Galactic Rotation Parameters Based on Stars from Activ Star-Forming Regions with Data from the Gaia DR2 Catalogue

Abstract

We have studied a sample of more than 25 000 young stars with proper motions and trigonometric parallaxes from the Gaia DR2 catalogue. The relative errors of their parallaxes do not exceed 10\%. The selection of stars belonging to active star-forming regions was made by Marton et al. based on data from the Gaia DR2 catalogue by invoking infrared measurements from the WISE and Planck catalogues. Low-mass T Tauri stars constitute the majority of sample stars. The following parameters of the angular velocity of Galactic rotation have been found from them: ${\Omega }_0=28.40\pm 0.11$ km s${}^{-1}$ kpc${}^{-1}$, ${\Omega }_0^{{}^{\prime }}=-3.933\pm 0.033$ km s${}^{-1}$ kpc${}^{-2}$ and ${\Omega }_0^{{}^{\prime \prime }}=0.804\pm 0.040$ km s${}^{-1}$ kpc${}^{-3}$. The Oort constants are $A=15.73\pm 0.32$ km s${}^{-1}$ kpc${}^{-1}$ and $B=-12.67\pm 0.34$ km s${}^{-1}$ kpc${}^{-1}$, while the circular rotation velocity of the solar neighborhood around the Galactic center is $V_0=227\pm 4$ km s${}^{-1}$ for the adopted Galactocentric distance of the Sun $R_0=8.0\pm 0.15$ kpc.

arXiv comment12 pages, 4 figures, 4 tables

References in corpus (28)

• The Gaia mission
• Gaia Data Release 2: The astrometric solution
• Local Kinematics and the Local Standard of Rest
• A Hipparcos census of the nearby OB associations
• A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty
• Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
• Gaia Data Release 2: Catalogue validation
• Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
• Relativistic redshift of the star S0-2 orbiting the Galactic center supermassive black hole
• Galactic Kinematics of Cepheids from Hipparcos Proper Motions
• 3D mapping of young stars in the solar neighbourhood with Gaia DR2
• Galactic rotation in Gaia DR1
• Identification of Young Stellar Object candidates in the $Gaia$ DR2 x AllWISE catalogue with machine learning methods
• The Oort Constants Measured from Proper Motions
• A comparison of the local spiral structure from Gaia DR2 and VLBI maser parallaxes
• Kinematics of young stars. II. Galactic spiral structure
• Galactic masers: kinematics, spiral structure and the disk dynamic state
• Recent advances in the determination of some Galactic constants in the Milky Way
• Median Statistics Estimate of the Distance to the Galactic Center
• Clustering of Local Group distances: publication bias or correlated measurements? V. Galactic rotation constants
• Periodic Pattern in the Residual-Velocity Field of OB Associations
• The local standard of rest from data on young objects with account for the Galactic spiral density wave
• A comprehensive study of 94 open clusters based on the data from IPHAS, GAIA DR2, and other sky surveys
• Determination of the Galactic Rotation Curve from OB Stars
• Kinematic Properties of Open Star Clusters with Data from the Gaia DR2 Catalogue
• Galactic Rotation Based on OB Stars from the Gaia DR2 Catalogue
• Testing the distance scale of the Gaia TGAS catalogue by kinematic method
• Kinematics of T Tauri Stars Close to the Sun from the Gaia DR2 Catalogue

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