TY - JOUR
T1 - PLATOSpec first results
T2 - Three new transiting warm Jupiters from the WINE survey, TIC 147027702, TIC 245076932, and TIC 87422071
AU - Gajdoš, Pavol
AU - Brahm, Rafael
AU - Acuña-Aguirre, Lorena
AU - Jones, Matías I.
AU - Salinas, Helem
AU - Lipták, Jozef
AU - Jordán, Andrés
AU - Henning, Thomas
AU - Srba, Jiří
AU - Žd’árská, Eva
AU - Balkóová, Zuzana
AU - Vítková, Michaela
AU - Janík, Jan
AU - Škoda, Petr
AU - Žák, Jiří
AU - Mekarnia, Djamel
AU - Suarez, Olga
AU - Abe, Lyu
AU - Beltrame, Matteo
AU - Triaud, Amaury H. M. J.
AU - Guillot, Tristan
AU - Collins, Karen A.
AU - Barkaoui, Khalid
AU - Boyle, Gavin
AU - Suc, Vincent
AU - Antonucci, Luca
AU - Pinto, Marcelo Tala
AU - Vostretcova, Elizaveta
AU - Eberhardt, Jan
AU - Espinoza, Néstor
AU - Mireles, Ismael
AU - Pintr, Pavel
AU - Rojas, Felipe I.
AU - Schaffenroth, Veronika
AU - Vanzi, Leo
AU - Kabáth, Petr
PY - 2026/4/9
Y1 - 2026/4/9
N2 - We report the discovery and characterisation of three transiting warm Jupiters: TIC 147027702b, TIC 245076932b, and TIC 87422071b. These systems were initially identified as transiting candidates using light curves generated from the full-frame images of the TESS mission. We confirmed the planetary nature of these objects with ground-based spectroscopic follow-up observations using FEROS and the new PLATOSpec spectrograph attached to the ESO 1.52 m telescope at the La Silla Observatory, and with ground-based photometric observations of the Observatoire Moana, Las Cumbres Observatory Global Telescope and ASTEP. From a global fit to the photometry and radial velocities, we determine that the planet TIC 147027702b has a low-eccentricity orbit (e = 0.13 ± 0.05) with a period of 44.4 days, a mass of 1.09−0.13+0.07 MJ, and a radius of 0.98 ± 0.06 RJ. TIC 245076932b has a moderately low mass of 0.51 ± 0.05 MJ, a radius of 0.97 ± 0.05 RJ, and an eccentric orbit (e = 0.43 ± 0.02) with a period of 21.6 days. TIC 87422071b has a mass of 1.29 ± 0.10 MJ, a radius of 0.97 ± 0.08 RJ, and a slightly eccentric orbit (e = 0.12 ± 0.07) with a period of 11.3 days. These well-characterised warm Jupiters expand the currently limited sample of similar gas giants and provide valuable benchmarks for testing models of giant-planet formation, migration, and tidal evolution.
AB - We report the discovery and characterisation of three transiting warm Jupiters: TIC 147027702b, TIC 245076932b, and TIC 87422071b. These systems were initially identified as transiting candidates using light curves generated from the full-frame images of the TESS mission. We confirmed the planetary nature of these objects with ground-based spectroscopic follow-up observations using FEROS and the new PLATOSpec spectrograph attached to the ESO 1.52 m telescope at the La Silla Observatory, and with ground-based photometric observations of the Observatoire Moana, Las Cumbres Observatory Global Telescope and ASTEP. From a global fit to the photometry and radial velocities, we determine that the planet TIC 147027702b has a low-eccentricity orbit (e = 0.13 ± 0.05) with a period of 44.4 days, a mass of 1.09−0.13+0.07 MJ, and a radius of 0.98 ± 0.06 RJ. TIC 245076932b has a moderately low mass of 0.51 ± 0.05 MJ, a radius of 0.97 ± 0.05 RJ, and an eccentric orbit (e = 0.43 ± 0.02) with a period of 21.6 days. TIC 87422071b has a mass of 1.29 ± 0.10 MJ, a radius of 0.97 ± 0.08 RJ, and a slightly eccentric orbit (e = 0.12 ± 0.07) with a period of 11.3 days. These well-characterised warm Jupiters expand the currently limited sample of similar gas giants and provide valuable benchmarks for testing models of giant-planet formation, migration, and tidal evolution.
KW - techniques: photometric
KW - techniques: radial velocities
KW - planets and satellites: detection
KW - planets and satellites: gaseous planets
KW - planetary systems
U2 - 10.1051/0004-6361/202558698
DO - 10.1051/0004-6361/202558698
M3 - Article
SN - 0004-6361
VL - 708
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A189
ER -