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  • 标题:MagAO Observations of the Binary Microlens OGLE-2014-BLG-1050 Prefer the Higher-mass Solution
  • 本地全文:下载
  • 作者:Xiaojia Xie ; Subo Dong ; Wei Zhu
  • 期刊名称:The Astronomical journal
  • 印刷版ISSN:0004-6256
  • 电子版ISSN:1538-3881
  • 出版年度:2021
  • 卷号:161
  • 期号:3
  • 页码:1-4
  • DOI:10.3847/1538-3881/abd6c0
  • 语种:English
  • 出版社:American Institute of Physics
  • 摘要:We report adaptive optics (AO) follow-up imaging of OGLE-2014-BLG-1050, which is the second binary microlensing event with space-based parallax measurements. The degeneracy in microlens parallax πE led to two sets of solutions, either a ∼ (0.9, 0.35)M⊙ binary at ∼3.5 kpc or a ∼(0.2, 0.07)M⊙ binary at ∼1.1 kpc. We measure the flux blended with the microlensed source by conducting Magellan AO observations, and find that the blending is consistent with the predicted lens flux from the higher-mass solution. From the combination of the AO flux measurement together with previous lensing constraints, it is estimated that the lens system consists of a primary and a secondary at kpc.
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