Home > Progress in Space > First two-dimensional map of an exoplanet

First two-dimensional map of an exoplanet

Astronomers around Carl Majeau, Seattle, managed to get a two-dimensional image of an exoplanet. It’s an intensity map that has been calculated from measurements of its brightness. The technique they used is called eclipse mapping. In short: if a celestial body is passing behind another one, it is possible to extract information about its surface temperature. The white color marks a hot spot and one can clearly recognize its day side.

Molleweide projection of the 2D infrared map of HD189733b. Source: Original paper

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Categories: Progress in Space
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