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On the Origin of a Rotating Metal-poor Stellar Population in the Milky Way Nuclear Cluster

  • Authors: Manuel Arca Sedda, Alessia Gualandris, Tuan Do, Anja Feldmeier-Krause, Nadine Neumayer, and Denis Erkal

2020 The Astrophysical Journal Letters 901 L29.

  • Provider: AAS Journals

Caption: Figure 3.

Top panels: velocity vectors of 2% of the simulated stars (Ns = 20,971) within a sphere of 5 pc radius centered on the Galactic center assuming no rotation in the NC. Former SC members are labeled with blue arrows, whereas NC stars are represented with red arrows. Vector length is proportional to stellar velocity. Bottom panels: distribution of the circularity parameter Jz/J for all stars in the Galactic center (red/filled), the SC (blue/dashed), and the whole system (blue/solid) within a sphere of 5 pc radius centered on the Galactic center assuming a nonrotating (left panel, model (a)) or rotating (right panel, model (b)) NC.

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