Art show newly discovered large planets in retrograde orbit around its parent star
Vidulini
Normal situation is that the planets move around stars in the same direction as the rotation of their parent stars. But as always there are exceptions that prove the rule.
Astronomers gathered in a consortium of several universities of Great Britain using the system WASP (Wide Area Search for Planets) located in the province of Sutherland in South Africa have recently discovered a giant gas planet (WASP 17b) twice higher than our Jupiter, which rotates around its parent star in a direction opposite of its rotation. So called. retrograde motion is quite rare in the universe and is the first planet in another star that is observed Such a motion.
So far it does not know what is causing such a motion of this gas giant, but the working assumption is that at the time of formation of this planetary system occurred one or more mega-collision of celestial bodies, which was enough to turn the planet starts high izuženom "wrong" elliptical orbit around its star. This case is certainly not a lone exception, but will now certainly be an example to help astronomers in better understanding and modeling the formation and development of planetary systems in general.
Otherwise, the planet itself is very interesting. After a first analysis determined the exception of his size, and composition. And although most of the dual contains only half Jupiter's mass, and it can be vividly displayed as the planet of polystyrene. This information is important to astronomers because the size and weight of individual detected planets of other stars substantially differ from the theoretical and computational models. But "paper tiger" are now becoming exposed and fit in with our current knowledge and explanations of planetary systems throughout the universe.
The appearance of the WASP robotic system in the South South Africa (photo by Neven Udovicic AUV during the expedition in South Africa - 2005. Year.)
WASP-17b is the seventeenth consecutive planets discovered by the WASP network. There are two WASP-Observatory. North WASP is located in the Canary Islands and southern WASP in South Africa at South African Astronomical Observatory (SAAO). In our research environment and the planets of other stars is a very successful deal with the Hungarians (CTA system) in our country research extrasolarnih planets are made using the EXO system at NEXT Vidulini Observatory.
Marino Tumpić
ILLUSTRATIONS:
WASP-17b - Art show newly discovered large planets in retrograde orbit around its parent star
WASP-South - The appearance of the WASP robotic system in the South South Africa (photo by Neven Udovicic AUV during the expedition in South Africa - 2005. year.)
