Solar calibration of asteroseismology

Details Solar calibration of asteroseismology Solar calibration of asteroseismology

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286..579g&link_type=abstract

In ESA, Seismology of the Sun and Sun-Like Stars p 579-582 (SEE N89-25819 19-92)

Physics

2

Calibrating, Stellar Luminosity, Stellar Oscillations, Stellar Physics, Stellar Evolution, Stellar Mass, Stellar Structure

Scientific paper

The status of asteroseismology is reviewed, and the contribution of solar calibration is described. The first expected result of asteroseismology will consist in the measurement of two parameters, delta v and D0, which in the Tassoul's asymptotic approximation are close to the sound speed integral across the solar radius, and to the sound speed gradient inside the nuclear burning core, respectively. The first depends mostly on the mass and evolves slowly with age, while the second is strongly age dependent through the increase of molecular mass in the stellar core. Theorists have started to built delta v - delta D0 diagrams, as a tool for the the determination of mass and age of stars. For a precise calibration of such a diagram, a precise measurement of those parameters in the case of the Sun was made.

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