Post Mass Transfer Review

About

This project aims to provide a comprehensive catalog and analysis of post-mass transfer binary systems, including their key properties and observational data. The data is structured for easy analysis and reproducibility, to support the quest for understanding binary interactions and transfer.

If you use this catalog in your research, please cite the accompanying paper.

@ARTICLE{2026arXiv260531290V,
       author = {{van Son}, Lieke A.~C. and {Yamaguchi}, Natsuko and {Nagarajan}, Pranav and {Shenar}, Tomer and {Sen}, Koushik and {Laroche}, Alexander and {Leiner}, Emily M. and {Sana}, Hugues and {Pols}, Onno R.},
        title = "{Ongoing and Post-Mass-Transfer Binaries: A Living Catalog and Unified Review of Binary Mass Transfer Products}",
      journal = {arXiv e-prints},
     keywords = {Solar and Stellar Astrophysics, High Energy Astrophysical Phenomena},
         year = 2026,
        month = may,
          eid = {arXiv:2605.31290},
        pages = {arXiv:2605.31290},
archivePrefix = {arXiv},
       eprint = {2605.31290},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026arXiv260531290V},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

As well as the Zenodo entry for the catalog data: 10.5281/zenodo.20441988.

@dataset{vanson_2026_postmt_zenodo,
  author       = {van Son, Lieke A. C. and Yamaguchi, Natsuko and Nagarajan, Pranav and Shenar, Tomer and Sen, Koushik and Laroche, Alexander and Leiner,Emily M. and Sana, Hugues and Pols, Onno R.},
  title        = {Ongoing and Post-Mass-Transfer Binaries: A Living Catalog and Unified Review of Binary Mass Transfer Products},
  year         = 2026,
  month        = May,
  publisher    = {Zenodo},
  version      = {1.0},
  doi          = {10.5281/zenodo.20441988},
  url          = {https://doi.org/10.5281/zenodo.20441988}
}

Git repository link: GitHub logo binary-observations/post_mt_catalog

Data

Download the catalog in JSON format: Download JSON Download CSV

Load catalog from GitHub (fetch & render) Page size: System class: evol_type_1: evol_type_2: obs_type_1: obs_type_2:

Download Selected CSV Download Selected JSON

Data Structure

The main catalog is a JSON array of system entries. Each entry is an object containing the following fields. Measured quantities are stored as [err-, value, err+] triplets, except the coordinates: RA and Dec are plain scalars in degrees (ICRS), and pos_err_mas gives the 1σ on-sky positional uncertainty in milliarcseconds (null if unknown):

System Name, RA, Dec, pos_err_mas, Period, Eccentricity, M1, M1_sin3i, M2, M2_sin3i, Mass Function, evol_type_1, evol_type_2, obs_type_1, obs_type_2, system_class, quality_flags, Reference, Simbad, Notes

Example entry:

{
  "System Name": "HD 49641",
  "RA": 102.3727,
  "Dec": 3.69171,
  "pos_err_mas": 0.036,
  "Period": [null, 1785.0, null],
  "Eccentricity": [null, 0.07, null],
  "M1": [0.8, 2.7, 1.2],
  "M1_sin3i": [null, null, null],
  "M2": [null, 0.91, null],
  "M2_sin3i": [null, null, null],
  "Mass Function": [null, 0.003, null],
  "evol_type_1": "RGB",
  "evol_type_2": "WD",
  "obs_type_1": "barium star",
  "obs_type_2": "white dwarf",
  "system_class": "Chemically Peculiar",
  "quality_flags": ["assumed_M2"],
  "Reference": ["2019A&A...626A.127J"],
  "Simbad": "https://simbad.cds.unistra.fr/simbad/sim-coo?Coord=102.3727%203.69171&...",
  "Notes": "Ba class: s; WD mass follows from assumed Q value; ..."
}

Missing values are represented as null in JSON. The quality_flags and Reference fields are arrays (sometimes empty); the remaining categorical fields (evol_type_*, obs_type_*, system_class) are plain strings or null.

Post Mass Transfer Catalog

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Data

Data Structure

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Catalog description paper

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