JWST FRESCO: a comprehensive census of H$\beta$+[OIII] emitters at 6.8<z<9.0 in the GOODS fields

R. A. Meyer; P. A. Oesch; E. Giovinazzo; A. Weibel; G. Brammer; J. Matthee; R. P. Naidu; R. J. Bouwens; J. Chisholm; A. Covelo-Paz; Y. Fudamoto; M. Maseda; E. Nelson; I. Shivaei; M. Xiao; T. Herard-Demanche; G. D. Illingworth; J. Kerutt; I. Kramarenko; I. Labbe; E. Leonova; D. Magee; J. Matharu; G. Prieto Lyon; N. Reddy; D. Schaerer; A. Shapley; M. Stefanon; M. A. Wozniak; S. Wuyts

doi:10.1093/mnras/stae2353

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arXiv · 2405.05111

JWST FRESCO: a comprehensive census of H$\beta$+[OIII] emitters at 6.8<z<9.0 in the GOODS fields

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Abstract

We present the census of H$\beta$+[OIII] 4960,5008 \AA emitters at 6.8 7$ galaxies. We report a rapid decline of the [OIII] luminosity density at $z\gtrsim 6-7$ which cannot be explained by the evolution of the cosmic star-formation rate density. Finally we find that FRESCO detects in only 2h galaxies likely accounting for $\sim 10-20\%$ of the ionising budget at $z=7-8$ (assuming an escape fraction of 10%), raising the prospect of directly detecting a significant fraction of the sources of reionisation with JWST.

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R. A. Meyer, P. A. Oesch, E. Giovinazzo, A. Weibel, G. Brammer, J. Matthee, R. P. Naidu, R. J. Bouwens, J. Chisholm, A. Covelo-Paz, Y. Fudamoto, M. Maseda, E. Nelson, I. Shivaei, M. Xiao, T. Herard-Demanche, G. D. Illingworth, J. Kerutt, I. Kramarenko, I. Labbe, E. Leonova, D. Magee, J. Matharu, G. Prieto Lyon, N. Reddy, D. Schaerer, A. Shapley, M. Stefanon, M. A. Wozniak, S. Wuyts. 2024-05-08. JWST FRESCO: a comprehensive census of H$\beta$+[OIII] emitters at 6.8<z<9.0 in the GOODS fields. https://doi.org/10.1093/mnras%2Fstae2353

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