PLATOSpec's first results: Three new transiting warm Jupiters from the WINE survey TIC 147027702, TIC 245076932 and TIC 87422071
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arXiv
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| Format: | Preprint |
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2026
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| author | Gajdoš, Pavol Brahm, Rafael Acuña-Aguirre, Lorena Jones, Matías I. Salinas, Helem Lipták, Jozef Jordán, Andrés Henning, Thomas Srba, Jiří Žďárská, Eva Balkóová, Zuzana Vítková, Michaela Janík, Jan Škoda, Petr Žák, Jiří Mekarnia, Djamel Suarez, Olga Abe, Lyu Beltrame, Matteo Triaud, Amaury H. M. J. Guillot, Tristan Collins, Karen A. Barkaoui, Khalid Boyle, Gavin Suc, Vincent Antonucci, Luca Pinto, Marcelo Tala Vostretcova, Elizaveta Eberhardt, Jan Espinoza, Néstor Mireles, Ismael Pintr, Pavel Rojas, Felipe I. Schaffenroth, Veronika Vanzi, Leo Kabáth, Petr |
| author_facet | Gajdoš, Pavol Brahm, Rafael Acuña-Aguirre, Lorena Jones, Matías I. Salinas, Helem Lipták, Jozef Jordán, Andrés Henning, Thomas Srba, Jiří Žďárská, Eva Balkóová, Zuzana Vítková, Michaela Janík, Jan Škoda, Petr Žák, Jiří Mekarnia, Djamel Suarez, Olga Abe, Lyu Beltrame, Matteo Triaud, Amaury H. M. J. Guillot, Tristan Collins, Karen A. Barkaoui, Khalid Boyle, Gavin Suc, Vincent Antonucci, Luca Pinto, Marcelo Tala Vostretcova, Elizaveta Eberhardt, Jan Espinoza, Néstor Mireles, Ismael Pintr, Pavel Rojas, Felipe I. Schaffenroth, Veronika Vanzi, Leo Kabáth, Petr |
| contents | 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-eccentric orbit ($e = 0.13 \pm 0.05$) with a period of 44.4 days and has a mass of $1.09^{+0.07}_{-0.13}$ M$_J$ and a radius of $0.98 \pm 0.06$ R$_J$. TIC 245076932b has a moderately low mass of $0.51 \pm 0.05$ M$_J$, a radius of $0.97 \pm 0.05$ R$_J$, and an eccentric orbit ($e = 0.43 \pm 0.02$) with a period of 21.6 days. TIC 87422071b has a mass of $1.29 \pm 0.10$ M$_J$, a radius of $0.97 \pm 0.08$ R$_J$, and has a slightly eccentric orbit ($e = 0.12 \pm 0.07$) 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_20654 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | PLATOSpec's first results: Three new transiting warm Jupiters from the WINE survey TIC 147027702, TIC 245076932 and TIC 87422071 Gajdoš, Pavol Brahm, Rafael Acuña-Aguirre, Lorena Jones, Matías I. Salinas, Helem Lipták, Jozef Jordán, Andrés Henning, Thomas Srba, Jiří Žďárská, Eva Balkóová, Zuzana Vítková, Michaela Janík, Jan Škoda, Petr Žák, Jiří Mekarnia, Djamel Suarez, Olga Abe, Lyu Beltrame, Matteo Triaud, Amaury H. M. J. Guillot, Tristan Collins, Karen A. Barkaoui, Khalid Boyle, Gavin Suc, Vincent Antonucci, Luca Pinto, Marcelo Tala Vostretcova, Elizaveta Eberhardt, Jan Espinoza, Néstor Mireles, Ismael Pintr, Pavel Rojas, Felipe I. Schaffenroth, Veronika Vanzi, Leo Kabáth, Petr Earth and Planetary Astrophysics 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-eccentric orbit ($e = 0.13 \pm 0.05$) with a period of 44.4 days and has a mass of $1.09^{+0.07}_{-0.13}$ M$_J$ and a radius of $0.98 \pm 0.06$ R$_J$. TIC 245076932b has a moderately low mass of $0.51 \pm 0.05$ M$_J$, a radius of $0.97 \pm 0.05$ R$_J$, and an eccentric orbit ($e = 0.43 \pm 0.02$) with a period of 21.6 days. TIC 87422071b has a mass of $1.29 \pm 0.10$ M$_J$, a radius of $0.97 \pm 0.08$ R$_J$, and has a slightly eccentric orbit ($e = 0.12 \pm 0.07$) 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. |
| title | PLATOSpec's first results: Three new transiting warm Jupiters from the WINE survey TIC 147027702, TIC 245076932 and TIC 87422071 |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2602.20654 |