11/13/2022 0 Comments Newest alien newsUnderstanding the role of the bursts is important in this context: It can well be imagined that the organic molecules are preserved in comets during epochs where a planet is barren, and that later comet impacts will introduce the molecules to the planet's surface," says Jes Kristian Jørgensen. Comets often have a high content of ice with presence of organic molecules. "Comets are likely to play a key role in creating possibilities for life to evolve. Not only planets but also comets will be in focus: The team hopes to obtain more observational time at ALMA, allowing to investigate the formation of planetary systems. The observed stellar system is still too young for planets to have formed. While the disc will build up again, the bursts may still influence the structure of the later planetary system." "These bursts will tear the gas and dust disc apart. The heat will make the star much brighter than usual," says Rajika L. "The falling material will trigger a significant heating. The two stars encircle each other, and at given intervals their joint gravity will affect the surrounding gas and dust disc in a way which causes huge amounts of material to fall towards the star. Presumably, the cyclic pattern can be explained by the duality of the binary star. The binary star becomes ten to one hundred times brighter, until it returns to its regular state. At some points in time - typically for relatively shorts periods of ten to one hundred years every thousand years - the movement becomes very strong. Notably, the movement of gas and dust does not follow a continuous pattern. Kuruwita, Niels Bohr Institute, second author of the Nature article. The simulations will tell us which physics are at play, and how the stars have evolved up till the snapshot we observe, and their future evolution," explains Postdoc Rajika L. "The observations allow us to zoom in on the stars and study how dust and gas move towards the disc. However, the team has complemented the observations with computer simulations reaching both backwards and forwards in time. The observations can only provide researchers with a snapshot from a point in the evolution of the binary star system. The binary star system, NGC 1333-IRAS2A, is surrounded by a disc consisting of gas and dust. The new discovery has been made based on observations made by the ALMA telescopes in Chile of a young binary star about 1,000 lightyears from Earth. The results from the project, which also has participation of astronomers from Taiwan and USA, are published in the journal Nature. Such results may pinpoint places which would be especially interesting to probe for the existence of life," says Professor Jes Kristian Jørgensen, Niels Bohr Institute, University of Copenhagen, heading the project. This enhances the significance of understanding how planets are formed around different types of stars. "The result is exciting since the search for extraterrestrial life will be equipped with several new, extremely powerful instruments within the coming years. A new result from research at University of Copenhagen indicate that planetary systems are formed in a very different way around binary stars than around single stars such as the Sun. Nearly every second star in that category is a binary star. Since the only known planet with life, the Earth, orbits the Sun, planetary systems around stars of similar size are obvious targets for astronomers trying to locate extraterrestrial life.
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