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May 24, 2024

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EPSILON INDI "Star Zhen" breaks astronomical records and expectations

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International research cooperationThe measurement work was completed by an international team. The tea

International research cooperation

The measurement work was completed by an international team. The team was led by the Institute of Portuguese Astronomy and Space Science. The members also included researchers at the University of Birmingham.The measurement results were published on the Astronomy & Asstrophysics Letters.

These earthquakes are detected by a technology called “astrology”, which measures the oscillation of stars.The research team used the ESPRESSO spectrometer installed on the Southern Astronomical Terrace (ESO) (ESO), which recorded these oscillations by unprecedented accuracy.


Vocal waves (P mode) of different frequencies spread in the inner layer of the star.Image source: Tania Cunha

Technical breakthrough and astronomical influence

The main author, TIAGO CAMPANTE at the Institute of Celestial Physics and Space Sciences at the University of Porto, said: “The extremely high-precision level of these observations is an outstanding technical achievement.The final detection shows that the precise asteroid measuring science can accurately reach cold stars with the surface temperature as low as 4,200 degrees Celsius (about 1,000 degrees Celsius), which effectively opens up a new field of observation of celestial physics. “

The orange dwarf has recently become the focus of finding livable planets and alien life.Professor Bill Chaplin, dean of the School of Physics and Astronomy and a member of the research team, said: “The forecast size of these stars is not matched with the size of the observation, which will affect the planets around them.Successful planets look for technology-so-called Ling Daying method-we can get the size of the planet’s phase to the size of the star; if we do not correctly determine the size of the star, the same asteroid we found will also have the same situation. “

Professor Bill Chaplin, School of Physics and Astronomical, said: “The detection of oscillation will help understand and reduce these differences as much as possible, and improve the theoretical model of the stars.Finding planets around them “.

Future exploration

The detection of EPSILON INDI star shock will provide information for the PLATO mission launched by the European Space Agency (ESA) in 2026, which will detect the shock of more orange dwarf stars.Plato will also look for planets around these stars.Birmingham is responsible for designing and delivery of most of the Plato asteroid shocking pipelines, and its results will be used by tens of thousands of researchers around the world.

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