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arXiv · 2207.11135

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·V. Strait·A. Calabro`·L. Pentericci·M. Bradac·X. Wang·C. Scarlata
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Abstract

We present the first James Webb Space Telescope/NIRCam-led determination of $7 9.5$. 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 on galaxy formation in the first billion years.

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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, V. Strait, A. Calabro`, L. Pentericci, M. Bradac, X. Wang, C. Scarlata. 2022-07-22. Early results from GLASS-JWST. X: Rest-frame UV-optical properties of galaxies at 7 < z < 9. https://doi.org/10.3847/2041-8213%2Fac959b

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