Space & Science

Scientists discover ‘first of its kind’ triple star system

Scientists have discovered a special, massive system of triple stars unlike any they’ve seen before.

Why is this important: By learning more about these types of star systemsastronomers are able to piece together a better idea of ​​how stars and planets form in the universe.

What they found: The system consists of two stars orbiting one another in a binary and the third orbiting the binary, according to a study published at the end of June in the Royal Astronomical Society Monthly Notices.

  • The two stars in the combined binary are 12 times larger than the Sun, and the third star has 16 times the mass of the Sun.
  • “As far as we know, this is the first of its kind ever detected,” said Alejandro Vigna-Gómez, one of the study’s authors, in a statement.
  • “We know of many tertiary star systems (three-star systems), but they are generally much less massive. The massive stars in this triplet are very close together – it’s a compact system.”

The big picture: The scientists behind the discovery believe that this system likely formed as two sets of binaries orbiting each other.

  • One of the stars in the outer binary then merged with its companion, leaving a massive star orbiting the other binary.

Go further: What happens when a black hole eats a star


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