data:models0
Table of Contents
Models (exercise #0)
The table below organises the data used in each exercise. Data consists in packages compresses with .tar.gz or zip, which can be downloaded by clicking on the provided links.
Data
Package | Date | Author | Description | Format | Download |
---|---|---|---|---|---|
wp121130_ex0-smodels | 21/01/2019 | A. Serenelli | stellar interior models | gong, amdl | ( ex0-smodels.tar.gz) |
wp121130_ex0-omodels | 21/01/2019 | ALL | oscillations | - | ( ex0-frequencies.tar.gz) |
Global properties
Model | Mass | [Fe/H] | alpha | ovsh | Nshell | Phase | Notes |
---|---|---|---|---|---|---|---|
0-001 | 1.04 | +0.05 | 1.6 | 0.00 | 3000 | MS | Representative of 16Cyg ~7Gyr (Travis et al. 2015) |
0-002 | 1.04 | +0.05 | 1.6 | 0.00 | 4000 | SG | - |
0-003 | 1.50 | +0.00 | 1.6 | 0.00 | 3000 | MS | Small convective core (around 8% of the stellar mass) |
0-004 | 1.50 | +0.00 | 1.6 | 0.00 | 4000 | TAMS | - |
0-005 | 1.50 | +0.00 | 1.6 | 0.00 | 4000 | SG | - |
Physics
Code | Garstec (A- Wess rev., 2015) | ||||
---|---|---|---|---|---|
Convection | MLT, alpha = 1.801 | ||||
Overshoot | diffusion equation with exponential decay (Herwig type), including geometric limit applied to small convective cores (H_p towards the center makes overshoot regions too large). Proportion factor f = 0.02 (equivalent to 0.2 - 0.25 Hp in tradicional formulation) | ||||
Extra mixing | Under the convective envelope (Vandenberg et al. 2012) as a function of its mass. Free parameters calibration forced to reproduce the solar Li and chemical abundances observed in globular clusters (e.g. Korn et al. en NGC 6397). | ||||
gradT | Temperature gradient in overshoot regions is radiative. | ||||
Wind | 1e-13 Msun / yr to avoid depletion of He and metals (included in extra missing calibration) | ||||
Atmosphere | Eddington T-tau | ||||
Nuclear rates | Adelberger et al. 2011, which includes de “low” value of LUNA's N14+p | ||||
Screening | Weak (Salpeter)/intermediate (Graboske et al. 1973, subgiants) | ||||
EOS | FreeEOS de Irwin | ||||
Opacities | OPAL + Ferguson 2005 for low temperatures | ||||
mDiffusion | For all chemical elements | ||||
rLevitation | No | ||||
Relevant constants | |||||
G | 6.67232e-8 (c.g.s.) |
data/models0.txt · Last modified: 2022/12/22 14:33 by 127.0.0.1