PIB Corner

Mystery of Extreme Helium Stars Solved

  • A study by the Indian Institute of Astrophysics (IIA) detected the presence of singly ionised fluorine for the first time in the atmospheres of hot Extreme Helium Stars(EHe).
  • The origin and evolution of these Hydrogen deficient objects have been shrouded in mystery. Their severe chemical peculiarities challenge the theory of well-accepted stellar evolution as the observed chemical composition of these stars do not match with that predicted for low mass evolved stars.
  • Detection of fluorine in hot extreme Helium Stars solves their evolution mystery.
  • An extreme helium star or EHe is a low-mass supergiant that is almost devoid ....
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