Galaxy Quenching at the High Redshift Frontier: A Fundamental Test of Cosmological Models in the Early Universe with JWST-CEERS
Galaxy Quenching at the High Redshift Frontier: A Fundamental Test of Cosmological Models in the Early Universe with JWST-CEERS
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DOI：
10.3847/1538-4357/ad0a98
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发表时间：
2023-11
期刊：
影响因子：
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通讯作者：
A. Bluck;C. Conselice;K. Ormerod;J. Piotrowska;N. Adams;D. Austin;J. Caruana;K. Duncan
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文献类型：
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作者：
A. Bluck;C. Conselice;K. Ormerod;J. Piotrowska;N. Adams;D. Austin;J. Caruana;K. Duncan
本文利用JWST-CEERS数据分析了宇宙历史上前0.5-3 Gyr内大质量星系（M * > 109.5 M）中星星形成的猝灭现象。我们利用先进的统计方法相结合，准确地约束淬火在多维和相互关联的参数空间的内在依赖。具体来说，我们应用随机森林分类，面积统计，偏相关分析的JWST-CEERS数据。首先，我们从两个最先进的宇宙学模拟（IllustrisTNG和EAGLE）中确定了关键的可检验预测。这两个模拟都预测淬火应该受到早期宇宙中超大质量黑洞质量的调节。此外，这两个模拟确定恒星的潜力（*）作为最佳代理黑洞质量的光度数据。在光度观测中，我们对黑洞质量没有直接的约束，我们发现恒星势是大质量星系在z = 0-8的所有时期淬灭的最具预测性的参数，与对该样本的模拟预测完全一致。恒星势优于恒星质量，星系大小，星系密度和Sérsic指数作为JWST-CEERS探测的所有时期的静止预测。总的来说，这些结果强烈暗示了在整个宇宙历史中存在一种稳定的猝灭机制，该机制与星系的中心引力势密切相关。这种联系在宇宙学模型中被解释为大质量黑洞在深势威尔斯中形成和生长，随后通过喷射和预防性的活动星系核反馈的混合来淬灭星系。
We present an analysis of the quenching of star formation in massive galaxies (M * > 109.5 M ⊙) within the first 0.5–3 Gyr of the Universe’s history utilizing JWST-CEERS data. We utilize a combination of advanced statistical methods to accurately constrain the intrinsic dependence of quenching in a multidimensional and intercorrelated parameter space. Specifically, we apply random forest classification, area statistics, and a partial correlation analysis to the JWST-CEERS data. First, we identify the key testable predictions from two state-of-the-art cosmological simulations (IllustrisTNG and EAGLE). Both simulations predict that quenching should be regulated by supermassive black hole mass in the early Universe. Furthermore, both simulations identify the stellar potential (ϕ *) as the optimal proxy for black hole mass in photometric data. In photometric observations, where we have no direct constraints on black hole masses, we find that the stellar potential is the most predictive parameter of massive galaxy quenching at all epochs from z = 0–8, exactly as predicted by simulations for this sample. The stellar potential outperforms stellar mass, galaxy size, galaxy density, and Sérsic index as a predictor of quiescence at all epochs probed in JWST-CEERS. Collectively, these results strongly imply a stable quenching mechanism operating throughout cosmic history, which is closely connected to the central gravitational potential in galaxies. This connection is explained in cosmological models via massive black holes forming and growing in deep potential wells, and subsequently quenching galaxies through a mix of ejective and preventative active galactic nucleus feedback.