STOCKHOLM News: Sweden's Uppsala University announced a few days ago that researchers and international colleagues at the university have discovered that the abundance of silver in the Sun is 55% higher than previously estimated. The Sun is mainly composed of two elements, hydrogen and helium. Although elements such as carbon, iron, and silver account for a very low proportion of the total mass of the Sun, they can provide important clues for studying the evolution of the Sun and other celestial bodies. In order to determine the abundance of silver in the Sun, the researchers used spectroscopic methods to analyze the characteristic spectral lines of the corresponding elements in the spectrum of sunlight after passing through the Sun's atmosphere. Previous estimates were mainly based on a relatively simplified model of the solar atmosphere. This study analyzed the solar atmospheric dynamics model in more detail and considered the interaction between silver atoms and light and other particles in more detail. New estimates show that the abundance of silver in the Sun is 55% higher than previously estimated. Researchers say that the abundance of silver in the Sun measured by the scientific community in the past was significantly lower than that in some meteorites. The Sun and these meteorites all originated from the same gas and dust clouds about 4.6 billion years ago, and the abundance of silver elements should theoretically be relatively close. The new valuation is closer to the meteorite data and helps explain the long-standing “lack of silver” problem. The researchers said that the next step will be to apply relevant methods to other stars to further understand the formation, distribution and changes of silver elements in the universe. The relevant paper has been published in the European academic journal “Astronomy and Astrophysics”.

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