TY - JOUR
T1 - A long-period transiting substellar companion in the super-Jupiters to brown dwarfs mass regime and a prototypical warm-Jupiter detected by TESS
AU - Jones, Matías I.
AU - Reinarz, Yared
AU - Brahm, Rafael
AU - Tala Pinto, Marcelo
AU - Eberhardt, Jan
AU - Rojas, Felipe
AU - Triaud, Amaury H.M.J.
AU - Gupta, Arvind F.
AU - Ziegler, Carl
AU - Hobson, Melissa J.
AU - Jordán, Andrés
AU - Henning, Thomas
AU - Trifonov, Trifon
AU - Schlecker, Martin
AU - Espinoza, Néstor
AU - Torres-Miranda, Pascal
AU - Sarkis, Paula
AU - Ulmer-Moll, Solène
AU - Lendl, Monika
AU - Uzundag, Murat
AU - Moyano, Maximiliano
AU - Hesse, Katharine
AU - Caldwell, Douglas A.
AU - Shporer, Avi
AU - Lund, Michael B.
AU - Jenkins, Jon M.
AU - Seager, Sara
AU - Winn, Joshua N.
AU - Ricker, George R.
AU - Burke, Christopher J.
AU - Figueira, Pedro
AU - Psaridi, Angelica
AU - Al Moulla, Khaled
AU - Mounzer, Dany
AU - Standing, Matthew R.
AU - Martin, David V.
AU - Dransfield, Georgina
AU - Baycroft, Thomas
AU - Dragomir, Diana
AU - Boyle, Gavin
AU - Suc, Vincent
AU - Mann, Andrew W.
AU - Timmermans, Mathilde
AU - Ducrot, Elsa
AU - Hooton, Matthew J.
AU - Zuñiga-Fernández, Sebastián
AU - Sebastian, Daniel
AU - Gillon, Michael
AU - Queloz, Didier
AU - Carson, Joe
AU - Lissauer, Jack J.
N1 - Publisher Copyright:
© 2024 EDP Sciences. All rights reserved.
PY - 2024/3/1
Y1 - 2024/3/1
N2 - We report on the confirmation and follow-up characterization of two long-period transiting substellar companions on low-eccentricity orbits around TIC 4672985 and TOI-2529, whose transit events were detected by the TESS space mission. Ground-based photometric and spectroscopic follow-up from different facilities, confirmed the substellar nature of TIC 4672985 b, a massive gas giant in the transition between the super-Jupiters and brown dwarfs mass regime. From the joint analysis we derived the following orbital parameters: P = 69.0480-0.0005+0.0004 d, Mp = 12.74-1.01+1.01 Mj, Rp = 1.026-0.067+0.065 Rj and e = 0.018-0.004+0.004. In addition, the RV time series revealed a significant trend at the ~350 m s-1 yr-1 level, which is indicative of the presence of a massive outer companion in the system. TIC 4672985 b is a unique example of a transiting substellar companion with a mass above the deuterium-burning limit, located beyond 0.1 AU and in a nearly circular orbit. These planetary properties are difficult to reproduce from canonical planet formation and evolution models. For TOI-2529 b, we obtained the following orbital parameters: P = 64.5949-0.0003+0.0003 d, Mp = 2.340-0.195+0.197 Mj, Rp = 1.030-0.050+0.050 Rj and e = 0.021-0.015+0.024, making this object a new example of a growing population of transiting warm giant planets.
AB - We report on the confirmation and follow-up characterization of two long-period transiting substellar companions on low-eccentricity orbits around TIC 4672985 and TOI-2529, whose transit events were detected by the TESS space mission. Ground-based photometric and spectroscopic follow-up from different facilities, confirmed the substellar nature of TIC 4672985 b, a massive gas giant in the transition between the super-Jupiters and brown dwarfs mass regime. From the joint analysis we derived the following orbital parameters: P = 69.0480-0.0005+0.0004 d, Mp = 12.74-1.01+1.01 Mj, Rp = 1.026-0.067+0.065 Rj and e = 0.018-0.004+0.004. In addition, the RV time series revealed a significant trend at the ~350 m s-1 yr-1 level, which is indicative of the presence of a massive outer companion in the system. TIC 4672985 b is a unique example of a transiting substellar companion with a mass above the deuterium-burning limit, located beyond 0.1 AU and in a nearly circular orbit. These planetary properties are difficult to reproduce from canonical planet formation and evolution models. For TOI-2529 b, we obtained the following orbital parameters: P = 64.5949-0.0003+0.0003 d, Mp = 2.340-0.195+0.197 Mj, Rp = 1.030-0.050+0.050 Rj and e = 0.021-0.015+0.024, making this object a new example of a growing population of transiting warm giant planets.
KW - Planets and satellites: composition
KW - Planets and satellites: detection
KW - Planets and satellites: formation
KW - Planets and satellites: gaseous planets
KW - Techniques: photometric
KW - Techniques: radial velocities
UR - http://www.scopus.com/inward/record.url?scp=85188647441&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/202348147
DO - 10.1051/0004-6361/202348147
M3 - Article
AN - SCOPUS:85188647441
SN - 0004-6361
VL - 683
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A192
ER -