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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 3.

Comparing the RM fit to “blue-only” RVs (a) and “red-only” RVs (b). The RV curve for the “blue-only” RV orders spans orders from 3975–6447 Å and the “red-only” orders span orders from 6447–8920 Å. For comparison, the slope of the “white-light” RV model used in the full analysis is overplotted as the gray-dashed line in both panels. The slope in the blue orders is steeper than in the red, suggesting the RV slope is due to stellar activity such as a spot on the surface of the star.

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