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04/21/2025 05:20:11 am

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Windy Weather Found in a Star Similar to the Sun

T Tauri Star

Astronomers have found windy weather in a T Tauri Star, an infant version of the Earth's Sun, located 104 million light years away in the constellation Ophiucus.

T Tauri stars are relatively normal, medium sized stars surrounded by raw materials that build rocky and gaseous planets.

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These stars are nearly invisible in optical light but their disks shine in infrared and millimeter-wavelength light, said astronomers.

They are, however, unable to explain why T Tauri stars have disks that glow in infrared light while other stars shine normally.

Colette Salyk, an astronomer from the National Optical Astronomical Observatory, found out that the material in the disk of a T Tauri star usually emits infrared radiation with a predictable energy distribution. Other stars emitted infrared radiation in unexpected ways, she added.

With the help of Atacama Large Millimeter Array, astronomers were able to study the distribution of carbon monoxide around the star.

According to them, carbon monoxide is an excellent tracer of the molecular gas that makes up stars and planet-forming disks.

This conforms to a theory there is gas on the surface of the disk caused by winds present there.

Astronomers found out the multiple star arrangements suggest the reason why gas is ejected from the disk because it's being pulled away by its companion star.

Salyk said they hope the ALMA can tell them if they're seeing winds on the disks or the interaction of the star with its companion star.

To date, astronomers plan to continue their research by targeting other T Tauri stars without companion stars to check if similar observations can be seen.

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