Science, Space and Technology News 2024
This is an artist’s impression of a young star surrounded by a disk of gas and dust. An international team of astronomers has used NASA’s James Webb Space Telescope to study the disk around a young and very low-mass star known as ISO-ChaI 147. The results reveal the richest hydrocarbon chemistry seen to date in a protoplanetary disk.
“Webb has better sensitivity and spectral resolution than previous infrared space telescopes,” explained lead author Aditya Arabhavi of the University of Groningen in the Netherlands. “These observations are not possible from Earth, because the emissions from the disk are blocked by our atmosphere.” The team indicates that these results have large implications for the chemistry of the inner disk and the planets that might form there. Since Webb revealed the gas in the disk is so rich in carbon, there is likely little carbon left in the solid materials that planets would form from. As a result, the planets that might form there may ultimately be carbon-poor.
“It’s incredible that we can detect and quantify the amount of molecules that we know well on Earth, such as benzene, in an object that is more than 600 light-years away,” added team member Agnés Perrin of Centre National de la Recherche Scientifique in France.Next, the science team intends to expand their study to a larger sample of such disks around very low-mass stars to develop their understanding of how common or exotic such carbon-rich terrestrial planet-forming regions are.
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