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