2025/09/12 by Sebastian Hutschenreuter, Hutschenreuter, S., J. Alves +13
Physics and Astronomy · Social Sciences · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Educational Leadership and Practices #FOS: Physical sciences #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.2509.13607
openalex publication_date 2025/09/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
General information The maps in this record are the posterior mean and standard deviations for the stellar velocity field of Sco-Cen as published in Hutschenreuter et al. (https://arxiv.org/abs/2509.13607) Please note that these files are preliminary and might be updated upon acceptance of the above preprint! The latent samples and computational model will be published here upon acceptance of the manuscript. This will also allow the calculation of power spectrum and noise estimation posterior. Illustrations of the maps can be found at https://shutsch.github.io/scocendata.html. File Description The maps are published in hdf5 format, see https://docs.h5py.org/en/stable/index.html for details. All quantities are expressed in heliocentric Galactic Cartesian coordinates x, y, z on a 70 × 70 ×50 grid with voxel size 33 pc3, anchored at (xo, yo, zo) = (−5, −190, −65) pc. Vector fields will have the shape (3, 70, 70, 50), scalar fields (70, 70, 50). The velocity fields are expressed in km/s the barycentric reference frame, in order to a convert to a Sco-Cen frame subtract the field with (vx,sc, vy,sc, vz,sc) = (−6.2, −20.0, −5.4) km/s. The derivative fields are reference frame independent and in units of 1/Myr. The flow related files contains two hdf5-data sets called mean and std, containing the posterior mean and standard deviation, respectively. Additionally, we publish boolean stellar density based masks, which we use as a proxy for the boundary of Sco-Cen. See the paper for a detailed description on their definition. Summary main field: vfieldmain.h5: Containg the maps of the main velocity field divergencemain.h5: Containg the maps of the main divergence field vorticitymain.h5: Containg the maps of the main vorticity field densitymaskmain: Containing the boolean mask for the main field secondary field: vfieldus.h5: Containg the maps of the secondary velocity field divergenceus.h5: Containg the maps of the secondary divergence field vorticityus.h5: Containg the maps of the secondary vorticity field densitymaskus: Containing the boolean mask for the secondary field