Volume 366, Number 1, January IV 2001
|Page(s)||311 - 316|
|Section||Planets and planetary systems|
|Published online||15 January 2001|
Solar model: Element diffusion or metal-enhanced envelope?
Yunnan Observatory, NAOCAS, PO Box 110, Kunming 650011, PR China
J. Y. Yang
Accepted: 4 October 2000
Solar models with moderate enrichment of heavy elements in the convective envelope (CSM) and with element diffusion (DSM) are investigated using updated input physics. It is found that both CSM and DSM can result in adequate depth of the convection zone and appropriate surface helium abundance, and the agreement between the calculated and observed p-mode frequencies are also improved. The sound speed of DSM is better than CSM and the standard solar model (SSM) in the deep interior, which means that element diffusion helps improve the sound speed profile in the solar interior. In the area just below the base of the convection zone, CSM is the best of the three models.
Key words: solar structure / solar evolution / solar oscillations
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.