION

KW - EPOCH

KW - REIONIZATION

KW - CATALOGS

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