Seismic estimate of solar heavy element abundances

Basu, S. ; Antia, H. M. (2006) Seismic estimate of solar heavy element abundances Proceedings of SOHO 18/GONG 2006/HELAS I Workshop on Beyond the Spherical Sun . pp. 80-84.

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The recent downward revision of solar photospheric abundances of oxygen and other abundant heavy elements has caused a serious discrepancy between standard solar model and the seismically determined solar structure. In order to obtain an independent estimate of heavy element abundances in the Sun, we use the dimensionless sound-speed derivative in the solar convection zone to determine the heavy element abundance using seismic data. This technique is similar to that successfully used to determine the helium abundance in the solar envelope. We find a heavy element abundance of Z = 0.0175±0.002.

Item Type:Article
Source:Copyright of this article belongs to European Space Agency.
Keywords:Sun: Oscillations; Sun: Abundances; Sun: Interior
ID Code:75689
Deposited On:24 Dec 2011 15:11
Last Modified:18 May 2016 19:38

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