A German team of astronomers from the Universities of Tübingen and Potsdam led by Professor Klaus
In the new study, the researchers used stunning spectra from the Large Binocular Telescope in Arizona, USA, and the LAMOST Multipurpose Fiber Optic Telescope.Recall that this is the largest spectroscope at the moment, located at the Xinglong observation station in Hebei province of China, not far fromThe goal is to study the temperature of stars, the gravity on their surfaces, and the content of elements.
While normal stars have surfaces composed of hydrogen and helium, the stars discovered by Prof. Werner and his colleagues are different.Their surfaces are covered with carbon and oxygen, helium burning ash (He).As the authors of the study note, this is a very exotic composition for a star.
At the same time, the temperature and radius of new starsindicate that helium is still burning in their cores. This discovery has baffled scientists. “We are used to the fact that stars with such a surface composition have already finished burning helium in their cores and are on their way to becoming white dwarfs. But the new objects pose a serious challenge to our understanding of stellar evolution,” concludes Professor Klaus Werner from the University of Tübingen, lead author of the paper.
Read more
There is another “planet” inside the Earth: how it saved nascent life
Nuclear fusion no longer needs millions of degrees: how the new method works
New study refutes light energy transfer theory