Paper: TOI 560: Two Transiting Planets Orbiting a K Dwarf Validated with iSHELL, PFS, and HIRES RVs
Authors: Mohammed El Mufti, Peter P. Plavchan, Howard Isaacson, Bryson L. Cale, Dax L. Feliz, Michael A. Reefe, Coel Hellier, Keivan Stassun, Jason Eastman, Alex Polanski, Ian J. M. Crossfield, Eric Gaidos, Veselin Kostov, Justin M. Wittrock, Joel Villaseñor, Joshua E. Schlieder, Luke G. Bouma, Kevin I. Collins, Farzaneh Zohrabi, Rena A. Lee, Ahmad Sohani, John Berberian, David Vermilion, Patrick Newman, Claire Geneser, Angelle Tanner, Natalie M. Batalha, Courtney Dressing, Benjamin Fulton, Andrew W. Howard, Daniel Huber, Stephen R. Kane, Erik A. Petigura, Paul Robertson, Arpita Roy, Lauren M. Weiss, Aida Behmard, Corey Beard, Ashley Chontos, Fei Dai, Paul A. Dalba, Tara Fetherolf, Steven Giacalone, Michelle L. Hill, Lea A. Hirsch, Rae Holcomb, Jack Lubin, Andrew Mayo, Teo Močnik, Joseph M. Akana Murphy, Lee J. Rosenthal, Ryan A. Rubenzahl, Nicholas Scarsdale, Christopher Stockdale, Karen Collins, Ryan Cloutier, Howard Relles, Thiam-Guan Tan, Nicholas J Scott, Zach Hartman, Elisabeth Matthews, David R. Ciardi, Erica Gonzales, Rachel A. Matson, Charles Beichman, Allyson Bieryla, E. Furlan, Crystal L. Gnilka, Steve B. Howell, Carl Ziegler, César Briceño, Nicholas Law, Andrew W. Mann, Markus Rabus, Marshall C. Johnson, Jessie Christiansen, Laura Kreidberg, David Anthony Berardo, Drake Deming, Varoujan Gorjian, Farisa Y. Morales, Björn Benneke, Diana Dragomir, Robert A. Wittenmyer, Sarah Ballard, Brendan P. Bowler, Jonathan Horner, John Kielkopf, Huigen Liu, Avi Shporer, C. G. Tinney, Hui Zhang, Duncan J. Wright, Brett C. Addison, Matthew W. Mengel, Jack Okumura
Figure caption: Top: joint BLS periodograms of the Sector 8 and 34 TESS light curves, before (black) after (gray) removing the transits of TOI 506 b, plotted as a function of period in days with the BLS standard deviation statistical significance power on the vertical axis (SDE). The periods of b and c are indicated as teal and green shaded regions, respectively. The vertical dashed lines correspond to integer (2x, 3x, 4x, etc.) and integer fraction (1/2, 1/3x, 1/4x, etc.) multiples of these periods in teal and green for b and c, respectively, as well. Note that the time units of BTJD are BJD-2457000.0 days. Second row: phased light curve for the two transits of TOI 560 c in the Sector 34 TESS light curve as unbinned black and binned (one hour) gray dots, plotted as a function of time in hours on the horizontal axis with respect to the transit conjunction time, and the normalized flux on the vertical axis. A teal transit model is overlaid. The blue dashed vertical lines correspond to the time of conjunction and transit ingress and egress. Third row: same as the second row, but the individual transits of TOI 560 c are plotted separately. Fourth row: the Sector 8 (left) and 34 (right) light curve of TOI 560, where the transit times of TOI 560 b and c are marked in teal and green, respectively, plotted as a function of time and normalized flux. This shows that TESS just missed observing TOI 560 c during this initial sector. The horizontal blue line is a line corresponding to 2 ppt, the approximate depth for TOI 560 c.