Brahm, Rafael; Ulmer-Moll, Solène; Hobson, Melissa J.; Jordán, Andrés; Henning, Thomas; Trifonov, Trifon; Jones, Matías I.; Schlecker, Martin; Espinoza, Nestor; Rojas, Felipe I.; Torres, Pascal; Sarkis, Paula; Tala, Marcelo; Eberhardt, Jan; Kossakowski, Diana; Muñoz, Diego J.; Hartman, Joel D.; Boyle, Gavin; Suc, Vincent; Bouchy, François; ... (2023). Three Long-period Transiting Giant Planets from TESS*. The astronomical journal, 165(6), p. 227. American Astronomical Society 10.3847/1538-3881/accadd
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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: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences > Theoretical Astrophysics and Planetary Science (TAPS) 08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute |
UniBE Contributor: |
Ulmer-Moll, Solène Chloé, Mordasini, Christoph |
Subjects: |
500 Science > 530 Physics 500 Science > 520 Astronomy 600 Technology > 620 Engineering |
ISSN: |
0004-6256 |
Publisher: |
American Astronomical Society |
Language: |
English |
Submitter: |
Dora Ursula Zimmerer |
Date Deposited: |
27 Oct 2023 07:44 |
Last Modified: |
27 Oct 2023 07:44 |
Publisher DOI: |
10.3847/1538-3881/accadd |
BORIS DOI: |
10.48350/187488 |
URI: |
https://boris.unibe.ch/id/eprint/187488 |
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