Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-10-11
Astronomy and Astrophysics
Astrophysics
8 pages, 5 figures
Scientific paper
10.1088/1009-9271/7/2/08
Based on the work of OPAL (Iglesias & Rogers 1996) and Alexander & Ferguson (1994), we construct a series of opacity tables for various metallicities Z=0, 0.00001, 0.00003, 0.0001, 0.0003, 0.001, 0.004, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.08 and 0.1. These tables can be easily used in Eggleton's stellar evolution code in place of the old tables without changing the code. The OPAL tables are used for ${\log}_{10}(T/{\rm K})> 3.95$ and Alexander's for ${\log}_{10}(T/{\rm K})< 3.95$. At ${\rm log}_{10}(T/{\rm K})=3.95$, the two groups' data fit well for all hydrogen mass fractions. Conductive opacities are included by reciprocal addition according to the formulae of Yakovlev & Urpin (1980). For different metallicities $1M_\odot$ models are constructed with the new opacity tables. Comparison of 1 and $5M\odot$ models constructed with the older OPAL tables (Iglesias & Rogers 1992) shows that the new opacities have most effect in the late stages of evolution, the extension of the blue loop during helium burning for intermediate-mass and massive stars.
Chen Xuefei
Tout Christopher A.
No associations
LandOfFree
Implementation of New OPAL Tables in Eggleton's Stellar Evolution Code 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 Implementation of New OPAL Tables in Eggleton's Stellar Evolution Code, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Implementation of New OPAL Tables in Eggleton's Stellar Evolution Code will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-578133