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

Bibcode
2022A&A...667A..22K
DOI
10.1051/0004-6361/202243656
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
Referencia bibliográfica

Astronomy and Astrophysics

Fecha de publicación:
11
2022
Revista
Astronomy and Astrophysics
Número de autores
40
Número de autores del IAC
5
Número de citas
9
Número de citas referidas
7
Descripción
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.
Proyectos relacionados
Helio and Asteroseismologia
Sismología Solar y Estelar y Búsqueda de Exoplanetas
Los objetivos genéricos de este Proyecto son: 1) el estudio de la estructura y dinámica del interior solar, 2) la extensión de dicho estudio al caso de otras estrellas, 3) la búsqueda y caracterización de planetas extrasolares por métodos fotométricos (principalmente mediante el método de tránsitos) y espectroscópico (variaciones en la velocidad
Savita
Mathur
En ejecución
Image withthe projects' name
Exoplanetas y Astrobiología
La búsqueda de vida en el Universo se ha visto impulsada por los recientes descubrimientos de planetas alrededor de otras estrellas (los llamados exoplanetas), convirtiéndose en uno de los campos más activos dentro de la Astrofísica moderna. En los últimos años los descubrimientos cada vez más numerosos de nuevos exoplanetas y los últimos avances
Enric
Pallé Bago
En ejecución
Tipo
Con árbitro
Física estelar e interestelar (FEEI)
Sistema Solar y Sistemas Planetarios (SEYSS)
Técnicas

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