We don't know what the first stars in the Universe were like.
But a new line of evidence traced in images from the James Webb Space Telescope seems to agree with a recent idea that is gaining traction: that not long after the appearance of the first stars – if not among them – were fusion-powered balls of heat and fury that"Today, thanks to the data collected by the James-Webb Space Telescope, we believe we have found a first clue of the presence of these extraordinary stars,"The first piece of this puzzle is a type of star group called a...
But there's something really peculiar about these older globular clusters. They exhibit chemical abundance ratios that vary from star to star and are: an enrichment of helium, nitrogen, and sodium, and a relative depletion of carbon and oxygen. Charbonnel and her colleague Mark Gieles, previously at the University of Surrey but now at the University of Barcelona, in Spain, thenthat it was possible the stellar wind emitted by these stars"polluted" the interstellar medium of globular clusters with these elements. Meanwhile, ongoing collisions with smaller stars replenished the star's mass.
"Globular clusters are between 10 and 13 billion years old, whereas the maximum lifespan of superstars is two million years,"."They therefore disappeared very early from the clusters that are currently observable. Only indirect traces remain."
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