标题： 一种用于天体测量微透镜的公开代码与轮廓积分 显示英文标题

标题： A public code for astrometric microlensing with contour integration

摘要： 我们提出了首个用于计算微透镜事件期间视向质心偏移的公开代码。 该计算基于轮廓积分方案，涵盖了具有任意肢暗分布的有限源的单透镜和双透镜情况。 这使得可以对有限源大小对视向双透镜微透镜的影响进行一般性的详细研究。 新代码已嵌入到 VBBinaryLensing 的 3.0 版本中，该版本为当前巡天和未来空间任务提供的微透镜数据提供了强大的计算工具。 显示英文摘要

摘要： We present the first public code for the calculation of the astrometric centroid shift occurring during microlensing events. The computation is based on the contour integration scheme and covers single and binary lensing of finite sources with arbitrary limb darkening profiles. This allows for general detailed investigations of the impact of finite source size in astrometric binary microlensing. The new code is embedded in version 3.0 of VBBinaryLensing, which offers a powerful computational tool for extensive studies of microlensing data from current surveys and future space missions.