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TOI-2155 b: A Massive Brown Dwarf or a Very Low-mass Star?

  • Authors: Md Redyan Ahmed, Tansu Daylan, Theron W. Carmichael, Sarah L. Casewell, Anita Hafner, Jaime A. Alvarado-Montes, Allyson Bieryla, Samuel N. Quinn, Michael Calkins, Karen A. Collins, Cristilyn N. Watkins, Keivan G. Stassun, Boris S. Safonov, Maria V. Goliguzova, Giuseppe Marino, Dennis M. Conti, Peter Tuthill

Md Redyan Ahmed et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 4.

Position of TOI-2155 in the Teff–luminosity plane. The luminosity is derived from SED modeling. MIST isochrones at 1, 3, and 5 Gyr (using the nearest available grid values) with metallicity [Fe/H] = 0.1 are overlaid to illustrate the evolutionary state of the star. The location of TOI-2155 lies between the 3 and 5 Gyr isochrones, consistent with the inferred age of ﹩3.{2}_{-0.9}^{+1.9}﹩ Gyr. The horizontal error bar represents the uncertainty in effective temperature.

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