Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..407k&link_type=abstract
Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 July
Astronomy and Astrophysics
Astronomy
Scientific paper
Solar-like oscillations are tiny oscillations that are excited stochastically by convection. Due to the low amplitude of the oscillations extreme demands are placed on instrumental stability if one should hope to detect those oscillations. For the last 15 years we have tried to detect solar-like oscillations in a few selected stars with no or limited results. In recent years however success has finally come. We are therefore facing a break-through in the study of solar-like oscillations a situation that potentially will change our view of stellar structure and evolution through the use of the observed frequencies of the oscillations. The frequencies depend on the sound speed inside the star which in turn depends on density temperature gas motion and other properties of the stellar interior. This talk will describe the main results that have been achieved so far discuss some of the details of the asteroseismic analysis and make some comments about the future prospects. Reality may in the future surpass our dreams and as such the study of the tiny oscillations promise to be a key issue for the study of stellar evolution in the coming decades.
Bedding Timothy R.
Kjeldsen Hans
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