A group of astrophysicists from the University of Birmingham in the UK, managed to record the sounds of some of the oldest stars in the Milky Way, according to results of a study released on Monday by the Royal Astronomical Society.
The team said it detected the resonant acoustic oscillations in M4, one of the oldest star known accumulations of the Milky Way, with an antique calculated in 13 billion years. Thanks to data from the Kepler mission / K2 NASA (space agency of the United States), initiated in 2014, experts studied the resonant oscillations of stars for what used to asteroseismology
Said technical studies the periodic oscillations of the surfaces of stars, which are objects fluids, which vibrate with certain natural periods. These oscillations create tiny changes in brightness and pulses, which are caused by the sound recorded in the stars. Measuring the tones of this “star music” you can determine the mass and age of a star. This discovery opens the door to the use of asteroseismology to study the recent history of our galaxy. “Just as archaeologists can reveal the past digging in the earth, we can use the sound of the interior of stars to perform galactic archeology”, compared the teacher Bill Chaplin.
The director of the study, Andrea Miglio, the School of Physics and Astronomy at the University of Birmingham, confirmed the enthusiasm of the staff to be “able to listen to some of the stellar relics of the universe,” according to a statement from the institution. The stars studied are “really living fossils dating from the time that formed our galaxy and hopefully we can now reveal the secrets of how spiral galaxies like ours were formed and evolved,” added Miglio.
Another of the study’s authors, Guy Davies said that this achievement has provided proof that the “asteroseismology can give the precise ages of older stars in the galaxy.”