Resolving Microlens Blends Using Image Subtraction

Details Resolving Microlens Blends Using Image Subtraction Resolving Microlens Blends Using Image Subtraction

2001-08-17

arxiv.org/abs/astro-ph/0108296v2

Astrophys.J. 565 (2002) 1381-1385

Astronomy and Astrophysics

Astrophysics

title changed, accepted version (including one figure), to appear in the Astrophysical Journal (Feb, 2002)

Scientific paper

10.1086/337923

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 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.

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