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An Aligned Very-low-mass Star Orbiting an M Dwarf and Obliquity Patterns across Giant Planets, Brown Dwarfs, and Binary Stars

  • Authors: Tianjun Gan, Alexandrine L'Heureux, Étienne Artigau, Charles Cadieux, René Doyon, Neil J. Cook, Shude Mao

Tianjun Gan et al 2026 The Astrophysical Journal Letters 1002 .

  • Provider: AAS Journals

Caption: Figure 1.

Left panel: the phase-folded TESS and RBO light curves. The light-blue dots are the binned TESS light curve with a binning size of about 180 s. Middle panel: the out-of-transit radial velocities from HPF and HARPS-N. Right panel: the two-night SPIRou RM measurements after subtracting the best Keplerian model. The plotted error bars are the quadrature sums of the uncertainties of individual measurements and the jitters. The best-fit models are shown as black curves in each plot. The residuals are presented in three bottom panels.

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