![]() Additionally, we demonstrate that the transient winding spiral potential can create a Hercules-like feature in the kinematics of the solar neighbourhood, either alone, or in combination with a long-slow bar potential. We show that the ridges in these observations are well reproduced by the winding spiral model. Jon Caine, a respected lecturer in a university, was found missing. We construct test particle models of the winding spiral structure, and compare the resulting distribution of orbits with the observed two-dimensional velocity distribution in the extended solar neighbourhood and with the distribution of rotational velocities over 8 kpc along the Sun-Galactic-centre-Galactic anti-centre line. With Peter Davis, Ayez Shaukat Fonseka Farid, Kim Fukazawa, Linora Low. ![]() We show that these can arise naturally from winding transient spiral structure that is commonly seen in N-body simulations of disk galaxies. Parallel fabrication of spiral surface structures by interference pattern of circularly polarized beams. Hunt and 3 other authors Download PDF Abstract:The second data release from ESA's Gaia mission has revealed many ridge-like structures in the velocity distribution of the Milky Way. Download a PDF of the paper titled Transient spiral structure and the disc velocity substructure in Gaia DR2, by Jason A.
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