How Common Are Common Envelopes? (Data & Code) v2.0

updated figures to match

v2.0 — Data and Code Release

Associated with the paper:

Broekgaarden et al. (2026), "How Common Are Common Envelopes? Quantifying Their Role in Forming
Gravitational-Wave Sources"

What's included

• Formation channel fractions and intrinsic merger rates (z=0) for BBH, BHNS, and BNS
  binaries from 129+ population-synthesis models across multiple codes (COMPAS, SEVN, POSYDON, MOBSE,
  StarTrack, and others)
• Jupyter notebooks reproducing all figures in the paper (Figures 1–11)
• [Interactive HTML table](https://floorbroekgaarden.github.io/Rates_of_Formation_Channels/interactive_fi
  gures_and_tables/formation_channel_rates_table.html) of compiled rates, channel fractions, and simulation
  parameters
• Simulation specification tables and source data CSVs

Changes since v1

• Extended simulation survey to 129+ models
• Updated observational rate constraints using GWTC-4/5
• Added interactive HTML table with sortable/filterable formation channel data
• Updated and extended figures (Figs. 3–10)
• Added .zenodo.json for automated metadata on future releases

Citation

If you use this repository, please cite the Zenodo record and the associated paper.