TOI-5126: A hot super-Neptune and warm Neptune pair discovered by <i>TESS</i> and <i>CHEOPS</i>

Fairnington, T.R.; Nabbie, E.; Huang, C.X.; Zhou, G.; Foo, O.; Millholland, S.; Wright, D.; Belinski, A.A.; Bieryla, A.; Ciardi, D.R.; Collins, K.A.; Collins, K.I.; Everett, M.; Howell, S.B.; Lissauer, J.J.; Lund, M.B.; Murgas, F.; Palle, E.; Quinn, S.N.; Relles, H.M.; Safonov, B.S.; Schwarz, R.P.; Scott, N.J.; Srdoc, G.; Ricker, G.; Vanderspek, R.; Seager, S.; Latham, D.W.; Winn, J.W.; Jenkins, J.M.; Boumay, L.G.; Shporer, A.; Ting, E.B.; Dragomiry, D.; Kunimoto, M.; Eisner, N.L.

Авторы: Fairnington Tyler R., Nabbie Emma, Huang Chelsea X., Zhou George, Foo Orion, Millholland Sarah, Wright Duncan, Belinski Alexandre A., Bieryla Allyson, Ciardi David R., Collins Karen A., Collins Kevin I., Everett Mark, Howell Steve B., Lissauer Jack J., Lund Michael B., Murgas Felipe, Palle Enric, Quinn Samuel N., Relles Howard M., Safonov Boris S., Schwarz Richard P., Scott Nicholas J., Srdoc Gregor, Ricker George, Vanderspek Roland, Seager Sara, Latham David W., Winn Joshua W., Jenkins Jon M., Boumay Luke G., Shporer Avi, Ting Eric B., Dragomiry Diana, Kunimoto Michelle, Eisner Nora L.
Журнал: Monthly Notices of the Royal Astronomical Society
Том: 527
Номер: 3
Год издания: 2024
Издательство: Oxford Journals, Oxford University Press
Местоположение издательства: Oxford, UK, England
Первая страница: 8768
Последняя страница: 8783
DOI: 10.1093/mnras/stad3036
Аннотация: We present the confirmation of a hot super-Neptune with an exterior Neptune companion orbiting a bright (V = 10.1 mag) F-dwarf identified by the Transiting Exoplanet Survey Satellite (TESS). The two planets, observed in sectors 45, 46 and 48 of the TESS extended mission, are 4.74+0.16−0.14R⊕ and 3.86+0.17−0.16R⊕ with 5.4588385+0.0000070−0.0000072 d and 17.8999+0.0018−0.0013 d orbital periods, respectively. We also obtained precise space based photometric follow-up of the system with ESA's CHaracterising ExOplanets Satellite (CHEOPS) to constrain the radius and ephemeris of TOI-5126 b. TOI-5126 b is located in the 'hot Neptune Desert' and is an ideal candidate for follow-up transmission spectroscopy due to its high predicted equilibrium temperature (Teq= 1442+46−40 K) implying a cloud-free atmosphere. TOI-5126 c is a warm Neptune (Teq= 971+31−27 K) also suitable for follow-up. Tentative transit timing variations (TTVs) have also been identified in analysis, suggesting the presence of at least one additional planet, however this signal may be caused by spot-crossing events, necessitating further precise photometric follow-up to confirm these signals.
Добавил в систему: Сафонов Борис Сергеевич

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TOI-5126: A hot super-Neptune and warm Neptune pair discovered by <i>TESS</i> and <i>CHEOPS</i>статья