Galaxy data pack (Vanyx universe engine)
========================================

Pack: galaxies-085e0096a133-v1. Built by universe/tools/build-galaxies.py from pinned originals; manifest.json lists every source URL,
retrieval time (UTC), SHA-256 and byte size, the conventions, column units, licence status per asset and caveats.

This pack redistributes factual measurements compiled by the providers below. It is not endorsed by any of them,
and no data provider is responsible for errors introduced here.

Cosmicflows-4 (Tully et al. 2023), tables 2-4 via CDS VizieR J/ApJ/944/94
  Publisher: American Astronomical Society (ApJ); distributed by CDS Strasbourg (VizieR)
  Licence: CC BY 4.0: the licence of the article (version of record) whose machine-readable tables these are, per its Crossref record (licence-evidence/crossref-cf4.json). CDS VizieR rules of usage: "The data retrieved with VizieR are free of usage in a scientific context"; "The commercial usage of the data is subject to rules depending of the origin".
  Licence/terms URL: https://creativecommons.org/licenses/by/4.0/
  Licence status: open
  Used in: local-55f6bbca9cc7fc1e.vxc, groups-7c73ebe649f27e76.vxc, distances-1-a88c3a0c319df4bc.vxc, distances-2-66ae203fc23b899b.vxc, distances-3-efb658e71df374e2.vxc, distances-4-9d793ef7ca77708c.vxc, distances-5-99b04c1f98740577.vxc, redshift-1-e17c45d891bf45d5.vxc, redshift-2-48db34a9d17a280a.vxc, redshift-3-cfb9fd5415999673.vxc
  Cite: Tully, R. B., Kourkchi, E., Courtois, H. M. et al. 2023, ApJ, 944, 94 (2023ApJ...944...94T), doi:10.3847/1538-4357/ac94d8
  Cite: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier); Ochsenbein, F., Bauer, P. & Marcout, J. 2000, A&AS, 143, 23

Local Volume Database v1.1.1 (comb_all.csv)
  Publisher: A. B. Pace and contributors (github.com/apace7/local_volume_database)
  Licence: CC0 1.0 Universal (LICENSE file at the release tag)
  Licence/terms URL: https://creativecommons.org/publicdomain/zero/1.0/
  Licence status: open
  Used in: local-55f6bbca9cc7fc1e.vxc, distances-1-a88c3a0c319df4bc.vxc
  Cite: Pace, A. B. 2025, The Open Journal of Astrophysics, 8, 142 (2025OJAp....8E.142P), doi:10.33232/001c.144859
  Cite: This work has made use of the Local Volume Database (https://github.com/apace7/local_volume_database)
  Cite: Input references of individual distances are kept per galaxy (distanceReference).

2MASS All-Sky Extended Source Catalog (fp_xsc) via the NASA/IPAC Infrared Science Archive TAP service
  Publisher: University of Massachusetts and IPAC/Caltech, funded by NASA and NSF; served by IRSA
  Licence: No use restriction is stated; the 2MASS standard acknowledgement and the IRSA acknowledgement are requested (2MASS FAQ; IRSA "Acknowledging IRSA"). 2MASS gallery images are stated to be in the public domain.
  Licence/terms URL: https://irsa.ipac.caltech.edu/ack.html
  Licence status: open
  Used in: local-55f6bbca9cc7fc1e.vxc, local-ungc-9bdbb1022ad31a1b.vxc, distances-1-a88c3a0c319df4bc.vxc, distances-2-66ae203fc23b899b.vxc, distances-3-efb658e71df374e2.vxc, distances-4-9d793ef7ca77708c.vxc, distances-5-99b04c1f98740577.vxc, redshift-1-e17c45d891bf45d5.vxc, redshift-2-48db34a9d17a280a.vxc, redshift-3-cfb9fd5415999673.vxc
  Cite: Skrutskie, M. F. et al. 2006, AJ, 131, 1163 (2006AJ....131.1163S)
  Cite: Jarrett, T. H. et al. 2000, AJ, 119, 2498 (2000AJ....119.2498J)
  Cite: This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
  Cite: This research has made use of the NASA/IPAC Infrared Science Archive, which is funded by the National Aeronautics and Space Administration and operated by the California Institute of Technology.

2MASS Redshift Survey (Huchra et al. 2012), table 3 via CDS VizieR J/ApJS/199/26
  Publisher: American Astronomical Society (ApJS); distributed by CDS Strasbourg (VizieR)
  Licence: Not stated: the article (2012) carries no open licence in its Crossref record (AAS/IOP copyright). CDS VizieR rules of usage: "The data retrieved with VizieR are free of usage in a scientific context"; "The commercial usage of the data is subject to rules depending of the origin". Public redistribution basis unconfirmed.
  Licence/terms URL: https://cds.unistra.fr/vizier-org/licences_vizier.html
  Licence status: unconfirmed
  Used in: local-ungc-9bdbb1022ad31a1b.vxc, redshift-1-e17c45d891bf45d5.vxc, redshift-2-48db34a9d17a280a.vxc, redshift-3-cfb9fd5415999673.vxc, enrich-local-8f632d368a446bc5.vxc, enrich-distances-9ea5a151510f236d.vxc
  Cite: Huchra, J. P., Macri, L. M., Masters, K. L. et al. 2012, ApJS, 199, 26 (2012ApJS..199...26H)
  Cite: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier); Ochsenbein, F., Bauer, P. & Marcout, J. 2000, A&AS, 143, 23

Galaxy groups: a 2MASS catalog (Tully 2015), table 5 via CDS VizieR J/AJ/149/171
  Publisher: American Astronomical Society (AJ); distributed by CDS Strasbourg (VizieR)
  Licence: Not stated: AAS/IOP copyright per the Crossref record. CDS VizieR rules of usage: "The data retrieved with VizieR are free of usage in a scientific context"; "The commercial usage of the data is subject to rules depending of the origin". Used for PGC identifiers and group membership of 2MRS galaxies.
  Licence/terms URL: https://cds.unistra.fr/vizier-org/licences_vizier.html
  Licence status: unconfirmed
  Used in: local-ungc-9bdbb1022ad31a1b.vxc, redshift-1-e17c45d891bf45d5.vxc, redshift-2-48db34a9d17a280a.vxc, redshift-3-cfb9fd5415999673.vxc, enrich-local-8f632d368a446bc5.vxc, enrich-distances-9ea5a151510f236d.vxc
  Cite: Tully, R. B. 2015, AJ, 149, 171 (2015AJ....149..171T)
  Cite: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier); Ochsenbein, F., Bauer, P. & Marcout, J. 2000, A&AS, 143, 23

Galaxy groups within 3500 km/s (Kourkchi & Tully 2017), table 3 via CDS VizieR J/ApJ/843/16
  Publisher: American Astronomical Society (ApJ); distributed by CDS Strasbourg (VizieR)
  Licence: Not stated: AAS/IOP copyright per the Crossref record. CDS VizieR rules of usage: "The data retrieved with VizieR are free of usage in a scientific context"; "The commercial usage of the data is subject to rules depending of the origin". Used for common galaxy identifiers and group membership.
  Licence/terms URL: https://cds.unistra.fr/vizier-org/licences_vizier.html
  Licence status: unconfirmed
  Used in: local-ungc-9bdbb1022ad31a1b.vxc, redshift-1-e17c45d891bf45d5.vxc, enrich-local-8f632d368a446bc5.vxc, enrich-distances-9ea5a151510f236d.vxc
  Cite: Kourkchi, E. & Tully, R. B. 2017, ApJ, 843, 16 (2017ApJ...843...16K)
  Cite: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier); Ochsenbein, F., Bauer, P. & Marcout, J. 2000, A&AS, 143, 23

Updated Nearby Galaxy Catalog (Karachentsev et al. 2013), tables 1, 2, 6 via CDS VizieR J/AJ/145/101
  Publisher: American Astronomical Society (AJ); distributed by CDS Strasbourg (VizieR)
  Licence: Not stated: AAS/IOP copyright per the Crossref record. CDS VizieR rules of usage: "The data retrieved with VizieR are free of usage in a scientific context"; "The commercial usage of the data is subject to rules depending of the origin".
  Licence/terms URL: https://cds.unistra.fr/vizier-org/licences_vizier.html
  Licence status: unconfirmed
  Used in: local-ungc-9bdbb1022ad31a1b.vxc, enrich-local-8f632d368a446bc5.vxc, enrich-distances-9ea5a151510f236d.vxc
  Cite: Karachentsev, I. D., Makarov, D. I. & Kaisina, E. I. 2013, AJ, 145, 101 (2013AJ....145..101K)
  Cite: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier); Ochsenbein, F., Bauer, P. & Marcout, J. 2000, A&AS, 143, 23

McConnachie (2012) Local Group catalogue, tables 1-2 via CDS VizieR J/AJ/144/4
  Publisher: American Astronomical Society (AJ); distributed by CDS Strasbourg (VizieR)
  Licence: Not redistributed: used only to cross-check Local Group distance moduli at build time (verification.mcconnachie).
  Licence/terms URL: https://cds.unistra.fr/vizier-org/licences_vizier.html
  Licence status: not-redistributed
  Cite: McConnachie, A. W. 2012, AJ, 144, 4 (2012AJ....144....4M)
  Cite: This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier); Ochsenbein, F., Bauer, P. & Marcout, J. 2000, A&AS, 143, 23

SIMBAD positions of the Messier objects (repository file public/deep-sky/messier-simbad-2026-10-17.json)
  Publisher: CDS Strasbourg
  Licence: Not redistributed: positions used only to identify which catalogue galaxy each Messier number is.
  Licence/terms URL: https://opendatacommons.org/licenses/odbl/1-0/
  Licence status: not-redistributed
  Cite: This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France (Wenger et al. 2000, A&AS, 143, 9)

Vanyx editorial identifications: Messier numbers with their NGC numbers, popular names and named groups
  Publisher: Vanyx (this pack)
  Licence: Names and identifications are facts compiled for this pack (each Messier identification confirmed by position and catalogue names at build time).
  Licence/terms URL: https://creativecommons.org/publicdomain/zero/1.0/
  Licence status: open
  Used in: local-55f6bbca9cc7fc1e.vxc, groups-7c73ebe649f27e76.vxc, distances-1-a88c3a0c319df4bc.vxc, redshift-1-e17c45d891bf45d5.vxc

CMB dipole used to convert heliocentric velocities to the CMB frame
  Publisher: Planck Collaboration
  Licence: A published constant (369.82 km/s toward l = 264.021 deg, b = 48.253 deg).
  Licence/terms URL: https://doi.org/10.1051/0004-6361/201833880
  Licence status: open
  Used in: redshift-1-e17c45d891bf45d5.vxc, redshift-2-48db34a9d17a280a.vxc, redshift-3-cfb9fd5415999673.vxc
  Cite: Planck Collaboration 2020, A&A, 641, A1 (Planck 2018 results. I.)

Modifications: unit conversions (distance moduli to Mpc, arcsec radii to arcmin diameters, sexagesimal to degrees,
heliocentric to CMB-frame velocities for redshift distances), cross-identification across catalogues, position angles
folded to [0, 180), and table restructuring. Original values are kept where conversions were applied (distance moduli).