The Armagh Robotic Telescope (ART) is the youngest, and most advanced, telescope housed at the Armagh Observatory and Planetarium (AOP). It has been 10 years since first light was achieved, and we would like to take this opportunity to talk to the man behind the telescope. Professor Simon Jeffery has Read more…
Want to learn more about what you can see with only a pair of binoculars? AOP’s own Prof. Simon Jeffery explains how to get the most out of a pair of binoculars, and also issues you a challenge! A popular caricature of an astronomer shows an elderly gentleman with a Read more…
In a new paper, Simon Jeffery reports the discovery of standing waves on two small hot stars similar to the pattern of jet streams seen in the Earth’s atmosphere.
Lying somewhere between young main-sequence stars and old white dwarfs, hot subdwarfs are blue stars with about half the mass, a tenth the diameter and ten times the brightness of the Sun.
September 2018 will see over 50 astronomers from around the world gather at the Armagh Observatory and Planetarium to discuss the latest news about hydrogen-deficient stars. These stars have lost nearly all the hydrogen from which they were made, to leave only nuclear ash. Astronomers want to learn how these rare and short-lived remnants formed, and what drives their spectacular changes in brightness.
Recent observations of the helium star HD144941 have been obtained from space. Armagh astronomers Professor Simon Jeffery and Dr Gavin Ramsay have discovered that they show a light curve best explained by darker and lighter patches on the star’s surface coming into view as the star rotates with a period Read more…
Star Wars, the very name brings up images of childhoods spent in front of a TV or cinema screen, absorbing up stories of a galaxy far, far away. For many, it was the thing to ignite their passion for storytelling, and for others it was the thing that ignited their Read more…
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…