Figure 2. Distribution of Planet Sizes (IMAGE)

Tokyo Institute of Technology

Figure 2. Distribution of Planet Sizes

Caption

Histogram of planet radius for the validated and well-characterized transiting planets around red dwarfs: The number counts for mid-to-late red dwarfs (those with a surface temperature of under 3,500 K) are shown above those for early red dwarfs (those with a surface temperature of around 3,500-4,000 K). The results show a "radius gap", or a dip in the number of stars with a radius between 1.5-2.0 times that of Earth.

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Astronomical Journal

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