由 K2、Spitzer 与地球观测的孤立微透镜
地球与行星天体物理
2017-11-15 v1 天体物理仪器与方法
太阳与恒星天体物理
摘要
我们呈现了微透镜事件 MOA-2016-BLG-290 的结果，该事件获得了来自双轮 Kepler (K2)、Spitzer 以及地面天文台的观测。对 K2 与地面数据的联合分析得出了透镜质量与距离的两个简并解。一旦纳入（部分的）Spitzer 光变曲线，该简并被有效打破。总体而言，发现该透镜是位于银河系核球中的一颗极低质量恒星。MOA-2016-BLG-290 是首个我们获得了来自三个相距甚远（ AU）位置的信号的微透镜事件。正如 S. Refsdal 和 A. Gould 数十年前独立指出的那样，它展示了双卫星微透镜实验在减少透镜性质模糊性方面的能力。
关键词
引用
@article{arxiv.1709.09959,
title = {An Isolated Microlens Observed from K2, Spitzer and Earth},
author = {Wei Zhu and A. Udalski and C. Huang and S. Calchi Novati and T. Sumi and R. Poleski and J. Skowron and P. Mroz and M. K. Szymanski and I. Soszynski and P. Pietrukowicz and S. Kozlowski and K. Ulaczyk and M. Pawlak and C Beichman and G. Bryden and S. Carey and B. S. Gaudi and A. Gould and C. B. Henderson and Y. Shvartzvald and J. C. Yee and I. A. Bond and D. P. Bennett and D. Suzuki and N. J. Rattenbury and N. Koshimoto and F. Abe and Y. Asakura and R. K. Barry and A. Bhattacharya and M. Donachie and P. Evans and A. Fukui and Y. Hirao and Y. Itow and K. Kawasaki and M. C. A. Li and C. H. Ling and K. Masuda and Y. Matsubara and S. Miyazaki and H. Munakata and Y. Muraki and M. Nagakane and K. Ohnishi and C. Ranc and To. Saito and A. Sharan and D. J. Sullivan and P. J. Tristram and T. Yamada and A. Yonehara},
journal= {arXiv preprint arXiv:1709.09959},
year = {2017}
}
备注
8 pages, 4 figures, 1 table; submitted to ApJ Letters