Illustration of a stellar global oscillation shaking the whole star interior and thus carrying information on it. Yellow refers to maximum temperature variations due to oscillations. Credit: Aarhus University/S. FrandsenFrom Cosmos Magazine:
PARIS: French astronomers have measured vibrations from distant stars for the first time, a technical feat that could also help answer questions about climate change caused by solar activity here on Earth.
Using an orbital telescope called CoRoT, launched in December 2006 by the European Space Agency, the researchers analysed oscillations from three stars that result from nuclear fusion which shakes the stellar interior. They report the find today in the U.S. journal Science.
The stars measured are all between 1.2 and 1.4 times more massive than the Sun, and located between 100 and 200 light years away. The study revealed that all three are much hotter than the Sun and have vibrations around 50 per cent more fierce, though still far less than had been predicted.
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