AAS Journals
Published May 18, 2026 | Version 1.0
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Data and posteriors for "Spin-Orbit Geometry of AU Mic b and c from Back-to-Back Transits Observed Contemporaneously with Magellan PFS, LCOGT, and CHEOPS"

Authors/Creators

  • 1. Department of Astronomy, Tsinghua University
  • 2. Chinese Academy of Sciences South America Center for Astronomy (CASSACA), National Astronomical Observatories
  • 3. ELTE Gothard Astrophysical Observatory
  • 4. Obserwatorium Astronomiczne Niedźwiady
  • 5. Instituto de Física y Astronomía, Universidad de Valparaíso
  • 6. Earth and Planets Laboratory, Carnegie Institution for Science
  • 7. Department of Astronomy, Stockholm University
  • 8. Earth and Planets Laboratory, Carnegie Institution for Scienc
  • 9. Dipartimento di Fisica, Università degli Studi di Torino
  • 10. Sub-department of Astrophysics, Department of Physics, University of Oxford
  • 11. Observatoire astronomique de l'Université de Genève
  • 12. Nanjing Institute of Astronomical Optics \& Technology, Chinese Academy of Sciences
  • 13. National Astronomical Observatories, Chinese Academy of Sciences
  • 14. State Key Laboratory of Public Big Data and Guizhou Radio Astronomical Observatory, Guizhou University
  • 15. Center for Space and Habitability, University of Bern
  • 16. Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences
  • 17. INAF, Osservatorio Astrofisico di Catania
  • 18. The Observatories of the Carnegie Institution for Science
  • 19. Institute for Astronomy, University of Hawai'i
  • 20. Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto
  • 21. Department of Mathematics, Madhyamgram High School (H.S.)
  • 22. Astrophysics Group, Lennard Jones Building, Keele University
  • 23. Physikalisches Institut, Universität Bern
  • 24. Leiden Observatory, University of Leiden
  • 25. School of Astronomy and Space Science, Nanjing University
  • 26. Department of Physics, University of Warwick

Description

The data for the paper "Spin-Orbit Geometry of AU Mic b and c from Back-to-Back Transits Observed Contemporaneously with Magellan PFS, LCOGT, and CHEOPS". This dataset includes the PFS overall RVs, PFS RVs for each chunk, time series of the emission fluxes of the Ca II H&K lines and the $\rm H_\alpha$ line from PFS spectra, CHEOPS light curves, LCOGT light curves for the transit of AU Mic c, LCOGT long-term stellar variability monitoring, and Einstein Probe (EP) X-ray time series.

In the "PFS" folder, "HD197481_PFS.vels" records the PFS overall RVs. "hd197481_kludge.dat" contains PFS RVs for each chunk, with the key of "SVEL" in the subset of "vdarr". This file can be read using scipy.io.readsav in Python. "t_BJD_PFS.txt" records the time of each RV in BJD_TDB, which is slightly different from the local time recorded in "HD197481_PFS.vels".

In the CHEOPS folder, the file "CH_PR140071_TG002207_TU2024-08-24_Raw.dat" contains four columns: BJD_TDB, Instrumental Flux, Error of Instrumental Flux, and roll angle of the telescope. The file "CH_PR140071_TG002207_TU2024-08-24_remove-outliers.txt" contains the light curve after outlier rejection based on the roll angle. The fourth column notes the flares identified visually.

The "transit_posterior" and "RM_posterior" folders contain the .csv files of the posteriors from the transit and RM model fits, recording the median values and 1$\sigma$ errors for each parameter.

Files

CHEOPS.zip

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