How many exoplanets were discovered around spectral types of stars is shown in this diagram.
Preferably exoplanets around G and K stars are searched, so these also represent the largest share in this diagram. Star whose spectral types are not known to flow into the left bar with one of the total number of stars.
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It is interesting that could be detected exoplants around very bright stars (spectral type B). At the other end of the chart to go red dwarf stars (spectral type M) and brown dwarfs over (also spectral type M) in each other.