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Interferometric Detection and Orbit Modeling of the Subcomponent in the Hot-dust System κ Tuc A: A Low-mass Star on an Eccentric Orbit in a Hierarchical-quintuple System

  • Authors: T. A. Stuber, A. Mérand, F. Kirchschlager, S. Wolf, G. Weible, O. Absil, T. D. Pearce, G. Garreau, J.-C. Augereau, W. C. Danchi, D. Defrère, V. Faramaz-Gorka, J. W. Isbell, J. Kobus, A. V. Krivov, R. Laugier, K. Ollmann, R. G. Petrov, P. Priolet, J. P. Scott, K. Tsishchankava, S. Ertel

T. A. Stuber et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 4.

Corner plot showing the converged orbitize! posterior sample thinned by a factor of 10 (i.e., 107 samples). We show gray 200-bin histograms for each orbital element along the diagonal with a KDE overplotted in black. Dashed and dotted lines mark the median and 0.16/0.84 quantiles computed from the complete posterior sample. The solid contours in the off-diagonal panels show the 2σ, 1.5σ, and 1σ equivalent levels estimated from two-dimensional KDEs, containing ≈86.5%, ≈67.5%, and ≈39.3% of the samples, with σ being the standard deviation of a circular bivariate Gaussian. Samples are scattered below the 2σ equivalent levels, and the two-dimensional KDEs are shown with filled contours above this level.

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