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astro-ph2003
Seismic tests of accretion in central stars of planetary systems
Michael Bazot, Sylvie Vauclair
Central stars of extra-solar planetary systems are metal-rich. Planet accretion or initial surmetallicity can explain this observationnal fact. These scenarios can be tested with a…
astro-ph2003
Element stratification in main sequence stars and its effect on stellar oscillations
Sylvie Vauclair
The element settling due to the combined effects of gravity, thermal gradient, radiative acceleration and concentration gradient may lead to important abundance variations inside t…