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Earth-like planets may form in binary star systems - VIDEO PDF Print E-mail
Thursday, 02 April 2015 21:00

LUKe Skywalker's home planet of the "star Wars" is a desert world called "Tatooine", where at Sunset seen just two "Suns" - as a planet orbiting a binary star.

However, until now orbiting binary stars such scientists were only discovered lifeless gas giants, and many researchers believe that rocky planets are not able to be formed in such stellar systems.

However, now a new mathematical calculations demonstrate that the planet Earth-solid surface, such as Tatuin likely exist and can be widely distributed in the Universe.

"Such Sunsets on Tatooine, can be observed on many planets of the Universe" - sums up the results of his research in astrophysics Ben Bromley of the University of Utah and Scott Kenyon of the Smithsonian Astrophysical Observatory, both of the United States.

"The main conclusion from our work is that the outside of a small area, which lies near the double star, planet formation can occur, and almost in the same way as in the case of a single star," the authors write in their paper. "We believe that the planets in the planetary systems of binary stars should meet no less than planetary systems of single stars."

When forming planets from dust and gas disk in the planetary system of a star or stellar pair first formed the so-called "planetesimals," which later merged with each other and become larger, eventually forming planet. The nature of the interaction of these planetesimals dependent probability of their further transformation into a planet. In the systems of single stars planetesimals movement occurs in circular orbits, but because of their collisions are "soft", which contributes to their unification. The motion of the planetesimals from planetary systems of double stars are on orbits distorted by gravity alternately one or the other star systems, but because the collisions between planetesimals are those more likely to break up into separate parts, which prevents merging them into a single planet.

In the new study, the authors showed that the planetesimals in the planetary systems of binary stars do not move in circular, as previously thought, but in oval orbits, and it allows planetesimals such systems avoid many disastrous collisions, which in turn increases the probability of formation of these eventually the planet, and, as the authors of the publication, as Earth-like planets Tatooine and gas giant.


НАЖМИТЕ ЗДЕСЬ ДЛЯ ПРОСМОТРА ВСЕГО СПИСКА НОВОСТЕЙ О НЕОБЫЧНЫХ ЯВЛЕНИЯХ>>>

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