Direct Detections of the Asteroidal YORP Effect

小行星 YORP 效应的直接检测

• 批准号: ST/K001566/1
• 负责人: Stephen Lowry
• 金额: $ 0.2万
• 依托单位: University of Kent
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FK001566%2F1
• 关键词: Direct; Detections; Asteroidal; YORP; Effect

Telescope time has been awarded to study the asteroidal YORP effect.Proposal Abstract: The YORP effect is a torque experienced by small asteroids that is due to both incident solar radiation pressure and the recoil effect from the anisotropic emission of thermal photons. It can modify their rotation rates and spin-axis orientations, and can explain many observed phenomena in asteroidal science. We will use the INT+WFC to obtain lightcurve coverage of several NEAs which are targets of an ESO Large Programme, the aim of which is to directly detect YORP-induced rotation period changes amongst a large sample of NEAs. The aim of this project is not to determine highly accurate period solutions for the objects, but rather to assist in the measurement of any potential phase offset in the asteroids' rotational lightcurve due to the YORP effect. The lightcurve data obtained at the INT will prove crucial to this programme since some of the targets are now unobservable from ESO.

望远镜的时间已被授予研究小行星YORP effect.Proposal摘要：YORP效应是一个扭矩经历的小行星，这是由于入射太阳辐射压力和反冲效应从各向异性发射的热光子。它可以改变它们的旋转速率和自旋轴方向，并可以解释小行星科学中观察到的许多现象。我们将使用INT+WFC来获得几个近地小行星的光变曲线覆盖范围，这些近地小行星是欧洲南方天文台大型计划的目标，其目的是直接检测大样本近地小行星中由YORP引起的旋转周期变化。该项目的目的不是确定天体的高度精确的周期解，而是协助测量由于YORP效应造成的小行星旋转光变曲线中的任何潜在相位偏移。在INT获得的光变曲线数据将证明对该计划至关重要，因为一些目标现在无法从ESO观测到。