Characterization of Seven Transiting Systems Including Four Warm Jupiters From SOPHIE and TESS

We present the study of seven systems, three of which TOI-2295, TOI-2537, and TOI-5110 are newly discovered planetary systems.

Through the analysis of TESS photometry, SOPHIE radial velocities, and high-spatial resolution imaging, we found that TOI-2295b, TOI-2537b, and TOI-5110b are transiting warm Jupiters with orbital periods ranging from 30 to 94 d, masses between 0.9 and 2.9 MJ, and radii ranging from 1.0 to 1.5 RJ. Both TOI-2295 and TOI-2537 each harbor at least one additional, outer planet.

Their outer planets TOI-2295c and TOI-2537c are characterized by orbital periods of 966.5 +/- 4.3 and 1920^{+230}{-140} d, respectively, and minimum masses of 5.61^{+0.23}{-0.24} and 7.2 +/- 0.5 MJ, respectively. We also investigated and characterized the two recently reported warm Jupiters TOI-1836b and TOI-5076b, which we independently detected in SOPHIE RVs.

Additionally, we study the planetary candidates TOI-4081.01 and TOI-4168.01. For TOI-4081.01, despite our detection in radial velocities, we cannot rule out perturbation by a blended eclipsing binary and thus exercise caution regarding its planetary nature. On the other hand, we identify TOI-4168.01 as a firm false positive.

Finally, we highlight interesting characteristics of these new planetary systems. The transits of TOI-2295b are highly grazing, with an impact parameter of 1.056+0.063−0.043. TOI-2537b, in turn, is a temperate Jupiter with an effective temperature of 307+/-15 K and can serve as a valuable low-irradiation control for models of hot Jupiter inflation anomalies.

We also detected significant transit timing variations (TTVs) for TOI-2537b, which are likely caused by gravitational interactions with the outer planet TOI-2537c. Finally, TOI-5110b stands out due to its orbital eccentricity of 0.75+/- 0.03, one of the highest planetary eccentricities discovered thus far.

N. Heidari, G. H’ebrard, E. Martioli, J. D. Eastman, J.M. Jackson, X. Delfosse, A. Jord’an, A.C.M. Correia, S. Sousa, D. Dragomir, T. Forveille, I. Boisse, S.A. Giacalone, R.F. D’iaz, R. Brahm, D. Almasian, J.M. Almenara, A. Bieryla, K. Barkaoui, D. Baker, S.C. C . Barros, X. Bonfils, A. Carmona, K.A. Collins, P. Cort’es-Zuleta, M. Deleuil, O.D.S. Demangeon, B. Edwards, J. Eberhardt, N. Espinoza, N. Eisner, D.L. Feliz, A.C. Frommer, A. Fukui, F. Grau, A.F. Gupta, N. Hara, M.J. Hobson, T. Henning, S.B. Howell, J.M. Jenkins, F. Kiefer, D.M. LaCourse, J. Laskar, N. Law, A.W. Mann, F. Murgas, C. Moutou, N. Narita, E. Palle, H.M. Relles, K. G. Stassun, J. Serrano Bell, R.P. Schwarz, G. Srdoc, P.A. Strøm, B. Safonov, P. Sarkis, M. Schlecker, M. Tala Pinto, J. Pepper, F.I. Rojas, J.D. Twicken, T. Trifonov, S. Villanueva Jr, C.N. Watkins, J.N. Winn, C. Ziegler

Comments: 46 pages, 21 figures, accepted for publication in A&A
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:2412.08527 [astro-ph.EP] (or arXiv:2412.08527v1 [astro-ph.EP] for this version)
https://doi.org/10.48550/arXiv.2412.08527
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Submission history
From: Neda Heidari
[v1] Wed, 11 Dec 2024 16:38:31 UTC (29,848 KB)
https://arxiv.org/abs/2412.08527
Astrobiology,