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The Chromaticity of Microlensing (Surface Imaging of Stars)

Dimitar D. Sasselov
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Abstract

Gravitational microlensing is not achromatic when the star being microlensed is resolved by the lens. We show how narrow-band photometry and moderate- to high-resolution spectroscopy can be used to reconstruct the stellar surface intensity distribution of a microlensed star. Such microlens imaging can provide a unique opportunity to study the surfaces of normal red giants where Doppler imaging is not applicable due to slow rotation.}

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Dimitar D. Sasselov. 1997-02-20. The Chromaticity of Microlensing (Surface Imaging of Stars). https://arxiv.org/abs/astro-ph/9702180

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