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First-of-its-kind supernova reveals inner workings of a dying star: « Newly discovered supernova is ‘stripped down to the bone’ to reveal heavier elements. »
For the first time, astrophysicists detected a supernova embedded in a wind rich with silicon, sulfur and argon. Observations suggest the massive star lost its outer hydrogen and helium layers long before exploding. Discovery offers direct evidence of the long-theorized inner shell structure of massive stars.<br />
An international team of scientists, led by Northwestern University astrophysicists, has detected a never-before-seen type of exploding star, or supernova, that is rich with silicon, sulfur and argon. This finding offers direct evidence of the long-theorized inner layered structure of stellar giants and provides an unprecedented glimpse inside a massive star’s deep interior — moments before its explosive death. Instead of typical helium, carbon, nitrogen and oxygen — found in other stripped supernovae — the spectrum was dominated by strong signals of silicon, sulfur and argon.
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