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The Discovery of Tidal Tails around the Globular Cluster NGC 7492 with Pan-STARRS1

  • Authors: C. Navarrete, V. Belokurov, and S. E. Koposov

2017 The Astrophysical Journal Letters 841 L23.

  • Provider: AAS Journals

Caption: Figure 2.

Logarithm of the density of stars that passed the two matched filters (see the main text). The map is 43 × 43 pixels across and was smoothed using a Gaussian filter with a standard deviation of 0.°12. The scale between degrees and the physical distance, in kpc, is indicated by the bar at the left bottom corner. The innermost circle corresponds to the tidal radius of the cluster. The contour encloses the pixels with weights that are >1σ above the mean background. Note the two narrow stellar tails extending symmetrically from the cluster. As a reference, in the upper right corner, the direction towards the Galactic center (G.C.) and towards increasing Galactic latitude, b, values are indicated by the arrows. The dashed white line marks the direction of the Sgr stream stars according to the model from Law & Majewski (2010).

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