Mapping the Milky Way Disk with Gaia DR3: 3D extended kinematic maps and rotation curve to $\approx 30$ kpc

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 three dimensional velocity components in the range of Galactocentric distances $R$ between 8 kpc and 30 kpc with their corresponding errors and root mean square 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 $R\approx 30$ 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 $\approx 27.5$ 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.

arXiv comment14 pages, 10 figures, 1 table. Accepted for publication in The Astrophysical Journal

References in corpus (37)

• A Universal Density Profile from Hierarchical Clustering
• The Gaia mission
• Local Kinematics and the Local Standard of Rest
• Trigonometric Parallaxes of High Mass Star Forming Regions: the Structure and Kinematics of the Milky Way
• Gaia Early Data Release 3: The astrometric solution
• The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars
• A dynamically young and perturbed Milky Way disk
• Vertical waves in the solar neighbourhood in Gaia DR2
• Gaia Data Release 2: Mapping the Milky Way disc kinematics
• The Milky Way's circular velocity curve between 4 and 14 kpc from APOGEE data
• The Circular Velocity Curve of the Milky Way from $5$ to $25$ kpc
• Galactoseismology: Discovery of Vertical Waves in the Galactic Disk
• "Skinny Milky Way, Please", says Sagittarius
• The Milky Way's rotation curve out to 100 kpc and its constraint on the Galactic mass distribution
• Kinematics of the stellar halo and the mass distribution of the Milky Way using BHB stars
• Direct determination of the spiral pattern rotation speed of the Galaxy
• Rotation curve of the Milky Way from Classical Cepheids
• Rotation Curve of the Milky Way out to $\sim$ 200 kpc
• Radial Distribution of Stellar Motions in Gaia DR2
• The Galactic warp revealed by Gaia DR2 kinematics
• Riding the kinematic waves in the Milky Way disk with Gaia
• Gaia Early Data Release 3: The Galactic anticentre
• Hic sunt dracones: Cartography of the Milky Way spiral arms and bar resonances with Gaia Data Release 2
• Gaia kinematics reveal a complex lopsided and twisted Galactic disc warp
• 3D Asymmetrical motions of the Galactic outer disk with LAMOST K giant stars
• Milky Way total Mass derived by Rotation Curve and Globular Cluster kinematics from Gaia EDR3
• Mapping the Galactic disk with the LAMOST and Gaia Red clump sample. II. 3D asymmetrical kinematics of mono-age populations in the disk between 6$-14$ \,kpc
• Milky Way Mass with K Giants and BHB Stars Using LAMOST, SDSS/SEGUE, and Gaia: 3D Spherical Jeans Equation and Tracer Mass Estimator
• Gaia-DR2 extended kinematical maps. Part I: Method and application
• Gaia-DR2 extended kinematical maps. Part II: Dynamics in the Galactic disk explaining radial and vertical velocities
• Milky Way rotation curve from proper motions of red clump giants
• Disk stars in the Milky Way detected beyond 25 kpc from its center
• Gaia-DR2 extended kinematical maps. Part III: Rotation curves analysis, dark matter, and Modified Newtonian dynamics tests
• Which Milky Way masses are consistent with the slightly declining 5-25 kpc rotation curve?
• Kinematics of symmetric Galactic longitudes to probe the spiral arms of the Milky Way with Gaia
• The structure and kinematics of the the Galaxy thin gaseous disc outside the solar orbit
• The intricate Galaxy disk: velocity asymmetries in Gaia-TGAS

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