Wielen dip

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A feature of the luminosity function of stars. Instead of rising steadily towards fainter absolute magnitudes, the number of stars increases little between absolute magnitudes 6 and 9. This feature may provide a clue to the formation of stars of different masses, but its full significance is not yet understood. It is named after its discoverer, the German astronomer Roland Wielen (1938– ).

Subjects: Astronomy and Astrophysics.

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