Wednesday, June 7, 2023

They discover a young star is a unique case in the universe

Astrophysicists from the Universities of Jaén and Huelva have made an extraordinary discovery Young star of type T-Tauri de very high speed, which Contrail is the longest observation ever among runaway stars, which makes this discovery unique in the known universe. These results, obtained after years of optical observation and archival data collection, have been published by researchers from Jain University (UJA). josepe marti ribas why Pedro Luis Luke Escamilla and collaborator of the University of Huelva (UHU) Estrella Sánchez Ayaso, in the journal Astronomy & Astrophysics, the University of Huelva reports in a statement.

The researchers stated that “Such stars are rarely seen., leave alone the one that leaves a clearly visible mark; And even more rare is the one that leaves the longest trail ever seen, and that too a very young star“. Stars form what are known as gas-rich molecular clouds, which can clump together until the nuclear reaction that ignites the star begins.

This is why young stars, including so-called T-tauris, are usually seen all together, close to their place of birth. However, some of them are visible in regions far away from the said clouds and devoid of gas. Their arrival at that location may be due to the fact that they are close to other stars when they are born, so that their mutual gravitational interaction ends up taking one of the sisters away from the nest at high speed. The newly discovered star is of this type and is “the most convincing example of a runaway T-Tauri star found to date.”

It can be possible deep impact on knowledge It exists in how stars form and evolve. But in this case, in addition to this, behind the star is visible a huge tail generated by rotation in a dusty medium at a dizzying speed of 50 kilometers per second. The trail is so long that if it were near the sun, the end would reach a quarter of the distance from the pole star, about 100 light-years, the researchers indicated. Such trails can only be seen in infrared radiation, thanks to dust that heats up as the star passes.

But the dust cools quickly, so the trails behind runaway stars are rarely visible. In the case of the UJT-1, there is a source of heat in the surrounding medium which prevents the dust from cooling and the trail remains visible for a long time. That heat source could be a shock wave from a neighboring supernova, a star that explodes when it dies, spewing its material into the environment. so you can see the tail of UJT-1 and reconstruct the history of its formation over half a million years In the past, that makes it possible to do a kind of space archaeology, and study how the amount of matter ejected by the star has evolved over that time.

Nation World News Desk
Nation World News Desk
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