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- W2502700780 abstract "view Abstract Citations (110) References (41) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Ellipticity of the Galactic Disk Kuijken, Konrad ; Tremaine, Scott Abstract We investigate two kinds of constraints on the ellipticity of the Galactic disk: local constraints, based on the kinematics of the solar neighborhood (such as the Oort constants, the axis ratio of the velocity ellipsoid, the vertex deviation, and the radial velocity of the local standard of rest relative to the Galactic center), and global constraints (H I tangent point velocities, the velocity fields of distant carbon stars, Cepheids and H II regions, and the kinematics of distant H I). Local and global constraints independently suggest that the Sun lies near the minor axis of the potential of an elliptical Galactic disk, with equipotential axis ratio 0.9. The kinematic data are consistent with a flat rotation curve of constant ellipticity, with a mean rotation speed of 200 km/s. In this model, the present velocity of the local standard of rest is 180 km/s. Publication: The Astrophysical Journal Pub Date: January 1994 DOI: 10.1086/173635 Bibcode: 1994ApJ...421..178K Keywords: Elliptical Galaxies; Ellipticity; Galactic Structure; Kinematics; Milky Way Galaxy; Astronomical Models; Astrophysics; Radial Velocity; Shapes; Sun; Astrophysics; GALAXY: FUNDAMENTAL PARAMETERS; GALAXY: HALO; GALAXY: KINEMATICS AND DYNAMICS; GALAXY: STRUCTURE; GALAXY: SOLAR NEIGHBORHOOD full text sources ADS | data products SIMBAD (5)" @default.
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- W2502700780 title "On the ellipticity of the Galactic disk" @default.
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