Astronomers using the UK Infrared Telescope in Hawaii have discovered four pairs of stars that wrapped around each other in less than four hours. Between them is so little space that is the issue of the closing of their crowns.
According to recent data, nearly half of all the luminaries in the galaxy are just such a double star. Scientists have long believed that their orbits are unstable and too small a distance between such paired space objects is simply impossible. Astronomers are confident that star system with an orbital period of five hours previously discovered, are the most closely spaced possible binary stars. However, not so long ago, the researchers found as many as four pairs of stars in which the period of no more than four hours.
The record for the velocity of a pair of stars 19b-3-06008, which consists of two red dwarf. The period of rotation for them is 0.1121 days, ie is less than three hours. Red dwarfs are the most durable stars in the universe and can live for trillions of years. However, in a binary system is a risk of falling stars on one another, which greatly shorten their life cycle. The distance between these stars have not yet been determined, but it is just very small - a few million kilometers.
The data obtained are contrary to the accepted model of the formation of binary stars. The fact that they can theoretically be formed as close as in the case of one material and a second proto "imploded" to each other and could not be no star pair. So get close red dwarfs could only due to loss of angular momentum.
As for the reason for the rapid loss of the detected stellar pairs of angular momentum, then, according to astronomers, there’s the fact that the magnetic field lines of neighboring stars may overlap so that the movement of one of the lines will occur across different lines, and with a fairly rapid loss of kinetic energy. Thus, the interaction of magnetic fields near leads to their stars to spiral closer to very small distances.
While it is unclear what the future holds paired stars. Drops to slow down the extremely close in or the stars will fall on each other by staging a spectacular fireworks display?
According to the materials Sciencemagis.ru