Wednesday , October 20 2021

Disc fragments binary star & strange pair & # 39; he is born


The astronomers using the Atacama Large Millimeter / submillimeter Array (ALMA) have found that two young stars of the same protoplanet double drive can have twins, it comes from the same cloud-shaped parenting cloud. Beyond that, however, they are amazing in the toilet.

The main and main star of the system, less than 11,000 light-years of Earth, is really colossal, 40 times larger than Sun. Another star, that is, recently discovered by ALMA over the central star's disk, is a mass of about eight (1/80) mass.

They suggest a different size that stands out following two very different paths. The massive star took on a traditional character when it fell from the "core" of a compact gas to gravity. When he traveled less on the road, at least he traveled to the stars, a portion of the "dismal" remote drive accumulated mass masses, a process that could have more of a gas giant's birth.

"Astronomers have known for a long time massive star masses like one or more stars in a coordinate system, but how they got the subject of conviction," said Crystal Brogan, an astronomer with Radio National Astronomy Observatory (NRAO) in Charlottesville, Virginia, and author of the research. "Together with ALMA, we now prove that fragments of star masses and gases and dusts generate fragments during the first stages that make up a secondary sequence."

The main object, known as MM 1, rotates a gas and dust drive identifying a young massive star earlier. The ALMA MM1a protoplanetary disk was recently detected by the harsh protostar assistant MM 1b. The group thinks that this is one of the first examples of a fragmented disk that has been detected around a horrible young star.

"This ALMA observation opens up new questions, such as a side-by-side star that also has a record? & # 39; and" How fast is a second-star star? "Amazing thing about ALMA We still do not use his full capability in this field, which is why we will be able to respond to these new questions one day, "said Todd Hunter, with the NRAO in Charlottesville.

The star gels and dust in the ice space. When these clouds collapse under gravity, they begin to rotate faster, forming a disk around them.

"In a small star mass like our Sun, it's in the form of planetary discs," said John Ilee, head of research at the University of England's Leeds University. "In this case, the star we watched and the album are very massive, apart from being the components of the album, we're seeing another star star."

The millimeter wavelength emitted by means of dust, by observing the subtle changes in light frequency and light emitting the gas, have been able to calculate mass MM 1 and MM 1b.

They work on Astrophysical Journal Letters.

"There are several older and massive stars found with close friends," added Ilee. "But binary stars often have the same exactitude, and it is likely that they are the twenty-first generation. It's very common to find a young binary mass system from 80 to 1 and a very different process of two types of objects."

The improved MM 1b training process takes place in the outer regions of cold and mass disks. These "Gravitationally Instable" discs can not be kept apart from the gravity of their gravity, dividing one or more parts.

The researchers have indicated that the young MM 1b star could be found recently on the disk drive, which could have the potential to complete the plan, but it must be fast.

"As huge as MM 1 lives less than a million years before the supernova breaks into powerful, and therefore MM 1b may have a potential future for creating the planet's own system, it will not be long," concluded Ile.

Research Report: "TG11.92-0.61 MM1: A Piece of Keplerian Disc Near Proto-O Star Pro", J. Ilee, 2018, December 14, Astrophysicist's Letter

Related links

National Radio Astronomy Observatory

Stellar Chemistry, Universe and within it

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Double problems: A white dwarf leads to astronomers

Huntsville AL (SPX) Dec 4, 2018

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