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Validation of 13 Hot and Potentially Terrestrial TESS Planets

2022; Institute of Physics; Volume: 163; Issue: 2 Linguagem: Inglês

10.3847/1538-3881/ac4334

1538-3881

Steven Giacalone, Courtney D. Dressing, Christina Hedges, Veselin B. Kostov, Karen A. Collins, Eric L. N. Jensen, Daniel A. Yahalomi, Allyson Bieryla, David R. Ciardi, Steve B. Howell, J. Lillo-Box, Khalid Barkaoui, Jennifer G. Winters, Elisabeth C. Matthews, John H. Livingston, Samuel N. Quinn, B. S. Safonov, Charles Cadieux, Elise Furlan, Ian J. M. Crossfield, Avi M. Mandell, Emily A. Gilbert, Ethan Kruse, Elisa V. Quintana, G. Ricker, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Britt Duffy Adkins, David Baker, Thomas Barclay, D. Barrado, Natalie M. Batalha, A. Belinski, Z. Benkhaldoun, Lars A. Buchhave, Luca Cacciapuoti, David Charbonneau, Ashley Chontos, Jessie L. Christiansen, Ryan Cloutier, Kevin I. Collins, Dennis M. Conti, Neil Cutting, Scott Dixon, René Doyon, Mohammed El Mufti, E. Esparza-Borges, Zahra Essack, Akihiko Fukui, Tianjun Gan, Kaz Gary, Mourad Ghachoui, M. Gillon, Éric Girardin, Ana Glidden, Erica J. Gonzales, P. Guerra, Elliott P. Horch, K. G. Hełminiak, Andrew W. Howard, Daniel Huber, Jonathan Irwin, Giovanni Isopi, Emmanuël Jehin, T. Kagetani, Stephen R. Kane, Kiyoe Kawauchi, John F. Kielkopf, Pablo Lewin, Lindy Luker, Michael B. Lund, F. Mallia, Shude Mao, Bob Massey, Rachel A. Matson, Ismael Mireles, M. Mori, F. Murgas, Norio Narita, Tanner O’Dwyer, Erik A. Petigura, Alex S. Polanski, F. J. Pozuelos, Ε. Πάλλη, H. Parviainen, Peter Plavchan, Howard M. Relles, Paul Robertson, Mark E. Rose, Pamela Rowden, Arpita Roy, Arjun B. Savel, Joshua E. Schlieder, C. Schnaible, Richard P. Schwarz, Ramatholo Sefako, A. Selezneva, Brett Skinner, Chris Stockdale, Ivan A. Strakhov, Thiam-Guan Tan, Guillermo Torres, R. Tronsgaard, Joseph D. Twicken, David Vermilion, I. A. Waite, Bradley Walter, Gavin Wang, Carl Ziegler, Y. Zou,

Astro and Planetary Science

The James Webb Space Telescope (JWST) will be able to probe the atmospheres and surface properties of hot, terrestrial planets via emission spectroscopy. We identify 18 potentially terrestrial planet candidates detected by the Transiting Exoplanet Survey Satellite (TESS) that would make ideal targets for these observations. These planet candidates cover a broad range of planet radii ($R_{\rm p} \sim 0.6 - 2.0 R_\oplus$) and orbit stars of various magnitudes ($K_s = 5.78 - 10.78$, $V = 8.4 - 15.69$) and effective temperatures ($T_{\rm eff }\sim 3000 - 6000$ K). We use ground-based observations collected through the TESS Follow-up Observing Program (TFOP) and two vetting tools -- DAVE and TRICERATOPS -- to assess the reliabilities of these candidates as planets. We validate 13 planets: TOI-206 b, TOI-500 b, TOI-544 b, TOI-833 b, TOI-1075 b, TOI-1411 b, TOI-1442 b, TOI-1693 b, TOI-1860 b, TOI-2260 b, TOI-2411 b, TOI-2427 b, and TOI-2445 b. Seven of these planets (TOI-206 b, TOI-500 b, TOI-1075 b, TOI-1442 b, TOI-2260 b, TOI-2411 b, and TOI-2445 b) are ultra-short-period planets. TOI-1860 is the youngest ($133 \pm 26$ Myr) solar twin with a known planet to date. TOI-2260 is a young ($321 \pm 96$ Myr) G dwarf that is among the most metal-rich ([Fe/H] = $0.22 \pm 0.06$ dex) stars to host an ultra-short-period planet. With an estimated equilibrium temperature of $\sim 2600$ K, TOI-2260 b is also the fourth hottest known planet with $R_{\rm p} < 2 \, R_\oplus$.