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Revisiting ϵ Eridani with NEID: Identifying New Activity-sensitive Lines in a Young K Dwarf Star

  • Authors: Sarah Jiang, Arpita Roy, Samuel Halverson, Chad F. Bender, Carlos Selgas, O. Justin Otor, Suvrath Mahadevan, Guđmundur Stefánsson, Ryan C. Terrien, Christian Schwab

Sarah Jiang et al 2024 The Astronomical Journal 167 .

  • Provider: AAS Journals

Caption: Figure 6.

Time series of the measured RVs and S-indices and corresponding periodograms for each NEID observation used in our analysis. In the RV time series, we subtract the systematic RV of ϵ Eri, 16.49 km s−1, and plot the Δ RVs. Both periodograms display a peak at ∼11 days, the rotational period of the star (Howard & Fulton 2016; Mawet et al. 2019).

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