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Overfitting Affects the Reliability of Radial Velocity Mass Estimates of the V1298 Tau Planets

  • Authors: Sarah Blunt, Adolfo Carvalho, Trevor J. David, Charles Beichman, Jon K. Zink, Eric Gaidos, Aida Behmard, Luke G. Bouma, Devin Cody, Fei Dai, Daniel Foreman-Mackey, Sam Grunblatt, Andrew W. Howard, Molly Kosiarek, Heather A. Knutson, Ryan A. Rubenzahl, Corey Beard, Ashley Chontos, Steven Giacalone, Teruyuki Hirano, Marshall C. Johnson, Jack Lubin, Joseph M. Akana Murphy, Erik A Petigura, Judah Van Zandt, Lauren Weiss

Sarah Blunt et al 2023 The Astronomical Journal 166 .

  • Provider: AAS Journals

Caption: Figure 7.

HARPS-N RVs and contemporaneous LCO photometry from SM21, phase folded to the rotation period and colored by observation time. Top: LCO photometry. Bottom: HARPS-N RVs, with fitted jitter values from the preferred SM21 fit added to the error bars. One- and two-component sinusoidal fits are also shown. Takeaway: the presence of a strong periodogram peak at P rot/2 results from the higher-order shape of the RV rotation pattern. This pattern is not present in the LCO photometry, which is approximately sinusoidal over the rotation period.

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