Spots on the Sun vs spots on extreme horizontal branch stars (artist's impression)

Spots on extreme horizontal branch stars (right) appear to be quite different from the dark sunspots on our own Sun (left), but both are caused by magnetic fields. The spots on these hot, extreme stars are brighter and hotter than the surrounding stellar surface, unlike on the Sun where we see spots as dark stains on the solar surface that are cooler than their surroundings. The spots on extreme horizontal branch stars are also significantly larger than sunspots, covering up to a quarter of the star’s surface. While sunspots vary in size, a typical size is around an Earth-size planet, 3000 smaller than a giant spot on an extreme horizontal branch star.

Të drejtat:

ESO/L. Calçada, INAF-Padua/S. Zaggia

Rreth fotografisë

Id:eso2009b
Tipi:Punim artistik
Data e Publikimit:Qer 1, 2020, 17:00 CEST
Publikime të ngjashme:eso2009
Përmasat:3840 x 2160 px

Rreth objektit

Tipi:Unspecified : Galaxy : Grouping : Cluster
Kategori:Stars

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