Three Long-period Transiting Giant Planets from TESS*

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

doi:10.3847/1538-3881/accadd

Three Long-period Transiting Giant Planets from TESS*

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

^*Corresponding author for this work

Physics and Astronomy

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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 M_P = 0.30 ± 0.04 M_J, a radius of R_P = 1.00 ± 0.02 R_J, 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 M_P = 5.98 ± 0.20 M_J, a radius of R_P = 1.00 ± 0.01 R_J, 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 M_P = 3.50 ± 0.10 M_J, a radius of R_P = 1.08 ± 0.03 R_J, 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.

Original language	English
Article number	227
Number of pages	17
Journal	The Astronomical Journal
Volume	165
Issue number	6
Early online date	4 May 2023
DOIs	https://doi.org/10.3847/1538-3881/accadd
Publication status	Published - 1 Jun 2023

Bibliographical note

*Based on observations collected at the European Organization for Astronomical Research in the Southern Hemisphere under ESO programmes 0104.C-0413, 106.21ER.001, and 108.22A8.001 and MPG programmes 0103.A-9008 and 0104.A-9007

Keywords

Exoplanets
Extrasolar gaseous giant planets
Radial velocity
Transit photometry

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Brahm, R., Ulmer-Moll, S., Hobson, M. J., Jordán, A., Henning, T., Trifonov, T., Jones, M. I., Schlecker, M., Espinoza, N., Rojas, F. I., Torres, P., Sarkis, P., Tala, M., Eberhardt, J., Kossakowski, D., Muñoz, D. J., Hartman, J. D., Boyle, G., Suc, V., ... Murgas, F. (2023). Three Long-period Transiting Giant Planets from TESS*. The Astronomical Journal, 165(6), Article 227. https://doi.org/10.3847/1538-3881/accadd

@article{913ad949564b44c088f69c85f2b1b8e1,

title = "Three Long-period Transiting Giant Planets from TESS*",

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.",

keywords = "Exoplanets, Extrasolar gaseous giant planets, Radial velocity, Transit photometry",

author = "Rafael Brahm and Sol{\`e}ne Ulmer-Moll and Hobson, {Melissa J.} and Andr{\'e}s Jord{\'a}n and Thomas Henning and Trifon Trifonov and Jones, {Mat{\'i}as I.} and Martin Schlecker and Nestor Espinoza and Rojas, {Felipe I.} and Pascal Torres and Paula Sarkis and Marcelo Tala and Jan Eberhardt and Diana Kossakowski and Mu{\~n}oz, {Diego J.} and Hartman, {Joel D.} and Gavin Boyle and Vincent Suc and Fran{\c c}ois Bouchy and Adrien Deline and Guillaume Chaverot and Nolan Grieves and Monika Lendl and Olga Suarez and Tristan Guillot and Triaud, {Amaury H. M. J.} and Nicolas Crouzet and Georgina Dransfield and Ryan Cloutier and Khalid Barkaoui and Schwarz, {Rick P.} and Chris Stockdale and Mallory Harris and Ismael Mireles and Phil Evans and Mann, {Andrew W.} and Carl Ziegler and Diana Dragomir and Steven Villanueva and Christoph Mordasini and George Ricker and Roland Vanderspek and Latham, {David W.} and Sara Seager and Winn, {Joshua N.} and Jenkins, {Jon M.} and Michael Vezie and Allison Youngblood and Tansu Daylan and Collins, {Karen A.} and Caldwell, {Douglas A.} and Ciardi, {David R.} and Enric Palle and Felipe Murgas",

note = "*Based on observations collected at the European Organization for Astronomical Research in the Southern Hemisphere under ESO programmes 0104.C-0413, 106.21ER.001, and 108.22A8.001 and MPG programmes 0103.A-9008 and 0104.A-9007",

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doi = "10.3847/1538-3881/accadd",

language = "English",

volume = "165",

journal = "The Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

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Brahm, R, Ulmer-Moll, S, Hobson, MJ, Jordán, A, Henning, T, Trifonov, T, Jones, MI, Schlecker, M, Espinoza, N, Rojas, FI, Torres, P, Sarkis, P, Tala, M, Eberhardt, J, Kossakowski, D, Muñoz, DJ, Hartman, JD, Boyle, G, Suc, V, Bouchy, F, Deline, A, Chaverot, G, Grieves, N, Lendl, M, Suarez, O, Guillot, T, Triaud, AHMJ, Crouzet, N, Dransfield, G, Cloutier, R, Barkaoui, K, Schwarz, RP, Stockdale, C, Harris, M, Mireles, I, Evans, P, Mann, AW, Ziegler, C, Dragomir, D, Villanueva, S, Mordasini, C, Ricker, G, Vanderspek, R, Latham, DW, Seager, S, Winn, JN, Jenkins, JM, Vezie, M, Youngblood, A, Daylan, T, Collins, KA, Caldwell, DA, Ciardi, DR, Palle, E & Murgas, F 2023, 'Three Long-period Transiting Giant Planets from TESS*', The Astronomical Journal, vol. 165, no. 6, 227. https://doi.org/10.3847/1538-3881/accadd

TY - JOUR

T1 - Three Long-period Transiting Giant Planets from TESS*

AU - Brahm, Rafael

AU - Ulmer-Moll, Solène

AU - Hobson, Melissa J.

AU - Jordán, Andrés

AU - Henning, Thomas

AU - Trifonov, Trifon

AU - Jones, Matías I.

AU - Schlecker, Martin

AU - Espinoza, Nestor

AU - Rojas, Felipe I.

AU - Torres, Pascal

AU - Sarkis, Paula

AU - Tala, Marcelo

AU - Eberhardt, Jan

AU - Kossakowski, Diana

AU - Muñoz, Diego J.

AU - Hartman, Joel D.

AU - Boyle, Gavin

AU - Suc, Vincent

AU - Bouchy, François

AU - Deline, Adrien

AU - Chaverot, Guillaume

AU - Grieves, Nolan

AU - Lendl, Monika

AU - Suarez, Olga

AU - Guillot, Tristan

AU - Triaud, Amaury H. M. J.

AU - Crouzet, Nicolas

AU - Dransfield, Georgina

AU - Cloutier, Ryan

AU - Barkaoui, Khalid

AU - Schwarz, Rick P.

AU - Stockdale, Chris

AU - Harris, Mallory

AU - Mireles, Ismael

AU - Evans, Phil

AU - Mann, Andrew W.

AU - Ziegler, Carl

AU - Dragomir, Diana

AU - Villanueva, Steven

AU - Mordasini, Christoph

AU - Ricker, George

AU - Vanderspek, Roland

AU - Latham, David W.

AU - Seager, Sara

AU - Winn, Joshua N.

AU - Jenkins, Jon M.

AU - Vezie, Michael

AU - Youngblood, Allison

AU - Daylan, Tansu

AU - Collins, Karen A.

AU - Caldwell, Douglas A.

AU - Ciardi, David R.

AU - Palle, Enric

AU - Murgas, Felipe

N1 - *Based on observations collected at the European Organization for Astronomical Research in the Southern Hemisphere under ESO programmes 0104.C-0413, 106.21ER.001, and 108.22A8.001 and MPG programmes 0103.A-9008 and 0104.A-9007

PY - 2023/6/1

Y1 - 2023/6/1

N2 - 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.

AB - 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.

KW - Exoplanets

KW - Extrasolar gaseous giant planets

KW - Radial velocity

KW - Transit photometry

U2 - 10.3847/1538-3881/accadd

DO - 10.3847/1538-3881/accadd

M3 - Article

SN - 0004-6256

VL - 165

JO - The Astronomical Journal

JF - The Astronomical Journal

IS - 6

M1 - 227

ER -

Three Long-period Transiting Giant Planets from TESS*

Abstract

Bibliographical note

Keywords

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