NASA Hubble discovered the largest of all the currently known population of globular star clusters, containing about 160,000 stars orbiting around the center of Abell 1689 galaxy cluster in the constellation Virgo. An international team of researchers used the camera Advanced Camera for Surveys telescope Hubble for a detailed study detected a population that is characterized by an unprecedented density. Scientists suggest that such a compact location of stars in the star cluster may indicate the presence of a huge amount of dark matter. According to Karla Alamo-Martinez of the Center for Radio Astronomy and Astrophysics, functioning at the National Autonomous University of Mexico, in the course of the research he and his colleagues were able to identify the relationship between the globular clusters and dark matter, that is, as the distance from the center of the galactic star cluster affects amount of dark matter. Karla Alamo-Martinez is the lead author of the research paper to be published in the Astrophysical Journal as early as next Friday. In research he helped a team of experts, led by John Blakeslee of the Dominion Radio Astrophysical Observatory.
Globular star clusters are presented, as a rule, hundreds of thousands of stars are considered to be witnesses of galaxy formation. Approximately 95% of the stars in these clusters were formed about 1-2 billion years after the Big Bang . The study population of globular clusters is important in the sense that they can reveal some details of an early stage of development of the universe, which was characterized by high intensity of star formation, and in which the role played exactly dark matter. On this little-studied component of the Universe astrophysicists know is that it must exist. However, the reality is presented in the dark matter for an astronomer to this day remains a mystery. The number of globular star clusters in the Abell 1689 is about twice the number of populations recorded to date in the course of other research. For example, only in the Milky Way centered about 150 globular clusters. Abell 1689 is considered to be the most distant galaxy clusters studied. It is located at a distance of about 2.25 billion light-years from Earth.
These spacecraft Hubble indicate that most globular clusters are concentrated around the center of the cluster, where the assumption of astronomers has located the bulk of dark matter. Accordingly, the further from the core of Abell 1689, the globular clusters are less common. As summed up John Blakeslee, globular clusters, stars are echoes the most ancient processes of star formation in Abell 1689, and that this research shows – the most intense of these processes took place in the center of the cluster, where presumably contains the main dense concentrations of dark matter