Scientists have discovered a couple of stars in which a small one absorbs a large one

Scientists have discovered a couple of stars in which a small one absorbs a large one

About half of the star systems of the Milky Way are double, where the stars revolve around each other, more specifically around the center of the masses. The Massachusetts Institute of Technology has reported the discovery of a dual system of ZTF J1813+4251, in which one star absorbs the substance of another.

The ZTF J1813+4251 system is located 3,000 light years away from the Earth, and it belongs to the cataclysmic variable class. It is called a pair in which one of the stars is a white dwarf and absorbs its companion. The age of the stars in the system is 8 billion years, and their orbital period is 51 minutes, which is the minimum known value for such a pair. Now the distance between them has been significantly reduced and has become smaller than the distance between the Earth and the Moon.

Scientists claim that a large star has a temperature comparable to that of the sun, and its size is comparable to that of Jupiter. The white dwarf is only 1.5 times larger than the Earth, but has a very dense core with a mass of 56% of the mass of our sun. A small star absorbs hydrogen from the upper layers of its companion, leaving it with an unusually high helium content. Under the influence of gravity forces, a large star also takes an outstretched caple shape, which also explains the variable level of brightness of the double system.

Because of these processes, when the hydrogen is absorbed, the system can produce -- they've previously been associated with an unknown disaster -- but astronomers now have a clearer idea of what's going on.

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