Tuesday , June 22 2021

Astroboffins on the spot big pair swinging together. What? Um, we're talking about record massive binary stars … • Register

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Impression of the artist on a massive young object of a binary system of stars. Image credit: NRAO / AUI / NSF

According to the latest research, astronomers have discovered the closest and largest dual asteroids on Earth to Earth.

A star known as PDS 27 and its companion are two huge plasma balls classified as massive Young Star Objects (MYSOs). They have an estimated combined mass of about 12 times that of the Sun, and are locked at a distance of about 4.5 billion kilometers (2.8 billion miles) from each other, approximately the distance between the Sun and Neptune.

"With the PDS 27 and its companion, we have now discovered the closest, most massive young star objects in binary solutions to date," said Evgeniya Cumpia, a research fellow at the University of Leeds in England, and the first author of the paper to find out the results, published this Week in Astronomy and Astrophysics.

The observation of these types of stars is difficult because they are not very long. Unlike our Sun, which spreads to a beautiful mature age, massive stars live more dangerous. Their huge sizes mean that they should burn much more quickly through abundant quantities of reserves, and their life span is only in the order of several million years compared to the $ 10 billion of the Sun.

"This is a very exciting discovery, the observation and simulation of massive binary films in the early stages of their formation is one of the main struggles of modern astronomy," said Cumpiya.

"There is a shortage of known young massive binary systems in the mapped space. High massive stars have a relatively short lifespan, burn and explode as supernovae in just a few million years, making it hard to notice. This limits our ability to test theories how these stars are formed ".

Well, fortunately, the international team of researchers has found another pair of these types of binary files. PDS 37 and its accompanying star are slightly smaller with a combined mass of 11 solar masses and are separated by a further distance, approximately as far as the Sun is from Pluto: 5.9 billion kilometers or 3.7 billion miles.

Interaction with red giant and neutron star (photo: ESA)

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Both binary systems were found by analyzing the data taken from the European Southern Observatory with a very large telescopic interferometer (VLTI). An instrument known as PIONIER collects the light from four telescopes to exhaust the starry stars in each system. The researchers hope that their discovery will help scientists understand how such massive stars are formed.

"The next big question – which we often avoided because of observational difficulties – is why so many of these massive stars are in binary systems?" Said Renee Odheimer, a lecturer at Leeds University and co-author of the study.

"Astronomers are becoming more and more clear that massive stars are almost never born alone, with at least one brother for a company. But the reasons why this is the case are still quite bleak.

"The massive stars have a significant impact on their cosmic environment," said Stewart. "Their starry winds, the energy and the explosions of the supernova they generate can influence the formation of other stars and galaxies." The evolution and fate of the masses of stars is quite complex, but previous studies have shown that they can largely be influenced by their binary properties. "®

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