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Confirmation of Fe I on MASCARA-5 b’s Dayside Observed With EXPRES

  • Authors: James T. Sikora, Joe Llama, Rachael M. Roettenbacher, Elisabeth M. Brann, Jean-Michel Désert, Alex S. Polanski, Malena Rice, Lily Zhao

James T. Sikora et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 5.

Stellar rest-frame CCF(v, t) values calculated using the Fe I template (Figure 4) for the four nights of observations: 2023 October 4 (top left), 2024 November 10 (bottom left), 2025 May 9 (top right), and 2025 June 23 (bottom right). The red dashed lines bracket the expected planetary radial velocity assuming Kp = 187.6 km s−1 and Δv = 0 km s−1.

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