In space, found a population of compact galaxies

15.06.2009


Astronomers have found a population of super-dense compact galaxies at a distance of about 11 billion light-years from Earth. It is reported by New Scientist, and their results, researchers reported at the American Astronomical Society, which is being held in Pasadena, California.

 

The discovery was made using a telescope Keck II, located on the top of an extinct volcano Mauna Kea in Hawaii. Some of the detected galaxies are comparable to the mass of the Milky Way, but the diameter is a tenth of the diameter of our galaxy. Compact galaxies are one of the mysteries of modern astronomy. The fact that researchers are finding a lot of these objects in the early stages of the universe. However, in the later stages they are absent. What happened with the galaxies in the development of the universe, scientists still can not explain. However, they have several hypotheses. According to one of them, galaxies began to merge with each other, becoming more. According to another, the objects themselves have swollen as a result of internal processes. However, both of these hypotheses are contrary to received in 2008 the results of observations in which it was found that the compact galaxies existed even after 3.7 billion years after the Big Bang. This means that on the "swelling" of these objects have less time than previously thought, according to the calculations and it is not enough.

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