TY - JOUR
T1 - TOI-2379 b and TOI-2384 b
T2 - Two super-Jupiter mass planets transiting low-mass host stars
AU - Bryant, Edward M.
AU - Bayliss, Daniel
AU - Hartman, Joel D.
AU - Sedaghati, Elyar
AU - Hobson, Melissa J.
AU - Jordán, Andrés
AU - Brahm, Rafael
AU - Bakos, Gaspar
AU - Almenara, Jose Manuel
AU - Barkaoui, Khalid
AU - Bonfils, Xavier
AU - Cointepas, Marion
AU - Collins, Karen A.
AU - Dransfield, Georgina
AU - Evans, Phil
AU - Gillon, Michaël
AU - Jehin, Emmanuël
AU - Murgas, Felipe
AU - Pozuelos, Francisco J.
AU - Schwarz, Richard P.
AU - Timmermans, Mathilde
AU - Watkins, Cristilyn N.
AU - Wünsche, Anaël
AU - Butler, R. Paul
AU - Crane, Jeffrey D.
AU - Shectman, Steve
AU - Teske, Johanna K.
AU - Charbonneau, David
AU - Essack, Zahra
AU - Jenkins, Jon M.
AU - Lewis, Hannah M.
AU - Seager, Sara
AU - Ting, Eric B.
AU - Winn, Joshua N.
N1 - Publisher Copyright:
© 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2024/10/1
Y1 - 2024/10/1
N2 - Short-period gas giant planets have been shown to be significantly rarer for host stars less massive than the Sun. We report the discovery of two transiting giant planets - TOI-2379 b and TOI-2384 b - with low-mass (early M) host stars. Both planets were detected using Transiting Exoplanet Survey Satellite photometry and for both the transit signal was validated using ground-based photometric facilities. We confirm the planetary nature of these companions and measure their masses using radial velocity observations. We find that TOI-2379 b has an orbital period of 5.469 d and a mass and radius of 5.76 ±0.20 MJ and 1.046 ±0.023 RJ and TOI-2384 b has an orbital period of 2.136 d and a mass and radius of 1.966 ±0.059 MJ and 1.025 ±0.021 RJ. TOI-2379 b and TOI-2384 b have the highest and third highest planet-to-star mass ratios, respectively, out of all transiting exoplanets with a low-mass host star, placing them uniquely among the population of known exoplanets and making them highly important pieces of the puzzle for understanding the extremes of giant planet formation.
AB - Short-period gas giant planets have been shown to be significantly rarer for host stars less massive than the Sun. We report the discovery of two transiting giant planets - TOI-2379 b and TOI-2384 b - with low-mass (early M) host stars. Both planets were detected using Transiting Exoplanet Survey Satellite photometry and for both the transit signal was validated using ground-based photometric facilities. We confirm the planetary nature of these companions and measure their masses using radial velocity observations. We find that TOI-2379 b has an orbital period of 5.469 d and a mass and radius of 5.76 ±0.20 MJ and 1.046 ±0.023 RJ and TOI-2384 b has an orbital period of 2.136 d and a mass and radius of 1.966 ±0.059 MJ and 1.025 ±0.021 RJ. TOI-2379 b and TOI-2384 b have the highest and third highest planet-to-star mass ratios, respectively, out of all transiting exoplanets with a low-mass host star, placing them uniquely among the population of known exoplanets and making them highly important pieces of the puzzle for understanding the extremes of giant planet formation.
KW - planets and satellites: formation
KW - planets and satellites: gaseous planets
KW - planets and satellites: individual: TOI-2379 b
KW - planets and satellites: individual: TOI-2384 b
KW - stars: low-mass
UR - http://www.scopus.com/inward/record.url?scp=85204061222&partnerID=8YFLogxK
U2 - 10.1093/mnras/stae2034
DO - 10.1093/mnras/stae2034
M3 - Article
AN - SCOPUS:85204061222
SN - 0035-8711
VL - 533
SP - 3893
EP - 3906
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -