This page mirrors scripts/chabrier2021_data/README.md in the repository, which is the authoritative version.

Chabrier et al. dense H/He EOS tables (not included)

scripts/generate_lte_table.py builds the dense-fluid part of the H/He equation of state table chabrier2021_t13_helm_union_prad_640.table from five tables published by G. Chabrier and collaborators. The authors make the tables publicly available, but they are distributed without a license that permits redistribution, so this repository does not include them. Download them yourself and place them in this directory before you run the generator.

File	Content	Reference
TABLEEOS_2021_TP_Y0275_v1	H/He mixture with H-He interactions, Y = 0.275	Chabrier & Debras (2021)
TABLEEOS_2021_TP_Y0292_v1	H/He mixture with H-He interactions, Y = 0.292	Chabrier & Debras (2021)
TABLEEOS_2021_TP_Y0297_v1	H/He mixture with H-He interactions, Y = 0.297	Chabrier & Debras (2021)
TABLE_H_TP_v1	pure hydrogen	Chabrier, Mazevet & Soubiran (2019)
TABLE_HE_TP_v1	pure helium	Chabrier, Mazevet & Soubiran (2019)

All five are the version v1 (June 2021) tables on the (log T, log P) grid, with 2 <= log10(T / K) <= 8 and -9 <= log10(P / GPa) <= 13. They are contained in the archive DirEOS2021.tar.gz on the authors' web page, which also holds tables that the generator does not use.

How to get them

The script get_eos_table.sh in the top-level directory of the repository does all of the steps below and then builds the EOS table. To do it by hand, run from the repository root:

cd scripts/chabrier2021_data
curl -LO http://perso.ens-lyon.fr/gilles.chabrier/DirEOS/DirEOS2021.tar.gz
tar -xzf DirEOS2021.tar.gz
cp DirEOS2021/TABLEEOS_2021_TP_Y0275_v1 DirEOS2021/TABLEEOS_2021_TP_Y0292_v1 \
   DirEOS2021/TABLEEOS_2021_TP_Y0297_v1 DirEOS2021/TABLE_H_TP_v1 \
   DirEOS2021/TABLE_HE_TP_v1 .
sha256sum -c <<'EOF'
c4995d114affedddf421b57b847ad4872699e9526f32b4b335013ffcbfb0b938  TABLEEOS_2021_TP_Y0275_v1
436fe580aac6e8572159b59322bf7baf6afb43ec91630779239698bbeaf57a7d  TABLEEOS_2021_TP_Y0292_v1
3a07460158c1b7feeea9484a94684148ac94ebc9b6df4b2f194f8024b1aa50bb  TABLEEOS_2021_TP_Y0297_v1
0215333ff5d727e9059dc474ef2b615e3dee62af5a16a2dab037ee181a2ff892  TABLE_H_TP_v1
fae4720798f6189f5d10020a996c264b72d72406be40b15175a0b9799efc932b  TABLE_HE_TP_v1
EOF
cd ../..

The checksums are those of the files used to build the table of the paper. If a check fails, the authors have released a newer version of the tables, and the generated EOS table will differ from the one of the paper.

The same tables are also distributed as a .tar.gz package with Chabrier & Debras (2021) on the journal web site. The authors' README names [email protected] as the contact for requests.

Then build the EOS table:

python3 scripts/generate_lte_table.py chabrier2021_t13_helm_union_prad_640

The generator looks for the five files in this directory by default (scripts/chabrier2021_eos.py).

References

Please cite both papers when you use EOS tables built from these data.

• Chabrier, G., Mazevet, S., & Soubiran, F. 2019, ApJ, 872, 51 (arXiv:1902.01852)
• Chabrier, G., & Debras, F. 2021, ApJ, 917, 4 (arXiv:2107.04434)