James Webb Space Telescope captures the end of planet formation

How long does it take for planets to form from swirling disks of gas and dust around a star? New research from the University of Arizona allows scientists to discover how our own solar system formed I got a better idea about it. Neon signatures have been discovered in many other objects, but it wasn’t until they were first discovered in 2007 by LPL Professor Ilaria Pascucci on NASA’s Spitzer Space Telescope, the predecessor to JWST, that they were discovered in low-mass planet-forming disks. It was not known that it had come. , were discovered and soon identified as indicators of disk winds. These early discoveries transformed research efforts focused on understanding gas propagation from circumstellar disks. Pascucci is the principal investigator on the recent observational project and co-author of the paper published here. “The discovery of spatially resolved neon emissions and the first detection of doubly ionized argon using the James Webb Space Telescope could be the next step in changing our understanding of how gas is removed from planet-forming disks.” “There’s a gender,” Pascucci said. “These discoveries will help us better understand the history and influence of our solar system.” Furthermore, the research group also discovered that T Cha’s inner disk evolves on a very short time scale of several decades. They found that the spectrum observed by JWST was different from the previous spectrum discovered by Spitzer. According to LPL second-year graduate student Chengyan Xie, who is leading this ongoing research, the discrepancy is due to the fact that a small asymmetric disk inside T Cha formed part of its surface in just 17 years after its birth. This may be explained by this. The amount of mass lost between two observations. “Together with other studies, this suggests that the T-Cha disk is at the end of its evolution,” Xie said. “In our lifetimes, we may see an entire dust cloud spread across T Cha’s inner disk.” Co-authors of the paper include Uma Gorty of the SETI Institute, Richard Alexander of the University of Leicester, Jane Morrison and Andrus Gaspard of the Steward Observatory at the University of Arizona, Cathy Clark of the University of Cambridge, and Imperial College.・Includes Julia Balabio and Dingxiang from London. Mr. Deng of the Lunar and Planetary Research Institute.

source: http://dx.doi.org/10.3847/1538-3881/ad22e1