Rare extreme helium star identified by astronomers
(PHYSorg.com Space & Earth)

(Phys.org)-Astronomers have identified another rare example of an extreme helium star. The star, designated GALEX J184559.8-413827 (or J1845-4138 for short), was initially classified as a faint helium-rich `hot subdwarf,` but new spectroscopic observations reveal that this star is more hydrogen-deficient than previously thought. The finding is available in a paper published June 11 on arXiv.org.