Scientists were also surprised by the newly discovered star, to any It is found more than a thousand light years from Earth in the constellation of the SwanAs her two faces are completely different.
A star named Janus after the two-faced Roman god One side is made almost entirely of hydrogen and the other is made up almost exclusively of helium. A lone star bears such duality It has not been discovered before – said the astrophysicist from the California Institute of Technology Astronomy Now magazine.
Even my colleagues were amazed, even though this isn’t the first white dwarf they’ve seen
– He said Ilaria Kiazo.
White dwarfs get their name from the fact that they emit bright white light due to their extremely high surface temperature. They are in the final stages of stellar development when It shrinks to roughly the size of Earth, while still having a mass equal to that of the SunSo its density is huge. As a result of the intense gravitational field, heavier elements sink into the core, and lighter ones float up from it. The two-layer atmosphere usually consists of a thin layer of hydrogen on top of a layer of helium. When the star’s temperature drops below 30,000 degrees Celsius, bubbles form in the thick helium layer, and mix with the hydrogen layer, which softens and disappears from view.
Present Strange find Astronomers attribute this to the fact that Janus’ magnetic field may be asymmetric, and that if it were stronger on one side, it might limit the formation of bubbles in the helium layer. They became aware of the unique phenomenon so far as the star produced rapid light changes. revealed that It rotates on its axis every quarter of an hour and a half brighter than the other. Then came the spectral analyzes that showed the two types of composition, which is unprecedented in the case of stars examined so far.
