Planetary system early universe

Planetary system from early universe ‘discovered’
London, Mar 28, 2012, PTI :
Astronomers in Europe have discovered an “ancient planetary system” which they claim is likely to be a survivor from one of the earliest cosmiceras, 13 billion years ago.
A team, led by Max Planck Institute for Astronomy in Germany, says the “planetary system” consists of the star HIP 11952 and two planets, which have orbital periods of 290 and seven days, respectively.
The astronomers say the system promises to shed light on planet formation in the early universe – under conditions quite different from those of later planetary systems, such as our own. As part of a survey targeting especially metal-poor stars, they identified two giant planets around a star known by its catalogue number as HIP 11952, a star in constellation Cetus at a distance of about 375 lightyears from the earth.
By themselves, these planets, HIP 11952b and HIP 11952c, are not unusual. What is unusual is the fact that they orbit such an extremely metal-poor and in particular, such a very old star, the astronomers say.
First example
Veronica Roccatagliata of University Observatory Munich, said: “In 2010 we found the first example of such a metal-poor system, HIP 13044. Backthen, we thought it might be a unique case; now, it seems as if there might be more planets around metal-poor stars than expected.”
HIP 13044 became famous as the “exo-planet from another galaxy” – the star is very likely part of a so-called stellar stream, the remnant of another galaxy swallowed by our own billions of years ago. Compared to other exo-planetary systems, HIP 11952 is not only one that is extremely metal-poor, but, at an estimated age of 12.8 billion years, alsoone of the oldest systems known so far.
“This is an archaeological find in our own backyard,” added adds Johny Setiawan of the Max Planck Institute for Astronomy, who led the study of HIP 11952, said in a release.
“These planets probably formed when our Galaxy itself was still a baby,” he added.