AI 中文总结
该研究基于OASIS巡天，提出为罗曼日冕仪技术演示阶段新增HIP 99770的光谱模式观测，明确了3个适合的观测目标及对应参考星，支撑日冕仪性能验证与伴星表征。
AI 中文摘要
罗曼日冕仪技术演示旨在实现仪器暗区内对比度小于10⁻⁷，以及探测和表征明亮恒星周围暗弱伴星的特性。本文描述了一项针对罗曼日冕仪技术演示阶段观测潜力的研究结果，该研究基于昴星团望远镜正在开展的OASIS巡天及前期巡天工作。OASIS为技术演示阶段提供了至少3个带有已成像伴星的极具吸引力的目标——褐矮星HIP 71618 B，以及超级木星HIP 54515 b和HIP 99770 b。HIP 71618非常适合演示日冕仪的核心性能要求，而这三个目标均非常适合光谱模式观测。每个目标都可与经伴星验证的点扩散函数（PSF）参考星配对。虽然HIP 71618和HIP 54515已被规划用于技术演示阶段观测，但本文还阐述了将HIP 99770的光谱模式观测也纳入的项目及科学价值。
英文摘要
The Roman Coronagraph technology demonstration focuses on achieving $<$ 10$^{-7}$ contrasts within the instrument's dark hole and our ability to detect and characterize properties of faint companions around bright stars. Here, we describe results from a study of potential Roman Coronagraph technology demonstration phase observations focused on these goals, informed by the ongoing OASIS survey at the Subaru Telescope and precursor survey work. OASIS provides at least three compelling targets for the technology demonstration phase with imaged companions - the HIP 71618 B brown dwarf and superjovian planets HIP 54515 b and HIP 99770 b. HIP 71618 is well suited for demonstrating the Coronagraph's core performance requirement while all three targets are well suited for spectroscopic mode observations. Each target can be paired with a PSF reference star vetted for companions. While HIP 71618 and HIP 54515 are already planned for Technology Demonstration phase observations, we describe the programmatic and scientific value of adding spectroscopic mode observations of HIP 99770 as well.
Comments14 pgs., Proc. SPIE in press
