宇宙学星系巡天模拟的经验方法：SPHEREx低分辨率Spectroscopy的应用
An Empirical Approach to Cosmological Galaxy Survey Simulation: Application to SPHEREx Low-Resolution Spectroscopy
摘要：
为了预测即将到来的宇宙学任务的性能，在宇宙学体积上的星系人口的高度精确的模型是必要的。我们提出了一个数据驱动的模型的星系人口约束深0.1-8 $\rm μm$成像和光谱数据的COSMOS调查，与近期目标模拟光谱红移性能的建议SPHEREx任务。SPHEREx将以中等空间分辨率（$\sim6"$）在0.75-4.18 $\rm μm$波长范围内获得全天空$R\sim41$分光光度法，并在4.18-5 $\rm μm$波长范围内获得$R\sim135$。我们表明，我们的模拟准确地再现了一系列已知的星系特性，封装了星系群的全部复杂性，并实现了逼真的、完整的端到端模拟来预测任务性能。最后，我们讨论了未来宇宙学任务的模拟框架的潜在应用，并给出了已发布的数据产品的描述。
英文摘要：
Highly accurate models of the galaxy population over cosmological volumes are necessary in order to predict the performance of upcoming cosmological missions. We present a data-driven model of the galaxy population constrained by deep 0.1-8 $\rm μm$ imaging and spectroscopic data in the COSMOS survey, with the immediate goal of simulating the spectroscopic redshift performance of the proposed SPHEREx mission. SPHEREx will obtain over the full-sky $R\sim41$ spectrophotometry at moderate spatial resolution ($\sim6"$) over the wavelength range 0.75-4.18 $\rm μm$ and $R\sim135$ over the wavelength range 4.18-5 $\rm μm$. We show that our simulation accurately reproduces a range of known galaxy properties, encapsulating the full complexity of the galaxy population and enables realistic, full end-to-end simulations to predict mission performance. Finally, we discuss potential applications of the simulation framework to future cosmology missions and give a description of released data products.
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。
