Simulating and optimizing the Nancy Grace Roman Space Telescope exoplanet survey

罗曼是继JWST之后NASA的下一项旗舰任务，耗资43亿美元。它将于2026年底发射升空，并将把其5年名义任务的25%用于银河系凸起时间域调查(GBTDS)。罗马系外行星凌日调查(TRExS)是美国国家航空航天局(NASA)选定的一项调查，目的是在GBTDS数据集中搜索凌日系外行星。TREXS预计将发现60000到200000颗凌日系外行星，使目前已知的数量增加一个数量级以上。凯林斯领导了TREXS第二工作组(调查、优化和系外行星人口统计)，该项目将对该工作组的筹备工作作出重大贡献。该项目将涉及建立系外行星系统的银河系模拟，以评估罗马系外行星产额对人口统计参数的敏感性，包括宿主分离、行星-宿主质量/大小比、偏心率和相互倾角。

Roman is the next NASA flagship mission after JWST, at a cost of $4.3 billion. It will launch in late 2026 and will spend around 25% of its 5-year nominal mission on the Galactic Bulge Time Domain Survey (GBTDS). Transits in the Roman Exoplanet Survey (TRExS) is a NASA selected survey to search for transiting exoplanets within the GBTDS dataset. TRExS is expected to find 60000 to 200000 transiting exoplanets, increasing the number currently known by more than an order of magnitude. Kerins leads Working Group 2 (survey optimization and exoplanet demographics) for TRExS and this project will form a major contribution to the preparatory work of the group. The project will involve building a Galactic simulation of exoplanetary systems in order to assess the sensitivity of Roman exoplanet yield to demographic parameters including host separation, planet-host mass/size ratio, eccentricity and mutual inclination.