A primary scientific goal of the future Habitable Worlds Observatory will be the direct detection and characterization of Earth-like planets. Estimates of the exoplanet yields for this concept will help guide mission design through detailed trade studies. It is therefore critical that yield estimation codes optimally adapt observations to the mission’s performance parameters to ensure accurate trade studies. To aid in this, we implement wavelength optimization in yield calculations for the first time, allowing the yield code to determine the ideal detection and characterization bandpasses. We use this capability to confirm the observational wavelength assumptions made for the large UV/Optical/IR surveyor, design B (LUVOIR-B) study, namely that the optimum detection wavelength is 500 nm for the majority of targets and the optimum wavelength to detect water is near 1000 nm, given LUVOIR-B’s assumed instrument performance parameters. We show that including the wavelength-dependent albedo of an Earth twin as a prior provides no significant benefit to the yields of exoEarth candidates and caution against tuning observations to modern Earth twins. We also show that coronagraphs whose inner working angles are similar to step functions may benefit from wavelength optimization and demonstrate how wavelength-dependent instrument performance can impact the optimum wavelengths for detection and characterization. The optimization methods we implement automate wavelength selection and remove uncertainties regarding these choices, helping to adapt the observations to the instrument’s performance parameters.

中文翻译：

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为宜居世界天文台的地外勘测优化带通

未来宜居世界观测站的主要科学目标将是直接探测和表征类地行星。对这一概念的系外行星产量的估计将有助于通过详细的权衡研究来指导任务设计。因此，产量估算代码必须根据任务的性能参数最佳地调整观测结果，以确保准确的贸易研究，这一点至关重要。为了帮助实现这一目标，我们首次在良率计算中实现了波长优化，允许良率代码确定理想的检测和表征带通。我们利用此功能来确认针对大型紫外/光学/红外测量仪设计 B (LUVOIR-B) 研究所做的观测波长假设，即对于大多数目标而言，最佳检测波长为 500 nm，并且检测的最佳波长根据 LUVOIR-B 假定的仪器性能参数，水的波长接近 1000 nm。我们表明，将地球双胞胎的波长相关反照率作为先验，对外地球候选者的产量没有显着的好处，并警告不要将观测调整到现代地球双胞胎。我们还表明，内部工作角度类似于阶跃函数的日冕仪可能会受益于波长优化，并证明与波长相关的仪器性能如何影响检测和表征的最佳波长。我们实施的优化方法可自动选择波长并消除这些选择的不确定性，有助于使观测结果适应仪器的性能参数。