Seismic Tests of Accretion in Central Stars of Planetary Systems

Details Seismic Tests of Accretion in Central Stars of Planetary Systems Seismic Tests of Accretion in Central Stars of Planetary Systems

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..321..339b&link_type=abstract

Extrasolar Planets: Today and Tomorrow, ASP Conference Proceedings, Vol. 321, held 30 June - 4 July 2003, Institut D'Astrophysiq

Astronomy and Astrophysics

Astrophysics

Scientific paper

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 asteroseismology. We calibrate two stellar models, one with accretion and one with high initial metallicity, in order to obtain the same external parameters for both of them. We then compare their internal structures and their oscillation frequencies.

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