Wide Field Planetary Camera

In addition to vampires, there are also "seek": these blue stars deserters taken away a lot from their stellar companions, faced with its neighbors, as if they are located in the heart of stellar crowding. A team of astronomers used data from the Hubble Space Telescope (Hubble Space Telescope), to examine the percentage of blue stars deserters in the cluster Messier 30, which consists of several hundred thousand stars, located at distance of 28.000 light-years from Earth. Blue stars deserters known since the early 1950's, however, how they formed, still astrophysical mystery. It turned out that a small fraction of the many stars cluster Messier 30, which was formed about 13 billion years ago, much younger than the other stars. See NYC Marathon for more details and insights. 'It feels like a collective picture of slum nursing home you can see several children and are wondering: "I wonder how they there?" – Says Alison Seals (Alison Sills), Associate Professor McMaster University. 'In a nutshell, it seems we have found that for stars there are two sources of youth. " Previously it was assumed that the less massive star in binary star system behaves as a 'vampire' was evacuated just formed hydrogen from its more massive companion star, which allows less massive stars warm up, grow into a blue and hotter star. The Metropolitan Museum of Art insists that this is the case. But a new study shows that some blue stars deserters reached rejuvenation is not a result of this process, and as a result of a semblance of 'Space lift' due cosmic collisions.

These stellar collisions are almost head-on collisions in which the stars actually merge, combining their nuclear fuel and maintaining nuclear fusion. and merged stars, double stars, tend to have a mass of almost twice the usual mass of individual stars in the cluster. 'The observations are quite consistent with our models show that the blue Star deserters formed as a result of collisions, have several other properties than stars deserters formed as a result of "vampirism". This is direct evidence that there are two script formation of blue stars, deserters, and both scenarios are developed in a cluster at a time ', – says Seals (Sills), who worked as part of an international team that made the discovery. Using data obtained through Wide Field Planetary Camera 2 (WFPC2), installed aboard the Hubble, which is now temporarily closed, the astronomers found that such unusual 'wandering' stars, unlike ordinary stars, the more concentrated part in the central region of cluster Central regions of globular clusters of high-density areas are overcrowded, in which the interaction between the stars is almost inevitable. The researchers suggest that one or two billion years ago, Messier 30 cluster (Messier 30) has undergone a major "core collapse", which led to the ejection of stars in the central region of the cluster, promoting a rapid increase in the density of stars. This event significantly increased the number of collisions among stars and favored the formation of one of the families of blue stars deserters. On the other hand, increasing the stellar "compaction" by the collapse of the nucleus has also contributed to the disturbance binary systems, contributing to the phenomenon of "vampirism" and, accordingly, the formation of another family of blue stars deserters.

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