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The Baryonic Mass–Halo Mass Relation of Extragalactic Systems

  • Authors: Stacy S. McGaugh, Tobias Mistele, Francis Duey, Konstantin Haubner, Federico Lelli, James M. Schombert, Pengfei Li

Stacy S. McGaugh et al 2026 The Astrophysical Journal 1001 .

  • Provider: AAS Journals

Caption: Figure 2.

The observed flat velocity Vf as it relates to the fitted V200 for pseudo-isothermal (left panel) and NFW (right panel) halos (P. Li et al. 2020). Filled points have formal uncertainties <20% in V200; open points are less accurate fits. The solid line shows Vf = V200. The gray line in the right panel shows Equation (2a) of H. Katz et al. (2019), which corresponds roughly to fv ≈ 1.4.

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