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POSEIDON I: The Dynamical Origins of Transiting Neptunes

  • Authors: Juan I. Espinoza-Retamal, Joshua N. Winn, Rafael Brahm, Cristobal Petrovich, Guđmundur Stefánsson, Hareesh Bhaskar, Elise Koo, Andrés Jordán, Marcelo Tala Pinto, Melissa J. Hobson, Hugo Veldhuis, Felipe I. Rojas, Johanna K. Teske, R. Paul Butler, Jeffrey D. Crane, Stephen Shectman, Shreyas Vissapragada, Gavin Boyle, Rodrigo Leiva, Vincent Suc

Juan I. Espinoza-Retamal et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 4.

Mass vs. radius diagram. Gray points are all the transiting exoplanets from TEPCat (J. Southworth 2011) as of 2025 November. Colored points convey the projected obliquity for systems with published measurements. Triangles indicate systems with only upper limits available for the mass. TOI-181 b and TOI-883 b are highlighted as stars following the same color code. The green dashed lines indicate the region where 10 ≤ Mp/M⊕ ≤ 50 or 2 ≤ Rp/R⊕ ≤ 6, which we considered as Neptunes. Neptune itself is highlighted as the white cross. Contours show the density of points.

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