Convective core size determination using asteroseismic data

Details Convective core size determination using asteroseismic data Convective core size determination using asteroseismic data

2010-04-16

arxiv.org/abs/1004.2928v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

HELAS IV International Conference Proceedings, to be published in Astronomische Nachrichten

Scientific paper

As it is long known, the presence of a convective region creates a discontinuity in the chemical profile of a star, which in turn translates into a sharp variation of the adiabatic sound speed. This variation produces an oscillatory behavior of the pulsation frequencies, to which low degree p-modes are sensitive. We investigate the possibility of detecting the signature related to the presence of a convective core in the frequency spectrum of low-mass stars by means of suitable frequency combinations (such as separations and ratios)

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