Silent Star surprises astronomers with “music” from your interior – science
From WM Keck Observatory in Hawaii (United States), Scientists State -Off -ART Device, Keck Planet Finder (KPF) Identify wavy oscillations at HD Star 219134.
Like musical instruments, Astronomers resonate the stars with the right tools “hearing” natural frequency encies.
“The vibrations of a star are like its unique song”The Spanish Private News Agency Europa Press Yagwang Li said in a statement that the Europa Press was quoted today, said Hawaii University (IFA )’s Institute of Astronomy. “After hearing these oscillations, we can determine the mass, size and age of a star”.
So far, the “Star Songs” is mainly recorded from warm stars than Sun, Using NASA territorial telescopes such as Kepler and Tess.
But not HD oscillations 219134Cold and more orange star, just 21 light years away,Too subtle to be found Through the variations of brightness analyzed with those telescops.
Watch the video
Four nights in a row, the team used KPF Collect more than 2,000 Ultra -Pripician measurements of Star SpeedCapture their vibrations in action.
In “the first astrosim reduction of age and the radius of the Cold Star using KPF”, Scientists have determined the age of 219134 in 10.2 billion years, which is twice as much as the sun’s age“Star is a measure that has important implications to understand aging”.
They also found it This star appears to be smaller than that is indicated by measurements other than the asteroid.
According to the study, HD 219134 has at least five planets, two of which have rocky worlds, including land -like compositionsScientists have allowed to improve the size and densities of these planets because of the most accurate measurement of the volume of the star.
