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Helium Enhanced Cool Stars

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    Science & Technology
  • Published
    18th Aug, 2020
  • Indian Institute of Astrophysics (IIA) an autonomous institute of DST, have discover He-enhanced cool bright stars among the metal-rich parts of Omega Centauri globular cluster.
  • This is the first time He-abundance has been found in Omega Centauri.
  • Globular clusters are the stellar systems with millions of stars formed from the same gaseous cloud.
  • Omega Centauri is the brightest and the largest globular cluster in our Milky Way Galaxy.
  • Usually, the stars formed will be homogeneous in their chemical composition of elemental abundances.
  • The different stars of Omega Centauri do not show the same metal content, a parameter that indicates its age, but a large range in it.
  • The study provides a very important clue for the origin of the He-enhanced population establishing that these are the second generation of stars formed from the metal-rich and He-enhanced material from the first generation of stars.

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