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New analysis of M67 cluster helps decode the sound of stars
- Stars vibrate with pressure waves revealing information about their mass, age, and structure through frequencies.
- A study on stars in the M67 cluster led by researchers at UNSW Sydney discovered a plateau in their frequency pattern.
- Pressure waves in stars are generated by convection as gas rises and sinks within them.
- Stars produce a spectrum of sounds due to oscillations at multiple frequencies, observable as changes in brightness.
- M67 cluster was studied for its evolved stars to understand acoustic oscillations using NASA’s Kepler/K2 mission data.
- Large and small frequency separations in oscillation spectrum provide insights into stellar evolution.
- A surprising plateau in small frequency separations was discovered in 27 stars indicating changes in the stellar interior.
- The plateau was linked to the convective envelope's evolution causing disturbances in pressure waves movement.
- This plateau offers a new tool to identify evolutionary stages in red giant stars and improve mass and age estimates.
- The discovery aids in understanding galactic history and improving stellar models accuracy for future evolution predictions.
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