Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographs

Knudstrup, E.; Serrano, L.M.; Gandolfi, D.; Albrecht, S.H.; Cochran, W.D.; Endl, M.; MacQueen, P.; Tronsgaard, R.; Bieryla, A.; Buchhave, L.A.; Stassun, K.; Collins, K.A.; Nowak, G.; Deeg, H.J.; Barkaoui, K.; Safonov, B.S.; Strakhov, I.A.; Belinski, A.A.; Twicken, J.D.; Jenkins, J.M.; Howard, A.W.; Isaacson, H.; Winn, J.N.; Collins, K.I.; Conti, D.M.; Furesz, G.; Gan, T.; Kielkopf, J.F.; Massey, B.; Murgas, F.; Murphy, L.G.; Palle, E.; Quinn, S.N.; Reed, P.A.; Ricker, G.R.; Seager, S.; Shiao, B.; Schwarz, R.P.; Srdoc, G.; Watanabe, D.

Авторы: Knudstrup Emil, Serrano Luisa M., Gandolfi Davide, Albrecht Simon H., Cochran William D., Endl Michael, MacQueen Phillip, Tronsgaard René, Bieryla Allyson, Buchhave Lars A., Stassun Keivan, Collins Karen A., Nowak Grzegorz, Deeg Hans J., Barkaoui Khalid, Safonov Boris S., Strakhov Ivan A., Belinski Alexandre A., Twicken Joseph D., Jenkins Jon M., Howard Andrew W., Isaacson Howard, Winn Joshua N., Collins Kevin I., Conti Dennis M., Furesz Gabor, Gan Tianjun, Kielkopf John F., Massey Bob, Murgas Felipe, Murphy Lauren G., Palle Enric, Quinn Samuel N., Reed Phillip A., Ricker George R., Seager Sara, Shiao Bernie, Schwarz Richard P., Srdoc Gregor, Watanabe David
Журнал: Astronomy and Astrophysics
Том: 667
Год издания: 2022
Издательство: Springer Verlag
Местоположение издательства: Germany
Первая страница: A22
DOI: 10.1051/0004-6361/202243656
Аннотация: We report the confirmation and characterisation of TOI-1820 b, TOI-2025 b, and TOI-2158 b, three Jupiter-sized planets on short-period orbits around G-type stars detected by TESS. Through our ground-based efforts using the FIES and Tull spectrographs, we have confirmed these planets and characterised their orbits, and find periods of around 4.9 d, 8.9 d, and 8.6 d for TOI-1820 b, TOI-2025 b, and TOI-2158 b, respectively. The sizes of the planets range from 0.96 to 1.14 Jupiter radii, and their masses are in the range from 0.8 to 4.4 Jupiter masses. For two of the systems, namely TOI-2025 and TOI-2158, we see a long-term trend in the radial velocities, indicating the presence of an outer companion in each of the two systems. For TOI-2025 we furthermore find the star to be well aligned with the orbit, with a projected obliquity of 9−31+33°. As these planets are all found in relatively bright systems (V ~ 10.9-11.6 mag), they are well suited for further studies, which could help shed light on the formation and migration of hot and warm Jupiters.
Добавил в систему: Белинский Александр Александрович

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Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographsстатья