Cited by 70Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, PhenomenaAstrophysical Phenomena and Observations

Mapping the Milky Way Disk with Gaia DR3: 3D Extended Kinematic Maps and Rotation Curve to ≈30 kpc

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Wang, Hai-Feng, Chrobáková, Žofia, López-Corredoira, Martín, Sylos Labini, Francesco·2023·The Astrophysical Journal

Abstract

We apply a statistical deconvolution of the parallax errors based on Lucy’s inversion method (LIM) to the Gaia DR3 sources to measure their 3D velocity components in the range of Galactocentric distances R between 8 and 30 kpc with their corresponding errors and rms values. We find results that are consistent with those obtained by applying LIM to the Gaia DR2 sources, and we conclude that the method gives convergent and more accurate results by improving the statistics of the data set and lowering observational errors. The kinematic maps reconstructed with LIM up to R ≈ 30 kpc show that the Milky Way is characterized by asymmetrical motions with significant gradients in all velocity components. Furthermore, we determine the Galaxy rotation curve V C (R) up to ≈27.5 kpc with the cylindrical Jeans equation assuming an axisymmetric gravitational potential. We find that V C (R) is significantly declining up to the largest radius investigated. Finally, we also measure V C (R) at different vertical heights, showing that, for R < 15 kpc, there is a marked dependence on Z, whereas at larger R the dependence on Z is negligible.

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Registry

Crossref · 10.3847/1538-4357/aca27c

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  • Wang et al. (2023) applied the Lucy iterative deconvolution method to the full Gaia DR3 source catalogue, statistically correcting the observed proper-motion distribution for parallax errors.

    “Wang et al. (2023) applied the Lucy iterative deconvolution method to the full Gaia DR3 source catalogue, statistically correcting the observed proper-motion distribution for parallax errors.”

    From The rotation curve of the Milky Way: State of the art, the Keplerian decline debate, and implications for dark matter (2026) · cites this paper as Wang et al. (2023)

    Section 3 (page not provided) says Wang et al. used Lucy’s inversion method to deconvolve parallax errors and statistically estimate distances and velocities for cells containing many stars. It describes deconvolving the distribution of sources along the line of sight, not the observed proper-motion distribution. The paper refers to a Gaia DR3 sample, but does not support the claim that the method was applied to the full source catalogue. (LLM, conf=0.88)

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  • The Keplerian behaviour is not a feature of the Jiao et al. reanalysis alone: although neither Wang et al. (2023) nor Ou et al. (2024) explicitly claim a Keplerian decline, the outer slopes of their own RCs, taken at face value, are consistent with one.

    “It is worth stressing that the Keplerian behaviour is not a feature of the Jiao et al. reanalysis alone: although neither Wang et al. (2023) nor Ou et al. (2024) explicitly claim a Keplerian decline, the outer slopes of their own RCs, taken at face value, are consistent with one”

    From The rotation curve of the Milky Way: State of the art, the Keplerian decline debate, and implications for dark matter (2026) · cites this paper as Wang et al. (2023)

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

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  • Wang et al. (2023) found a significant north-south kinematic asymmetry at R ∼ 20-25 kpc-stars above and below the plane show mean radial velocities differing by ∼10-20 km s^-1-directly indicating non-axisymmetric or non-equilibrium kinematics, violating one of the key assumptions of the Jeans equation (15).

    “An important finding is a significant north-south kinematic asymmetry at R ∼ 20-25 kpc-stars above and below the plane show mean radial velocities differing by ∼ 10-20 km s -1 -directly indicating non-axisymmetric or non-equilibrium kinematics, violating one of the key assumptions of the Jeans equation (15).”

    From The rotation curve of the Milky Way: State of the art, the Keplerian decline debate, and implications for dark matter (2026) · cites this paper as Wang et al. (2023)

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

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  • The subsequent DR3-based analyses of Wang et al. (2023), Jiao et al. (2023), and Ou et al. (2024) all find a steeper decline at R > 15 kpc.

    “The subsequent DR3-based analyses of Wang et al. (2023), Jiao et al. (2023), and Ou et al. (2024) all find a steeper decline at R &gt; 15 kpc, with the extreme interpretation of Jiao et al. (2023) claiming a Keplerian decline and a total mass nearly five times lower.”
  • Jiao et al. (2023) re-derived the RC of Wang et al. (2023) with a revised binning and a full systematic error budget, and compared it with a preliminary version of Ou et al. (2024) after reconciling their different distance scales.

    “Jiao et al. (2023) re-derived the RC of Wang et al. (2023) with a revised binning and a full systematic error budget, and compared it with a preliminary version of Ou et al. (2024) (circulated as Ou et al. 2023 on arXiv at the time of submission), after carefully reconciling their different distance scales;”

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Cites

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Research works printed but not linked: 6

  1. Binney, J., & Tremaine, S. 2008, Galactic Dynamics (Princeton, NJ: Princeton Univ. Press)
  2. Drimmel, R., Romero-Gomez, M., Chemin, L., et al. 2022, arXiv:2206.06207 · arXiv
  3. Gaia Collaboration, Antoja, T., McMillan, P. J., et al. 2021, A&A, 649, A8 · DOI
  4. Gaia Collaboration, Drimmel, R., Romero-Gomez, M., et al. 2022a, arXiv:2206.06207 · arXiv
  5. Gaia Collaboration, Vallenari, A., Brown, A. G. A., et al. 2022b, arXiv:2208. 00211
  6. Recio-Blanco, A., de Laverny, P., Palicio, P. A., et al. 2022, arXiv:2206.05541 · arXiv

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Authors
Wang, H.-F., Chrobáková, Ž., López-Corredoira, M., & Sylos Labini, F.
Affiliations
  • Comenius University Bratislava (SK)
  • Universidad de La Laguna (ES)
Venue
The Astrophysical Journal
Published
2022-12-28
Volume
942
Issue
1
Pages
12
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W4312223069
Cited by
70
References
44
Citations by year
2026: 13 · 2025: 20 · 2024: 26 · 2023: 11
FWCI
5.63
Type
journal article
Language
en
Open access
Locations
  • The Astrophysical Journal (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • arXiv (Cornell University)
Funders
NSFC (12173028)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysical Phenomena and Observations
Keywords
Galactic disk, Gaia DR3, rotation curves, disk kinematics

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