Seismic study of stellar convective cores

Mazumdar, A. ; Antia, H. M. (2001) Seismic study of stellar convective cores Astronomy and Astrophysics, 377 (1). pp. 192-205. ISSN 0004-6361

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It has been shown that a discontinuity in the derivatives of the sound speed at the edge of the convective regions inside a star gives rise to a characteristic oscillatory signal in the frequencies of stellar oscillations. This oscillatory signal has been suggested as a means to study the base of the outer convection zone in low mass stars and possibly the outer edge of the convective core in high mass stars. Using stellar models we show that because of a phenomenon similar to aliasing in a Fourier transform, it may not be possible to use this signal to detect the convective core. Nevertheless, it may be possible to determine the size of convective cores using the frequency separation νn+1,ln,l.

Item Type:Article
Source:Copyright of this article belongs to EDP Sciences.
Keywords:Stars: Interiors; Stars: Oscillations; Stars: Evolution
ID Code:75621
Deposited On:24 Dec 2011 15:08
Last Modified:18 May 2016 19:34

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