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2012MNRAS.422.1283F - Mon. Not. R. Astron. Soc., 422, 1283-1293 (2012/May-2)
Evidence of a bisymmetric spiral in the Milky way.
FRANCIS C. and ANDERSON E.
Abstract (from CDS):
As a result of this study, we find evidence in 2MASS of a bar of length 4.2±0.1 kpc at angle 30°± 10°. We extend spiral structure by more than a full turn towards the Galactic Centre, and confirm that the Milky Way is a two-armed grand-design bisymmetric spiral with pitch angle 5{img}56±0{img}06. Memberships of kinematic groups are assigned to 98 per cent of local disc stars and it is seen that the large majority of local stars have orbits aligned with this spiral structure.
Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS
Journal keyword(s): stars: kinematics and dynamics - Galaxy: kinematics and dynamics - solar neighbourhood - Galaxy: structure
Simbad objects: 14
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