Volume 472, Number 2, September III 2007
|Page(s)||571 - 576|
|Section||Stellar structure and evolution|
|Published online||09 July 2007|
The frequency separations of stellar p-modes
Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454003, PR China e-mail: email@example.com
2 National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, PR China
3 Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China
4 Department of Astronomy, Beijing Normal University, Beijing 100875, PR China e-mail: firstname.lastname@example.org
Accepted: 12 June 2007
Aims.The purpose of this work is to investigate the characteristics of a new frequency separation of stellar p-modes.
Methods.Frequency separations are deduced from the asymptotic formula of stellar p-modes. Then, using the theoretical adiabatic frequencies of stellar model, we compute the frequency separations.
Results.A new separation , which is similar to the scaled small separation , is obtained from the asymptotic formula of stellar p-modes. The separations and have the same order. And like the small separation, is mainly sensitive to the conditions in the stellar core. However, with the decrease in the central hydrogen abundance of stars, the separations and deviate more and more from the scaled small separation. This characteristic could be used to extract the information on the central hydrogen abundance of stars.
Key words: star: oscillations / stars: interiors
© ESO, 2007
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.