Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-07-11
Astronomy and Astrophysics
Astrophysics
accepted for publication in ApJ Letters
Scientific paper
10.1086/591667
In helioseismology, there is a well-known offset between observed and computed oscillation frequencies. This offset is known to arise from improper modeling of the near-surface layers of the Sun, and a similar effect must occur for models of other stars. Such an effect impedes progress in asteroseismology, which involves comparing observed oscillation frequencies with those calculated from theoretical models. Here, we use data for the Sun to derive an empirical correction for the near-surface offset, which we then apply three other stars (alpha Cen A, alpha Cen B and beta Hyi). The method appears to give good results, in particular providing an accurate estimate of the mean density of each star.
Bedding Timothy R.
Christensen-Dalsgaard Joergen
Kjeldsen Hans
No associations
LandOfFree
Correcting stellar oscillation frequencies for near-surface effects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Correcting stellar oscillation frequencies for near-surface effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correcting stellar oscillation frequencies for near-surface effects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-575253