TOI-1408: Discovery and Photodynamical Modeling of a Small Inner Companion to a Hot Jupiter Revealed by TTVs

• Published in: arXiv.org
• Main Authors: Korth, Judith, Chaturvedi, Priyanka, Parviainen, Hannu, Carleo, Ilaria, Endl, Michael, Guenther, Eike W, Nowak, Grzegorz, Persson, Carina, MacQueen, Phillip J, Mustill, Alexander J, Cabrera, Juan, Cochran, William D, Lillo-Box, Jorge, Hobbs, David, Murgas, Felipe, Greklek-McKeon, Michael, Kellermann, Hanna, Hébrard, Guillaume, Fukui, Akihiko, Pallé, Enric, Jenkins, Jon M, Twicken, Joseph D, Collins, Karen A, Quinn, Samuel N, Šubjak, Ján, Beck, Paul G, Gandolfi, Davide, Mathur, Savita, Deeg, Hans J, Latham, David W, Albrecht, Simon, Barrado, David, Boisse, Isabelle, Bouy, Hervé, Delfosse, Xavier, Demangeon, Olivier, García, Rafael A, Hatzes, Artie P, Heidari, Neda, Ikuta, Kai, Kabáth, Petr, Knutson, Heather A, Livingston, John, Eder Martioli, Morales-Calderón, María, Morello, Giuseppe, Narita, Norio, Orell-Miquel, Jaume, Osborne, Hanna L M, Palakkatharappil, Dinil B, Pinter, Viktoria, Redfield, Seth, Relles, Howard M, Schwarz, Richard P, Seager, Sara, Shporer, Avi, Skarka, Marek, Srdoc, Gregor, Stangret, Monika, Thomas, Luis, Vincent Van Eylen, Watanabe, Noriharu, Winn, Joshua N
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 25.07.2024
• Subjects: Amplitudes; Extrasolar planets; Gas giant planets; Ground-based observation; Jupiter; Light curve; Modelling; Orbits; Physics - Earth and Planetary Astrophysics; Planet detection; Radial velocity; Satellite observation; Transit

We report the discovery and characterization of a small planet, TOI-1408 c, on a 2.2-day orbit located interior to a previously known hot Jupiter, TOI-1408 b (\(P=4.42\) d, \(M=1.86\pm0.02\,M_\mathrm{Jup}\), \(R=2.4\pm0.5\,R_\mathrm{Jup}\)) that exhibits grazing transits. The two planets are near 2:...