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Surface Chemistry Shows Which Massive Stars Have Gained Mass from Binary Companions

August 25, 2026
Surface Chemistry Shows Which Massive Stars Have Gained Mass from Binary Companions
By Evan Gough (https://ift.tt/lKUjvoy)

This artist's illustration shows a blue star gaining mass from its red giant companion. Mass transfer is common in massive stars, most of which are in binary relationships. A pair of researchers have developed a way to identify stars that have gained mass, even if the transfer happened a long time ago. Image Credit: NASA/ESA, A. Feild (STScI))

Most stars, including massive ones, are in binary pairs. Astronomers think that about 70% of them have gained mass from their companions, but there's been no way to determine which ones have done so. Now, researchers have found a way.



August 26, 2026 at 01:09AM
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