International Gemini Observatory/NOIRLab/NSF/AURA/Canada-France-Hawaii Telescope/Coelum
The stars showing detectable helium absorption, which corresponds to increased helium abundance
The stars showing detectable helium absorption (filled circles), which corresponds to increased helium abundance, also have increased light element abundances ([Na/Fe] and [Al/Fe]). Thus, enhanced helium is associated with a second generation of star formation in Omega Centauri.
