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Inferring Stellar Densities with Flexible Models. I. The Distribution of RR Lyrae in the Milky Way with Gaia DR3

  • Authors: Madeline Lucey, Cecilia Mateu, Adrian M. Price-Whelan, David W. Hogg, Hans-Walter Rix, Robyn E. Sanderson

Madeline Lucey et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 5.

The inferred Galactic distribution of RRL as a GMM. The face-on distribution evaluated at Z = 0 kpc is shown in the left panel. The middle and right panels show the edge-on distributions evaluated at X = 0 kpc and Y = 0 kpc, respectively. The location of the Sun is shown as a black star in the left and middle panels. In all panels, we include an ellipse (red-dashed line) which demonstrates the shape and tilt of the halo model from J. J. Han et al. (2022). We also show the direction to Sagittarius which is located at (17.9, 2.6, −6.6) kpc (E. Vasiliev et al. 2021).

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