OGLE-2017-BLG-0039：由质量测量识别出透镜光的微透镜事件
太阳与恒星天体物理
2018-11-28 v1
摘要
我们给出对 caustic 穿越双星微透镜事件 OGLE-2017-BLG-0039 的分析。得益于该事件极长的持续时间，其事件时间尺度 天，尽管其微透镜视差的小值 ，仍被精确测得。对源星进入和离开 caustic 期间良好分辨的 caustic 穿越的分析给出了角爱因斯坦半径 ~mas。所测得的 和 表明该透镜是由两颗质量分别为 和 的恒星组成的双星，位于距离 kpc 处。由所确定的透镜质量和距离估计的透镜颜色和亮度可知，预计 波段混合流量的 来自透镜。因此，该事件是一个亮透镜事件的罕见案例，高分辨率后续观测可确认透镜的性质。
引用
@article{arxiv.1809.10831,
title = {OGLE-2017-BLG-0039: Microlensing Event with Light from the Lens Identified from Mass Measurement},
author = {C. Han and Y. K. Jung and A. Udalski and I. Bond and V. Bozza and M. D. Albrow and S. -J. Chung and A. Gould and K. -H. Hwang and D. Kim and C. -U. Lee and H. -W. Kim and Y. -H. Ryu and I. -G. Shin and J. C. Yee and Y. Shvartzvald and S. -M. Cha and S. -L. Kim and D. -J. Kim and D. -J. Lee and Y. Lee and B. -G. Park and R. W. Pogge and M. K. Szymański and P. Mróz and J. Skowron and R. Poleski and I. Soszyński and S. Kozłowski and P. Pietrukowicz and K. Ulaczyk and M. Pawlak and F. Abe and R. Barry and D. P. Bennett and A. Bhattacharya and M. Donachie and P. Evans and A. Fukui and Y. Hirao and Y. Itow and K. Kawasaki and N. Koshimoto and M. C. A. Li and C. H. Ling and Y. Matsubara and S. Miyazaki and H. Munakata and Y. Muraki and M. Nagakane and K. Ohnishi and C. Ranc and N. Rattenbury and T. Saito and A. Sharan and D. J. Sullivan and T. Sumi and D. Suzuki and P. J. Tristram and T. Yamada and A. Yonehara},
journal= {arXiv preprint arXiv:1809.10831},
year = {2018}
}
备注
8 pages, 6 figures, 5 tables