Carbon-Based Molecules Seen Just a Billion Years After the Big Bang - by spacewriter
Astronomer Joris Witsok, the lead author of a paper describing the discovery, speculated that the diamond-like grains came from the debris ejected in supernova explosions. “This could also potentially be produced on short timescales by Wolf-Rayet stars or supernova ejecta,” he explained.
These old, superhot stars may be progenitors of some types of supernova explosions. They’d be the perfect cradles for the creation of nano-diamonds and other carbon-based dust. In fact, some models do show that carbon-rich grains come from certain types of Wolf-Rayet stars. Not only that, but those grains can survive when the stars explode as supernovae. The next question is whether or not such stars existed in the early Universe in order to produce the dust JWST observed.
Chemical analysis of the dust provides minute details about its makeup. Certain dust molecules interact with specific types of light. Astronomers use that property to figure out what the dust is made of. That’s what the team led by Witstok did with their JWST observations. “Carbon-rich dust grains can be particularly efficient at absorbing ultraviolet light with a wavelength around 217.
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