Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-08-05
Baltic Astron. 12 (2003) 247
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, to appear in proceedings of the 6th Whole Earth Telescope workshop
Scientific paper
A recent re-analysis of Whole Earth Telescope observations of GD 358 obtained in 1990 suggests that asteroseismology of additional DBV white dwarfs can lead to independent constraints on the important, but poorly determined, ^{12}C(alpha,gamma)^{16}O nuclear reaction rate. Data exist for several other DBV white dwarfs, but relatively few modes are detected and there is often no multiplet structure to aid in the identification of the spherical harmonic indices (l,m). I use a new grid of one million DBV models covering a broad range of masses, temperatures, and surface helium layer masses to investigate the consequences of assuming m=0 for global model-fitting. I find that when the spherical degree is known and the rotation period is of order 1 day, the model-fitting procedure applied to modes with unknown m-values will still correctly identify the_families_ of possible solutions, and has a high probability of identifying the same globally optimal solution found when the m-value is known.
No associations
LandOfFree
The Consequences of assuming m=0 for Global Model-fitting 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 The Consequences of assuming m=0 for Global Model-fitting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Consequences of assuming m=0 for Global Model-fitting will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-250675