论文标题
OGLE-2007-BLG-224L：陆地视差确认
OGLE-2007-BLG-224L: Confirmation of Terrestrial Parallax
论文作者
论文摘要
我们根据Magao成像在微透析事件发生七年后，对OGLE-2007-BLG-224的镜头通量提出了限制。在观察时，镜头应通过292 MAS与微透镜源分开。但是，Magao未检测到新来源。我们对$ h> 20.57 $的镜头通量放置上限。该测量支持Gould等人的结论。 （2009年），此事件中的镜头应该是棕色矮人。这是基于陆地微片状视差效应的预测的首次测试，也是第一个AO确认子赛车/深色微片。
We present limits on the lens flux of OGLE-2007-BLG-224 based on MagAO imaging taken seven years after the microlensing event. At the time of the observations, the lens should have been separated from the microlensing source by 292 mas. However, no new sources are detected with MagAO. We place an upper limit on the lens flux of $H>20.57$. This measurement supports the conclusion of Gould et al. (2009) that the lens in this event should be a brown dwarf. This is the first test of a prediction based on the terrestrial microlens parallax effect and the first AO confirmation of a sub-stellar/dark microlens.
