Germany Astronomer Nicole Reindl Find ‘Strange’ New Type Of Star Covered In Helium Burning Ashes

An unusual pair of stars can form a rare type of stellar commission when one helium star eats another one made of carbon and oxygen.

Researchers have described two strange stars in our galaxy as “freaks”. These two stars are much hotter than the similar stars and are thought to be wrapped in a layer of carbon and oxygen. German scientist Nicole Reindl and her colleagues have discovered two new stars named PG1654+322 and PG1528+025, using the Large Binocular Telescope in Arizona. When researchers analyzed these two stars, they found some unexpected features in these two stars.

  • A star of this size whose masses are about half that of the Sun, usually relatively cool but this star is much hotter than others of their size.
  • Stars of this size and temperature are usually made almost entirely of Helium, with small marks of heavy material. but both stars have surface compositions that are about 20 per cent carbon and 20 per cent oxygen – the ashes left behind from burning helium.

Nicole Reindl says “This is a very exotic type of star which has never been seen before, and we have two of them, There have been other stars that have these high temperatures, but they have different surface compositions.”

Similar stars are formed when a white dwarf star slowly swallows another white dwarf star. A second group of researchers led by Marcelo M. Miller Bertolami at the Institute of Astrophysics La Plata in Argentina came up with a variation on this process that could be crated by a new species. They explain, the large solid pasrt of the two white dwarfs must be made of Helium and the smaller one of most of the Carbon- Oxygen. Then, when the helium star eats the other, the resulting object will have carbon and oxygen on its surface. If this happens then it is expected to be a rare occurrence. Reindl says usually, helium white dwarfs are smaller than carbon-oxygen ones. She also says to confirm this hypothesis about how these strange stars are born, astronomers will need to look for those progenitor systems.

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