Resolving Microlens Blends Using Image Subtraction
Resolving Microlens Blends Using Image Subtraction
复制标题
使用图像减法解决微透镜混合问题
DOI：
10.1086/337923
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. An
中科院分区：
文献类型：
--
作者：
A. Gould;J. An
在微透镜事件的表征中，混合光是一个重要的简并源，特别是在二元透镜和高放大倍数事件中。我们展示了如何图像减法技术可以应用于形成一个图像的混合源删除。在许多情况下，应该可以构建具有非常高的信噪比的图像。对这些图像的分析可以帮助区分具有不同混合分数的竞争模型，并且在某些情况下应该允许直接检测透镜。
Blended light is an important source of degeneracy in the characterization of microlensing events, particularly in binary-lens and high-magnification events. We show how the techniques of image subtraction can be applied to form an image of the blend with the source removed. In many cases, it should be possible to construct images with a very high signal-to-noise ratio. Analysis of these images can help distinguish between competing models that have different blend fractions, and in some cases should allow direct detection of the lens.