http://arxiv.org/abs/1805.03171
Using 2MASS photometry of Gaia DR2 sources, we present a technique for selecting upper main sequence stars and giants without the need for individual extinction estimates, to a distance of 7 kpc from the Sun. The spatial distribution of the upper main sequence stars clearly shows the nearest spiral arms, while the large-scale kinematics of the two populations perpendicular to the Galactic plane both show for the first time a clear signature of the warp of the Milky Way.
E. Poggio, R. Drimmel, M. Lattanzi, et. al.
Wed, 9 May 18
28/55
Comments: 5 pages, 3 figures
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