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Three warm Jupiters orbiting TOI-6628, TOI-3837, and TOI-5027 and one sub-Saturn orbiting TOI-2328

We report the discovery and characterization of three new transiting giant planets orbiting TOI-6628, TOI-3837, and TOI-5027 and one new warm sub-Saturn orbiting TOI-2328, whose transits events were detected in the light curves of the Transiting Exoplanet Survey Satell(TESS) space mission. By combin...

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Main Authors: Tala, Marcelo (Author) , Jordán, Andrés (Author) , Acuña, Lorena (Author) , Jones, Matías (Author) , Brahm, Rafael (Author) , Reinarz, Yared (Author) , Eberhardt, Jan (Author) , Espinoza, Néstor (Author) , Henning, Thomas (Author) , Hobson, Melissa (Author) , Rojas, Felipe (Author) , Schlecker, Martin (Author) , Trifonov, Trifon (Author) , Bakos, Gaspar (Author) , Boyle, Gavin (Author) , Csubry, Zoltan (Author) , Hartmann, Joel (Author) , Knepper, Benjamin (Author) , Kreidberg, Laura (Author) , Suc, Vincent (Author) , Teske, Johanna (Author) , Butler, Robert Paul (Author) , Crane, Jeffrey (Author) , Schectman, Steve (Author) , Thompson, Ian (Author) , Osip, Dave (Author) , Ricker, George (Author) , Collins, Karen A. (Author) , Watkins, Cristilyn N. (Author) , Bieryla, Allyson (Author) , Stockdale, Chris (Author) , Wang, Gavin (Author) , Zambelli, Roberto (Author) , Seager, Sara (Author) , Winn, Joshua (Author) , Rose, Mark E. (Author) , Rice, Malena (Author) , Essack, Zahra (Author)
Format: Article (Journal)
Language:English
Published: February 2025
In: Astronomy and astrophysics
Year: 2025, Volume: 694, Pages: 1-19
ISSN:1432-0746
DOI:10.1051/0004-6361/202452517
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1051/0004-6361/202452517
Verlag, kostenfrei, Volltext: https://www.aanda.org/articles/aa/abs/2025/02/aa52517-24/aa52517-24.html
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Author Notes:Marcelo Tala Pinto, Andrés Jordán, Lorena Acuña, Matías Jones, Rafael Brahm, Yared Reinarz, Jan Eberhardt, Néstor Espinoza, Thomas Henning, Melissa Hobson, Felipe Rojas, Martin Schlecker, Trifon Trifonov, Gaspar Bakos, Gavin Boyle, Zoltan Csubry, Joel Hartmann, Benjamin Knepper, Laura Kreidberg, Vincent Suc, Johanna Teske, Robert Paul Butler, Jeffrey Crane, Steve Schectman, Ian Thompson, Dave Osip, George Ricker, Karen A. Collins, Cristilyn N. Watkins, Allyson Bieryla, Chris Stockdale, Gavin Wang, Roberto Zambelli, Sara Seager, Joshua Winn, Mark E. Rose, Malena Rice, and Zahra Essack

MARC

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245 1 0 |a Three warm Jupiters orbiting TOI-6628, TOI-3837, and TOI-5027 and one sub-Saturn orbiting TOI-2328  |c Marcelo Tala Pinto, Andrés Jordán, Lorena Acuña, Matías Jones, Rafael Brahm, Yared Reinarz, Jan Eberhardt, Néstor Espinoza, Thomas Henning, Melissa Hobson, Felipe Rojas, Martin Schlecker, Trifon Trifonov, Gaspar Bakos, Gavin Boyle, Zoltan Csubry, Joel Hartmann, Benjamin Knepper, Laura Kreidberg, Vincent Suc, Johanna Teske, Robert Paul Butler, Jeffrey Crane, Steve Schectman, Ian Thompson, Dave Osip, George Ricker, Karen A. Collins, Cristilyn N. Watkins, Allyson Bieryla, Chris Stockdale, Gavin Wang, Roberto Zambelli, Sara Seager, Joshua Winn, Mark E. Rose, Malena Rice, and Zahra Essack 
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520 |a We report the discovery and characterization of three new transiting giant planets orbiting TOI-6628, TOI-3837, and TOI-5027 and one new warm sub-Saturn orbiting TOI-2328, whose transits events were detected in the light curves of the Transiting Exoplanet Survey Satell(TESS) space mission. By combining TESS light curves with ground-based photometric and spectroscopic follow-up observations, we confirm the planetary nature of the observed transits and radial velocity variations. TOI-6628 b has a mass of 0.74±0.06 MJ and a radius of 0.98+0.06 −0.05 RJ and orbits a metal-rich star with a period of 18.18424±0.00001 days and an eccentricity of 0.670+0.015 −0.016, making it one of the most eccentric orbits of all known warm giants. TOI-3837 b has a mass of 0.59±0.05 MJ and a radius of 0.97+0.05 −0.06 RJ and orbits its host star every 11.88865±0.00003 days, with a moderate eccentricity of 0.221+0.042 −0.046. With a mass of 2.02±0.13 MJ and a radius of 0.96+0.05 −0.06 RJ , TOI-5027 b orbits its host star in an eccentric orbit with e = 0.385+0.025 −0.026 every 10.24368±0.00001 days. TOI-2328 b is a Saturn-like planet with a mass of 0.16±0.02 MJ and a radius of 0.89+0.04 −0.05 RJ ; it orbits its host star in a nearly circular orbit with e = 0.057+0.046 −0.029 at a period of 17.10197±0.00001 days. All four planets have orbital periods above ten days, and our planet’s interior structure models are consistent with a rocky-icy core with an H/He envelope, providing evidence supporting the core-accretion model of planet formation for this kind of planet. 
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