Scientists ‍Capture Convection Motion of Giant Bubble on Star’s Surface

Astronomers have made a groundbreaking discovery, capturing in detail the convection motion ‍of a ‍giant bubble on the surface of a star for the first time. These hot ‍bubbles, each 75 times larger than the⁢ Sun, bubble on the surface of​ the star.

The European Southern Observatory ⁤(ESO) ⁤revealed in⁢ a press release that the star in the constellation⁤ of Doradus is a red giant called R Doradus, located approximately 180 light-years from Earth.

High-Resolution Imaging with ALMA

Astronomers at the observatory utilized the ‌Atacama Large Millimeter/submillimeter Array (ALMA) in Chile to photograph R Doradus. The high-resolution image⁢ showcases ​a massive feature​ and hot bubbles, up to 75 times the ​size of the Sun,⁤ forming on the star’s surface‌ and sinking into ⁢the star ⁢faster‍ than expected.

Unprecedented Detail in Convection

Wouter Vlemmings, professor of astronomy and plasma physics at Chalmers University of Technology in Sweden, who led the research,‌ stated: “This is the first time that the actual stellar emergence has been ​presented in this way. The surface⁤ of the bubble is unlike anything we’ve seen before.”

“We never ‌expected that‍ the​ quality of the data would be so high that we could see so much detail in the convection on the surface ‌of the star,” he added.

Energy Generation ⁤and ‍Convection

Stars⁤ generate⁤ energy in their⁣ cores through nuclear fusion,‍ which is then transferred to the surface through massive‌ hot bubbles. These bubbles cool⁢ and sink,⁢ spreading heavy elements throughout ‌the star and creating stellar winds that ‌carry these elements into the ‌universe to form new stars and planets.

A New Understanding of Stellar Evolution

Astronomers have never followed the ​convective motion of stars in ⁣detail before, with‌ the exception of the Sun. With ‌ALMA, researchers can ⁤now obtain high-resolution images of R Doradus’ surface, providing valuable insights into⁣ the star’s ‌behavior.

R Doradus, ⁤with a ⁣diameter approximately 350 times that of the Sun, is an ‍ideal observation target due to its large ​size and relatively ⁤close distance from⁢ Earth. Its ⁤mass, similar to that of the Sun, suggests​ that it may be similar to​ what the Sun will⁢ become⁣ in 5 billion years.

Implications​ for ⁣Understanding the Sun’s Future

According to Vlemmings, current observations ​of R Doradus can help scientists understand how a star like the Sun behaves when it becomes‍ a‍ red ‍giant. This‍ knowledge can ‍provide valuable insights into the Sun’s ⁢future evolution.

The ​research was published in the journal Nature ⁢on September 11.