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Feeling the Pull: A Study of Natural Galactic Accelerometers. II. Kinematics and Mass of the Delicate Stellar Stream of the Palomar 5 Globular Cluster

  • Authors: Rodrigo A. Ibata, Geraint F. Lewis, Guillaume Thomas, Nicolas F. Martin, and Scott Chapman

2017 The Astrophysical Journal 842 120.

  • Provider: AAS Journals

Caption: Figure 10.

Stellar number-density profile. The CFHT number counts in the magnitude range ﹩19\lt {g}_{0}\lt 23﹩ and that lie within the cluster CMD selection region chosen in Paper I are shown as a function of radius from the cluster center. The King model plotted over the data (dashed red line) corresponds to the most likely fit shown in Figure 11 and has a central dispersion parameter of ﹩{\sigma }_{0}=0.403\,\mathrm{km}\,{{\rm{s}}}^{-1}﹩, a tidal radius of ﹩{r}_{t}=0.145\,\mathrm{kpc}﹩ (﹩21\buildrel{\prime\prime}\over{.} 2﹩, marked with a vertical dashed line), and a mass of ﹩M=4293\,{M}_{\odot }﹩. The continuous red line shows the profile including the fitted contamination fraction (C = 0.111).

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