Extended Data Fig. 1: Tracer population properties as a function of distance.
From: Detection of the Milky Way reflex motion due to the Large Magellanic Cloud infall
a, Logarithm of number of sources larger than some Galactocentric radius, r, as a function of Galactocentric radius r in kiloparsecs. We show the three datasets analysed in this paper in colour (red: K Giants, blue: Blue Horizontal Branch, orange: satellites). We show two explored, but unused, datasets in grey (solid grey: globular clusters, dashed gray: RR Lyrae stars). b, The mean proper motion error in milliarcseconds per year for the stellar sources (K Giants, Blue Horizontal Branch, RR Lyrae), as a function of Galactocentric radius. As the brightest sample, K Giants have the smallest uncertainty. We mark 100, 200, and 300 km s−1, the approximate range of halo velocities, as a dotted black curves.
