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NEID Reveals That the Young Warm Neptune TOI-2076 b Has a Low Obliquity

  • Authors: Robert C. Frazier, Gudmundur Stefánsson, Suvrath Mahadevan, Samuel W. Yee, Caleb I. Cañas, Joshua N. Winn, Jacob Luhn, Fei Dai, Lauren Doyle, Heather Cegla, Shubham Kanodia, Paul Robertson, John Wisniewski, Chad F. Bender, Jiayin Dong, Arvind F. Gupta, Samuel Halverson, Suzanne Hawley, Leslie Hebb, Rae Holcomb, Adam Kowalski, Jessica Libby-Roberts, Andrea S. J. Lin, Michael W. McElwain, Joe P. Ninan, Cristobal Petrovich, Arpita Roy, Christian Schwab, Ryan C. Terrien, Jason T. Wright

Robert C. Frazier et al 2023 The Astrophysical Journal Letters 944 .

  • Provider: AAS Journals

Caption: Figure 4.

Sky-projected obliquities (a, c) and 3D obliquities (b, d) for planetary systems as a function of age for single-transiting (a, b), and multi-transiting (c, d) systems. Planets with masses >0.3 M J and a/R < 10 are classified as hot Jupiters (black points), and as warm Jupiters if a/R > 10 (orange points). Planets with masses <0.3 M J are classified as sub-Saturns regardless of the value of a/R . This classification system is adopted from Albrecht et al. (2022). Despite a lack of a mass measurement of TOI-2076 b we classify it as a sub-Saturn due to its radius and distance. The position of TOI-2076 b is highlighted in red. Obliquity measurements for systems excluding TOI-2076 are drawn from Albrecht et al. (2022), Dai et al. (2023), Bourrier et al. (2023), and the TEPCAT database (Southworth 2011) where the error in the sky-projected obliquity was Δλ < 40°, and the fractional error on the age of the system was less than 90%. W107b denotes WASP-107b.

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