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arXiv 1901.05964astro-ph.GA
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对JWST - II的半分析预测。z = 4-10星系的物理性质和标度关系

Semi-analytic forecasts for JWST -- II. physical properties and scaling relations for galaxies at z = 4-10

L. Y. Aaron Yung, Rachel S. Somerville, Gergö Popping, Steven L. Finkelstein, Harry C. Ferguson, Romeel Davé

摘要:

期待已久的詹姆斯·韦伯太空望远镜(JWST)将能够直接探测红移非常高的星系的大样本。使用成熟的,计算效率高的圣克鲁斯半解析模型,最近实施的多相气体分区和基于H2的恒星形成食谱,我们预测了各种各样的星系属性的星系人口在$z$ = 4-10。在这项工作中,我们提供了预测高红移星系的物理性质和链接到他们的光度特性。与物理参数校准仅$z\sim0$观测,我们的模型预测是在良好的协议与当前的观测约束恒星质量和恒星形成率分布函数高达$z \sim 8$。我们还提供预测代表宽,深,和透镜JWST调查配置。我们研究了星系关键性质的红移演化以及它们之间的标度关系。利用我们的模型的高计算效率,我们研究了系统地改变模型参数的影响。本研究中提出的所有分布函数和比例关系可在https://www.simonsfoundation.org/semi-analytic-forecasts-for-jwst/上获得。

英文摘要:

The long-anticipated James Webb Space Telescope (JWST) will be able to directly detect large samples of galaxies at very high redshift. Using the well-established, computationally efficient Santa Cruz semi-analytic model, with recently implemented multiphase gas partitioning and H2-based star formation recipes, we make predictions for a wide variety of galaxy properties for galaxy populations at $z$ = 4-10. In this work, we provide forecasts for the physical properties of high-redshift galaxies and links to their photometric properties. With physical parameters calibrated only to $z\sim0$ observations, our model predictions are in good agreement with current observational constraints on stellar mass and star formation rate distribution functions up to $z \sim 8$. We also provide predictions representing wide, deep, and lensed JWST survey configurations. We study the redshift evolution of key galaxy properties and the scaling relations among them. Taking advantage of our models' high computational efficiency, we study the impact of systematically varying the model parameters. All distribution functions and scaling relations presented in this work are available at https://www.simonsfoundation.org/semi-analytic-forecasts-for-jwst/.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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