Stars
Discovery of the first new extreme helium star for 40 years
In a paper entitled ‘GALEX J184559.8−413827: a new extreme helium star identified using SALT’, Armagh astronomer Simon Jeffery reports the first new extreme helium star to be discovered in nearly 40 years. Extreme helium stars represent a small group of low-mass supergiant stars. They have spectral types equivalent to A Read more…