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Refining the Census of the Upper Scorpius Association with Gaia

  • Authors: K.L. Luhman, and T.L. Esplin

2020 The Astronomical Journal 160 44.

  • Provider: AAS Journals

Caption: Figure 4.

Proper motion offsets vs. parallax for candidate young stars within the boundaries of Sco–Cen selected from Figure 2 (top). A Gaussian mixture model has been applied to these data to estimate probabilities of membership in Sco–Cen and the field population. The stars that have >90% probabilities of membership in Sco–Cen are shown (bottom). The three Sco–Cen components in the model are represented by the ellipses (2σ).

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