Dataset from the paper "The boring history of GAIA BH3 from isolated binary evolution": I - initial conditions & run scripts

This repository contains the initial condition files and the run scripts to reproduce the results in Iorio et al., 2024.

Content

Files XXX.ic

Ascii files containing the initial conditions of 2e7 binary systems. The files do not contain a header, and the columns report (from left to right):

1. Mass of the primary [Msun]
2. Absolute metallicity of the primary 
3. Initial spin (angular velocity over critical angular velocity)
4. Supernova model for the primary
5. Initial age of the star (Myr or special keywords)
6. Mass of the secondary [Msun]
7. Absolute metallicity of the secondary
8. Initial spin (angular velocity over critical angular velocity)
9. Supernova model for the secondary
10. Initial age of the star (Myr or special keywords)
11. Initial semimajor axis [Rsun]
12. Initial Eccentricity 
13. Ending time or condition of the simulation [Myr or special keyword]
14. Output frequency [Myr or special]
15. Random seed

Some columns contains the special placeorder keyword XXX. In this case, the values are undefined and they are set at runtime using the value on the runscripts. For additional information see the SEVN Userguide.

The initial conditions are:

• SEVNIC20M_qmin0005.in, initial conditions used in all the simuations of  Iorio et al., 2024 except for the model fiducial_ICthermal (see Table 1) e partially for the model fiducial2E8 (see below).
• SEVNIC20M_qmin0005_ethermal.in, initial conditions for the simulation set fiducial_ICthermal
• SEVNIC20M_X.in (where X ranges from 1 to 9), initial conditions (split in different chuncks) used for the simulation set fiducial2e8. This set is also complemetned by the SEVNIC20M_qmin0005.in initial conditions. 

Runscripts

The runscripts are contained in the archive runscripts.zip. See the README in the archive for additional information. 

Notes

The code used in Iorio et al., 2024 is SEVN (Iorio et al., 2023) version 2.10.1 (commit a4753f11).