Figure 5 from Persistent Starspot Signals on M Dwarfs: Multiwavelength Doppler Observations with the Habitable-zone Planet Finder and Keck/HIRES

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Persistent Starspot Signals on M Dwarfs: Multiwavelength Doppler Observations with the Habitable-zone Planet Finder and Keck/HIRES

Authors: Paul Robertson, Gudmundur Stefansson, Suvrath Mahadevan, Michael Endl, William D. Cochran, Corey Beard, Chad F. Bender, Scott A. Diddams, Nicholas Duong, Eric B. Ford, Connor Fredrick, Samuel Halverson, Fred Hearty, Rae Holcomb, Lydia Juan, Shubham Kanodia, Jack Lubin, Andrew J. Metcalf, Andrew Monson, Joe P. Ninan, Jonathan Palafoutas, Lawrence W. Ramsey, Arpita Roy, Christian Schwab, Ryan C. Terrien, and Jason T. Wright

2020 The Astrophysical Journal 897 125.

Provider: AAS Journals

Caption: Figure 5.

HPF and HIRES RVs of G227-22, folded to the stellar rotation period. HIRES RVs taken during the stellar flare are marked with pink circles. In the top panel, we have used the best-fit period derived from the TESS lightcurve, while the lower panel uses a period that is 4σ shorter. Phase (ϕ₀) of the RV signals is consistent when we adopt the shorter period.

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