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TOI-4600 b and c: Two Long-period Giant Planets Orbiting an Early K Dwarf

  • Authors: Ismael Mireles, Diana Dragomir, Hugh P. Osborn, Katharine Hesse, Karen A. Collins, Steven Villanueva, Allyson Bieryla, David R. Ciardi, Keivan G. Stassun, Mallory Harris, Jack J. Lissauer, Richard P. Schwarz, Gregor Srdoc, Khalid Barkaoui, Arno Riffeser, Kim K. McLeod, Joshua Pepper, Nolan Grieves, Vera Maria Passegger, Solène Ulmer-Moll, Joseph E. Rodriguez, Dax L. Feliz, Samuel Quinn, Andrew W. Boyle, Michael Fausnaugh, Michelle Kunimoto, Pamela Rowden, Andrew Vanderburg, Bill Wohler, Jon M. Jenkins, David W. Latham, George R. Ricker, Sara Seager, Joshua N. Winn

Ismael Mireles et al 2023 The Astrophysical Journal Letters 954 .

  • Provider: AAS Journals

Caption: Figure 1.

Top: full TESS PDCSAP light curve of TOI-4600 showing four clear transits of TOI-4600 b and two transits of TOI-4600 c. An additional transit of TOI-4600 b is obscured by a sudden systematic increase in flux due to scattered light near TBJD 1850 while another transit at TBJD 2750 is obscured by a transit of TOI-4600 c that occurs 1.5 days later. Another transit of TOI-4600 b near TBJD 2419 occurred during a downlink gap and thus was not observed by TESS. The apparent difference in the transit depths is due to the different time resolutions, with the left portion showing 30 minute data and the middle and right portions showing 2 minute data. Bottom left: phase-folded detrended 2 (gray) and 30 minute (black) TESS data and best-fit model for TOI-4600 b. Bottom right: same as the bottom left but for TOI-4600 c.

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