The Drifting Star - The Planet-hosting Star Iota Horologii
April 18, 2008
Using HARPS on ESO's 3.6-m telescope at La Silla, astronomers were able to study in great detail the star Iota Horologii, known to harbour a giant planet, and make a very precise portrait of it: its temperature is 6150 K, its mass is 1.25 times that of the Sun, and its age is 625 million years. Moreover, the star is found to be more metal-rich than the Sun by about 50%. This means the star must have drifted from the Hyades cluster where it formed. Credit: Digital Sky Survey/VirGO.
Topics: Human Interest, Entertainment Culture, Horologium constellation, Stars, Astronomy, Iota Horologii, High Accuracy Radial Velocity Planet Searcher, Hyades, Hyades cluster, Planetary systems, Taurus constellation, Extrasolar planets, La Silla Observatory, European Southern Observatory, Technology Internet