Seismology will tell scientists about the age of the stars (video)
The group of astrologers used the acoustic sound reels stars to track its evolution over time. The results of the study authors published in the journal Science, and briefly with him can be found, for example, on the website of the Leuven Catholic University in Belgium.
In their observations, scientists have found out the theoretical predictions about the relationship of the nature of the acoustic frequency spectra of shocks with the age of the stars and gained absolute compliance with the theoretical conclusions the results of the research. To achieve the desired result astrologers analyzed vacillation 34 stars over the years, from 10 million years old and weighing from one to 4 Solar masses. The objects of the research were in a nebula, located in the constellation of the Unicorn, at a distance of approximately 2.5 thousand light years from our Solar system.
The shock of the frequency spectrum of a star are a result of pressure exerted by radiation with matter in it. Young and light of stars in the result of such pressure detect smaller frequency instability than older and heavy (which develop faster). Oscillation modes pressure (acoustic oscillations), which are formed inside stars, connected with its internal structure (and, hence, age) and processes (thermonuclear reactions and transfer of energy in the form of drug and radiation)that occur in it. Nature of the instability is guided by the local speed of sound, which is the star to change based on, for example, the distance to the center of the object.
Early star, which is formed in the result of the gravitational compression of the collapse of a cloud of cosmic dust and gas, in particular the turn of own development achieves certain values such characteristics as, for example, temperature, luminosity and mass, which allow her to notice.
For personal research astrologers used 1st canadian orbital telescope MOST, the European space telescope CoRoT and ground-based observatories, such as, for example, the European southern Observatory in Chile.
Scientists have tested the latest effective method to study the evolution of stars and determine their age. Asteroseismological method has a solid theoretical base and approved by the Supervisory data. Scientists intend to apply it in their own research of evolution of stars and galaxies in General.
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