Nancy Roman 空间望远镜：探索本地宇宙之外的恒星形成活动
Nancy Roman Space Telescope: Star Formation Beyond the Local Universe
The Nancy Roman Space Telescope (WFIRST) is a near-infrared wide-field survey telescope planning to be deployed at the Sun-Earth L2 orbit in 2026. Equipped with a wide field instrument (WFI), Roman will survey 2000 square degrees of the sky with both imaging and slitless spectrum coverage. This planned program will make major contributions toward probing the nature of dark energy, exploring the origin and evolution of galaxies, as well as discovering planets around other stars. In this talk, I will mainly focus on the ability of Roman to probe star formation beyond z ~ 1. I will start with a brief introduction regarding the WFI imaging and spectroscopic component, followed by a demonstration of their ability to discover a great number of emission line galaxies due to increased depth and survey area. Then, combining previous works from HST and JWST, I will discuss further the capability of Roman in measuring both integrated and spatially resolved star formation activities above z ~ 1. Finally, I will discuss the potential of a combined multi-wavelength survey between CSST and Roman in measuring AGN host galaxies.
