Stars and planets “grow up like brothers”



Spectacular images taken by one of the world’s largest radio telescopes show the reversal of the prevailing notion that planets form after their parent stars, an international team of researchers has announced. focus on an area of ​​the constellation of Ophiuchus that contains large amounts of interstellar gas, from which new stars are formed. (comparatively, the Sun is 4.6 billion years old). The newborn star is surrounded by a flat disk of gas and dust, materials from which planets are already forming. As they orbit the star, these “protoplanets” absorb the material in front of them, forming concentric rings in the disk of gas and dust. “The rings in the disk surrounding IRS 63 are so young,” Dominic said. Segura-Cox of the Max Planck Institute for Extraterrestrial Physics in Germany, head of an international study published in the journal Nature. “But now we see that the first stars and the planets are growing and evolving together like brothers,” he said. “Planets formed a short distance from the parent protostar are likely to end badly, as they risk being absorbed by the growing star.” The planets that form farther away will probably have better luck. The researchers calculated that the amount of dust hidden at distances from the star greater than 20 Astronomical Units (AU, Earth-Sun distance) corresponds to half the mass of Jupiter, while the amount of gas may be 100 times greater. And that means there is plenty of material to form planets. According to the researchers, the material required to form the core of a planet corresponds to only 3% of the mass of Jupiter. In fact, as Dr. Segura-Cox points out, the disk surrounding IRS 63 is about the size of the Solar System. while the mass of the first star is only slightly smaller than that of the Sun. In other words, a new “Solar System” could be formed around the first star, which is 470 light-years from Earth. These studies could eventually confirm or refute a newer theory that Jupiter was not always in its current position, but formed much further away from the Sun and later Follow it on Google News and be the first to know all the news See all the latest News from Greece and the World, at



Source link

Leave a Reply

Your email address will not be published. Required fields are marked *