Post Mass Transfer Catalog

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.

Git repository link: binary-observations/post_mt_catalog

Data

Download the catalog in JSON format: Download JSON Download CSV

Data Structure

The main catalog is a JSON array of system entries. Each entry is an object containing the following fields, with numerical quantities stored as [err-, value, err+] triplets:

System Name, RA, Dec, 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": [1e-05, 102.3727, 1e-05],
  "Dec": [1e-05, 3.69171, 1e-05],
  "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.

Interactive Plots

The interactive plots are generated using the Plotly library. You can find the code for the plots in the plots/ directory.

Try clicking the legend to toggle different classes on/off. Have fun exploring the data below!

Catalog description paper

The current version of the paper describing the catalog data and results is available on ArXiv and ads:

ArXiv ADS

Suggest missing systems

Do you think a post-mass transfer system is missing from the catalog? Double check if your system already exists in the catalog (by name/ID and by position). If it is not in the catalog, please submit the missing-system proposal. Thanks for contributing!

Open missing-system workflow

Contact

For questions, feedback, or collaboration ideas, please contact lieke.vanson@ru.nl.