Three Long-period Transiting Giant Planets from TESS

Brahm, Rafael and Ulmer-Moll, Solène and Hobson, Melissa J. and Jordán, Andrés and Henning, Thomas and Trifonov, Trifon and Jones, Matías I. and Schlecker, Martin and Espinoza, Nestor and Rojas, Felipe I. and Torres, Pascal and Sarkis, Paula and Tala, Marcelo and Eberhardt, Jan and Kossakowski, Diana and Muñoz, Diego J. and Hartman, Joel D. and Boyle, Gavin and Suc, Vincent and Bouchy, François and Deline, Adrien and Chaverot, Guillaume and Grieves, Nolan and Lendl, Monika and Suarez, Olga and Guillot, Tristan and Triaud, Amaury H. M. J. and Crouzet, Nicolas and Dransfield, Georgina and Cloutier, Ryan and Barkaoui, Khalid and Schwarz, Rick P. and Stockdale, Chris and Harris, Mallory and Mireles, Ismael and Evans, Phil and Mann, Andrew W. and Ziegler, Carl and Dragomir, Diana and Villanueva, Steven and Mordasini, Christoph and Ricker, George and Vanderspek, Roland and Latham, David W. and Seager, Sara and Winn, Joshua N. and Jenkins, Jon M. and Vezie, Michael and Youngblood, Allison and Daylan, Tansu and Collins, Karen A. and Caldwell, Douglas A. and Ciardi, David R. and Palle, Enric and Murgas, Felipe (2023) Three Long-period Transiting Giant Planets from TESS. The Astronomical Journal, 165 (6). p. 227. ISSN 0004-6256

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Abstract

We report the discovery and orbital characterization of three new transiting warm giant planets. These systems were initially identified as presenting single-transit events in the light curves generated from the full-frame images of the Transiting Exoplanet Survey Satellite. Follow-up radial velocity measurements and additional light curves were used to determine the orbital periods and confirm the planetary nature of the candidates. The planets orbit slightly metal-rich late F- and early G-type stars. We find that TOI 4406b has a mass of MP = 0.30 ± 0.04 MJ, a radius of RP = 1.00 ± 0.02 RJ, and a low-eccentricity orbit (e = 0.15 ± 0.05) with a period of P = 30.08364 ±0.00005 days. TOI 2338b has a mass of MP = 5.98 ± 0.20 MJ, a radius of RP = 1.00 ± 0.01 RJ, and a highly eccentric orbit (e = 0.676 ± 0.002) with a period of P = 22.65398 ± 0.00002 days. Finally, TOI 2589b has a mass of MP = 3.50 ± 0.10 MJ, a radius of RP = 1.08 ± 0.03 RJ, and an eccentric orbit (e = 0.522 ± 0.006) with a period of P = 61.6277 ± 0.0002 days. TOI 4406b and TOI 2338b are enriched in metals compared to their host stars, while the structure of TOI 2589b is consistent with having similar metal enrichment to its host star.

Item Type: Article
Subjects: European Repository > Physics and Astronomy
Depositing User: Managing Editor
Date Deposited: 14 Nov 2023 03:49
Last Modified: 14 Nov 2023 03:49
URI: http://go7publish.com/id/eprint/3659

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