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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 6.

Lomb–Scargle periodogram of all RV data presented in SM21, and two-component sinusoidal fit passed through the same window function. Top: periodogram of all RVs (solid purple line) and a two-component sinusoidal fit to the data (filled gray). Middle/bottom: same, but zoomed in. The rotation period, its harmonic, and its 1 day aliases are labeled. Takeaway: the dominant Lomb–Scargle periodogram structure can be explained as harmonics and aliases of a single period at 2.91 days.

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