Monday , April 12 2021

They discover a mysterious star that recovers doubts if it offers "alien megaestructures" NASA | United States Sêr



The astronomers who worked in Atacama telescope in Chile discovered a star whose dark and handsome guy was similar to the star of Tabby, which was believed to have surrounded by an alien megaen structure.

Pre-disclosure to the discovery of the star found, VVV-WIT-07, was found in the arXiv.org portal.

Astronomers pointed out the celestial object while studying the central area of ​​the Llaethog Road, and looking for supernovas and stars that suddenly lighten as they explode. The scientists also had comments on the VVV-WIT-07 star in the period 2010 to 2018.

In these years, the brightness of the star has increased and decreased without an established pattern, with a gross maximum brightness that reached 80%.

This picture shows the theoretical adverse dust cycle that sets KIC 8462852, also known as Star Boyajian or Star Tabby. Credits: NASA / JPL-Caltech

"We do not know what kind of object it is," said astronomer Roberto Saito, from the Federal University of Santa Catarina in Florianópolis, Brazil. "And that's interesting," he added, quoted by Science News.

The scientists Saito collaborates with them confirms that the VVV-WIT-07 might have some form of rubbish by orbiting that it will block its light from time to time. But they said they needed more observations to decide if this is the case for the variations.

The behavior of the strange star is similar to another tablin called Tabby (KIC 8462852), which also showed significant changes in its mild suspension of up to 22%.

This picture shows a star behind a broken comedy. The unusual star KIC 8462852 comments suggest that its unusual light signals are likely to come from dusty comet pieces, which blocked the star light when they were transmitted in 2011 and 2013. Credits: NASA / JPL-Caltech

Among the theories that he tried to explain this strange pattern of avoids, one that suggested that the existence of an extraordinary mega structure turned around the star.

But this idea was eliminated when the 2018 investigation said that the colorful changes in KIC 8462852 due to dust particles that prevent some wavelength of light, and not because of a major object obstruction.

There is another sticky star, J1407, whose behavior is more like VVV-WIT-07. This star is transported from time to time by up to 95%.

It was discovered in 2012 by the team of the astronomer Eric Mamajek, from the University of Rochester in New York. Astronomers believe that J1407 hosts a planet in its orbit with a huge massive system that turns out the star from time to time.

Thirty-seven circles formed by invisible images surround the exoplanet J1407b in this illustrator. Credit: Thirty-seven circles are formed by invisible images surrounding the exoplanet J1407b in this artist. Credit: jpl.nasa.gov

Because VVVV-WIT-07 has been located in the galaxy plane, the path from the Earth to the star is interrupted with dust, which is made It is difficult to distinguish between details such as the distance of the star and even what type of star it is, or if it is a young and diverse star, and if so its light fluids could be in-house. Then servers would not have to impose orbital rings or other strange explanations.

"Everything is on the board right now," said the Bullie Boyajian astronomer of Louisiana State University Boyajian. "We need more data."

Saito and his colleagues are hoping to continue to observe the star with larger telescopes, such as the 8.1-meter Gemini telescope or the Armin Millimeter Array, in Chile.


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