2023-09-12 06:00:07
A star the size of Neptune but denser than steel has been discovered by an international team of astronomers. This exceptional density could be the result of massive planetary collisions. Impact simulation.
Credit: Jingyao Dou
The planet TOI-1853b presents a masse almost twice that of any other known planet of similar size. Her density high suggests a predominantly rocky composition. Luca NapoleonielloUniversité by Rome Tor Vergata et de l’University of Bristol led the study published in the journal Nature. According to the researchers, planetary impacts would have eliminated part of theatmosphere and theeauleaving a large quantity of roche.
Dr. Phil Carter, research associate at the University of Bristol, explained that these types of energy impacts are known events even in our solar system. Their study modeled giant impacts capable of removing atmosphere and water from an initially larger planet, resulting in the extreme density measured for TOI-1853b.
Jingyao Dou, postdoctoral student and co-author, highlighted the surprising aspect of this planet. Normally, such a quantity of rock would result in a gas giant like Jupiter. TOI-1853b demonstrates that energetic collisions can create a high-density rocky planet.
Dr. Zoë Leinhardt, associate professor and co-author, concluded that further research is needed to improve the hardware models underlying their simulations.
The discovery of this extreme planet offers new insights into the formation and evolution of planetary systems.
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