A strange new type of star covered in the by-product of helium burning

helium-rich subdwarf O stars (sdOs) are hot compact stars in a pre-white dwarf evolutionary state. Their atmospheres are helium-dominated. The situation becomes more puzzling as the new stars have temperatures and radii that indicate they are still burning helium in their cores. This property is usually seen in more evolved stars.

Recently, a team of German astronomers has discovered a…

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News Source: https://www.techexplorist.com/strange-new-type-star-covered-product-helium-burning/44713/

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