Rare extreme helium star identified by astronomers

via Principia Scientific International
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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. […]

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via Principia Scientific International http://ift.tt/1kjWLPW

June 21, 2017 at 07:36AM