Fig. 6
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Distribution average vGV across Galactic longitude for metal-poor ([Fe/H] < −2.0 dex) RR Lyrae variables. The blue circles and red squares represent prograde and retrograde RR Lyrae stars, respectively. Here we take bins in Galactic longitude between between −8.0 to 8.0 deg in steps of 2 deg. The dashed line represents the rotation curve for the bar model from Shen et al. (2010) at b = 4 deg.
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