Strange star wreckage?Low metal content?New discovery reveals the mysterious veil of the third type of star

Picture Note: A red superstar who is experiencing a supernova explosion

Astronomers discovered an unusual star who believed that it was the fossil or wreckage of the earliest generation of stars in the universe.

The star called AS0039 is located in the sculptor dwarf, which is about 290,000 light years from the solar system. Unlike other planets that are measured, this star wreckage has a very low -concentration metal content, especially the iron content. Scientists believe that this discovery just proves that the wreckage is the earliest generation of stars in the universe.

The primitive mother star of AS0039 is about 20 solar quality, and its supernova explosion during destruction is 10 to 100 times that of the ordinary supernova explosion. This discovery will reveal new information about the first star in the universe, and these stars have never been observed directly or indirectly so far. The co -author of the study and the astronomer of the University of Cambridge in the UK said in the "Life Science" magazine: The chemical composition of AS0039 is so unusual, so that we can use this to speculate the nature of the first type of star, especially their, especially their. Star quality. "

The earliest generation of stars

Although all the stars are a hot air balloon composed of plasma gases, relying on the central element nuclear fusion energy, they have a great difference in color and shape. Three groups.

The first type of star -the sun and observable universe, there are high metal content, especially iron, rich in higher elements such as calcium and magnesium. The second category of stars -similar to AS0039, there are small quantities in the universe. These low metal content stars only contain trace heavy elements. The third type of star does not contain metal elements and zero -weight elements. Although it has not yet been observed, scientists said that the stars that were born in the universe were the third category of stars.

Caption: The third category of stars in the early universe

In the process of nuclear aggregation, the hydrogen atomic gathering inside the star becomes a nucleus, released huge energy. Most stars have grown to about 1.4 solar quality. Their hydrogen fuel is slowly exhausted. For white dwarfs.

However, after the high -quality star consumes the hydrogen nucleus quickly, it will turn the 氦 atomic nucleus into carbon, and the carbon atomic nucleus will become iron. This is the most heaviest element that the star can create. The stars will become too dense, collapse under their own gravity, and a supernova explosion. This will not only throw the elements created by the stars into the surrounding space, but also the energy released by the energy.

The new star was born in the nebula background of the early stars. They absorbed the metal and heavy elements generated by the early star supernova explosion. Therefore, all the stars we now observe are the first and second categories of stars, which are in the third category of stars. The nebula was incubated in the wreckage.

Having said that, the third type of star is composed of pure hydrogen elements, and it is also the first element produced by the Big Bang. The star metal is zero and is the earliest type of star in the universe. Because there are no other stars, the supernova explosion supply elements, these stars also lack heavy metal elements.

Descendants of Super Navigation

When scientists first discovered AS0039, they were also surprised by its extremely low metal abundance. It is currently the lowest metal abundance in the river system that we know, the lowest carbon content, and the unusual ratio of the heavier element. For example, the content of magnesium and calcium is extremely low, and various findings indicate that AS0039 is the wreckage of the third type of star.

Picture Note: Sculptor dwarf galaxy

Computer simulation results show that the third type of star that bred AS0039 is likely to be destroyed in the severe supernova explosion. It is much larger than the stars we are observed now, so it is not surprising that the ultra -new star explosion occurs with its quality.

Researchers hope that this discovery can allow astronomers to position more second categories of stars, thereby revealing the size and spatial distribution of the third category of stars, and their role in promoting the evolution of the early universe.

Irving said: "The discovery of AS0039 stars helps us understand the nature of the third category of stars and point out the direction for future detection. This is essential for the study of how the universe evolves into the current appearance."

By: Harry Baker

Fy: gxmm

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