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The >100 kpc Distant Spur of the Sagittarius Stream and the Outer Virgo Overdensity, as Seen in PS1 RR Lyrae Stars

  • Authors: Branimir Sesar, Nina Hernitschek, Marion I. P. Dierickx, Mark A. Fardal, and Hans-Walter Rix

2017 The Astrophysical Journal Letters 844 L4.

  • Provider: AAS Journals

Caption: Figure 1.

Distribution of PS1 RRab stars within ﹩13^\circ ﹩ of the Sgr orbital plane, shown in two different projections. The color indicates the stars’ angular distance from the Sgr orbital plane (in ﹩{\tilde{{\rm{\Lambda }}}}_{\odot }﹩ and D coordinates). The gray areas indicate regions near the Galactic plane (dashed lines) where the PS1 RR Lyrae sample is significantly incomplete. The positions of the Galactic center and the Sgr dSph galaxy are shown by the yellow star and red open diamond symbols, respectively. The Sun is located at ﹩({\tilde{{\rm{\Lambda }}}}_{\odot },D)=0^\circ ,0\,\mathrm{kpc}﹩. The features annotated by numbers are discussed in Section 3.

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