Published May 20, 2026 | Version v1
Dataset Open

Aerosols and hydrocarbons in the atmosphere of a white dwarf planet — Additional Materials

Authors/Creators

  • 1. ROR icon University of St Andrews
  • 2. EDMO icon University of Michigan
  • 3. ROR icon Northwestern University
  • 4. ROR icon Cornell University
  • 5. ROR icon Johns Hopkins University Applied Physics Laboratory
  • 6. ROR icon Johns Hopkins University
  • 7. EDMO icon National Aeronautics and Space Administration, Goddard Space Flight Center
  • 8. ROR icon University of Victoria
  • 9. ROR icon University of Arizona
  • 10. ROR icon Space Telescope Science Institute
  • 11. ROR icon Ames Research Center
  • 12. ROR icon Massachusetts Institute of Technology
  • 13. ROR icon Jet Propulsion Laboratory

Description

Additional material for 'Aerosols and hydrocarbons in the atmosphere of a white dwarf planet' by MacDonald et al., (2026).

This repository contains four data products:

  1. White Dwarf Spectra — JWST observed host spectrum of WD 1856 and the best-fitting model.
  2. Transmission spectra — Planetary transmission spectra of WD 1856b from two data reduction codes (FIREFLy and Juniper) observed by JWST's NIRSpec PRISM.
  3. Retrieval Outputs — Statistical samples from the POSEIDON atmospheric retrieval code for the FIREFLy and Juniper transmission spectra.
  4. Retrieval Code — Python file for reproduction of the POSEIDON retrieval results.

For any additional data requests or questions, please contact: Ryan.MacDonald@st-andrews.ac.uk

Files

WD1856b_JWST_PRISM.zip

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