Current status of Asteroseismology

Details Current status of Asteroseismology Current status of Asteroseismology

2000-11-19

arxiv.org/abs/astro-ph/0011354v1

Astronomy and Astrophysics

Astrophysics

6 pages. Invited talk at the SOHO 10/GONG 2000 Workshop on "Helio- and Asteroseismology at the Dawn of the Millenium", Santa C

Scientific paper

Oscillation frequencies are the most accurate properties one can measure for a star, potentially allowing detailed tests of stellar models and evolution theories. We briefly review asteroseismology for two classes of stars. In delta Scuti variables, the main problems are the identification of the observed modes and the theoretical treatment of rotation. In solar-like stars the main difficulty is the tiny amplitudes, but credible detections are now being made. These confirm that stars are oscillating at the approximately the expected levels, but suggest that amplitudes scale as 1/g rather than L/M. We also stress the importance of multi-site campaigns. Several space missions will be launched over the coming years, promising an exciting future for asteroseismology.

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