A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134

F. Rescigno; G. Hébrard; A. Vanderburg; A. W. Mann; A. Mortier; S. Morrell; L. A. Buchhave; K. A. Collins; C. R. Mann; C. Hellier; R. D. Haywood; R. West; M. Stalport; N. Heidari; D. Anderson; C. X. Huang; M. López-Morales; P. Cortés-Zuleta; H. M. Lewis; X. Dumusque; I. Boisse; P. Rowden; A. Collier Cameron; M. Deleuil; M. Vezie; F. A. Pepe; X. Delfosse; D. Charbonneau; K. Rice; O. Demangeon; S. N. Quinn; S. Udry; T. Forveille; J. N. Winn; A. Sozzetti; S. Hoyer; S. Seager; T. G. Wilson; S. Dalal; E. Martioli; S. Striegel; W. Boschin; D. Dragomir; A. F. Martínez Fiorenzano; R. Cosentino; A. Ghedina; L. Malavolta; L. Affer; B. S. Lakeland; B. A. Nicholson; S. Foschino; A. Wünsche; K. Barkaoui; G. Srdoc; J. Randolph; B. Guillet; D. M. Conti; M. Ghachoui; M. Gillon; Z. Benkhaldoun; F. J. Pozuelos; M. Timmermans; E. Girardin; S. Matutano; P. Bosch-Cabot; J. A. Muñoz; R. Forés-Toribio

doi:10.1093/mnras/stad3255

A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134

F. Rescigno^*
, G. Hébrard
, A. Vanderburg
, A. W. Mann
, A. Mortier
, S. Morrell
, L. A. Buchhave
, K. A. Collins
, C. R. Mann
, C. Hellier
, R. D. Haywood
, R. West
, M. Stalport
, N. Heidari
, D. Anderson
, C. X. Huang
, M. López-Morales
, P. Cortés-Zuleta
, H. M. Lewis
, X. Dumusque

I. Boisse, P. Rowden, A. Collier Cameron, M. Deleuil, M. Vezie, F. A. Pepe, X. Delfosse, D. Charbonneau, K. Rice, O. Demangeon, S. N. Quinn, S. Udry, T. Forveille, J. N. Winn, A. Sozzetti, S. Hoyer, S. Seager, T. G. Wilson, S. Dalal, E. Martioli, S. Striegel, W. Boschin, D. Dragomir, A. F. Martínez Fiorenzano, R. Cosentino, A. Ghedina, L. Malavolta, L. Affer, B. S. Lakeland, B. A. Nicholson, S. Foschino, A. Wünsche, K. Barkaoui, G. Srdoc, J. Randolph, B. Guillet, D. M. Conti, M. Ghachoui, M. Gillon, Z. Benkhaldoun, F. J. Pozuelos, M. Timmermans, E. Girardin, S. Matutano, P. Bosch-Cabot, J. A. Muñoz, R. Forés-Toribio

^*Corresponding author for this work

University of Exeter
Aix-Marseille Université
University of North Carolina at Chapel Hill
University of Birmingham
Harvard-Smithsonian Center for Astrophysics
University of Montreal
Keele University
University of Warwick
CNRS
Space Telescope Science Institute
University of St Andrews
University of Edinburgh
University of Porto
Princeton University
National Institute for Astrophysics
Laboratório Nacional de Astrofísica
NASA Ames Research Center
University of La Laguna
University of New Mexico
Astronomical Observatory of Padua
University of Oxford
American Association of Variable Star Observers
Cadi Ayyad University
CSIC - Institute of Astrophysics of Andalusia
University of Valencia
Université de Genève
Royal Astronomical Society
Massachusetts Institute of Technology
University of Southern Queensland
INAF - Fundacion Galileo Galilei
Observatorio Astronómico Albanyá
Université Grenoble Alpes
Grand-Pra Private Observatory
Kotizarovci Observatory
University of Liege
Observatoire des Baronnies Provençales
Institut d’Astrophysique de Paris

Research output: Contribution to journal › Journal article › Research › peer-review

22 Downloads (Orbit)

Abstract

We present the characterization of an inner mini-Neptune in a 9.2292005 ± 0.0000063 d orbit and an outer mono-transiting sub-Saturn planet in a 95.50 d orbit around the moderately active, bright (m_v = 8.9 mag) K5V star TOI-2134. Based on our analysis of five sectors of TESS data, we determine the radii of TOI-2134b and c to be 2.69 ± 0.16 R_O for the inner planet and 7.27 ± 0.42 R_O for the outer one. We acquired 111 radial-velocity (RV) spectra with HARPS-N and 108 RV spectra with SOPHIE. After careful periodogram analysis, we derive masses for both planets via Gaussian Process regression: 9.13 M_O for TOI-2134b and 41.89 M_O for TOI-2134c. We analysed the photometric and RV data first separately, then jointly. The inner planet is a mini-Neptune with density consistent with either a water-world or a rocky core planet with a low-mass H/He envelope. The outer planet has a bulk density similar to Saturn's. The outer planet is derived to have a significant eccentricity of 0.67 from a combination of photometry and RVs. We compute the irradiation of TOI-2134c as 1.45 ± 0.10 times the bolometric flux received by Earth, positioning it for part of its orbit in the habitable zone of its system. We recommend further RV observations to fully constrain the orbit of TOI-2134c. With an expected Rossiter-McLaughlin (RM) effect amplitude of 7.2 ± 1.3, we recommend TOI-2134c for follow-up RM analysis to study the spin-orbit architecture of the system. We calculate the Transmission Spectroscopy Metric, and both planets are suitable for bright-mode Near Infrared Camera (NIRCam) atmospheric characterization.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
Volume	527
Issue number	3
Pages (from-to)	5385-5407
ISSN	0035-8711
DOIs	https://doi.org/10.1093/mnras/stad3255
Publication status	Published - 2024

Keywords

Methods: data analysis
Planets and satellites: detection
Stars: activity
Stars: individual (TOI-2134, TIC 75878355, G 204-45)
Techniques: photometric
Techniques: radial velocities

Access to Document

10.1093/mnras/stad3255Licence: CC BY

FulltextFinal published version, 3.53 MBLicence: CC BY

OpenUrl availability

Check availability in DTU Findit

Cite this

Rescigno, F., Hébrard, G., Vanderburg, A., Mann, A. W., Mortier, A., Morrell, S., Buchhave, L. A., Collins, K. A., Mann, C. R., Hellier, C., Haywood, R. D., West, R., Stalport, M., Heidari, N., Anderson, D., Huang, C. X., López-Morales, M., Cortés-Zuleta, P., Lewis, H. M., ... Forés-Toribio, R. (2024). A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134. Monthly Notices of the Royal Astronomical Society, 527(3), 5385-5407. https://doi.org/10.1093/mnras/stad3255

@article{6682a48920f044e5b7525f8eb6daa2c3,

title = "A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134",

abstract = "We present the characterization of an inner mini-Neptune in a 9.2292005 ± 0.0000063 d orbit and an outer mono-transiting sub-Saturn planet in a 95.50 d orbit around the moderately active, bright (mv = 8.9 mag) K5V star TOI-2134. Based on our analysis of five sectors of TESS data, we determine the radii of TOI-2134b and c to be 2.69 ± 0.16 RO for the inner planet and 7.27 ± 0.42 RO for the outer one. We acquired 111 radial-velocity (RV) spectra with HARPS-N and 108 RV spectra with SOPHIE. After careful periodogram analysis, we derive masses for both planets via Gaussian Process regression: 9.13 MO for TOI-2134b and 41.89 MO for TOI-2134c. We analysed the photometric and RV data first separately, then jointly. The inner planet is a mini-Neptune with density consistent with either a water-world or a rocky core planet with a low-mass H/He envelope. The outer planet has a bulk density similar to Saturn's. The outer planet is derived to have a significant eccentricity of 0.67 from a combination of photometry and RVs. We compute the irradiation of TOI-2134c as 1.45 ± 0.10 times the bolometric flux received by Earth, positioning it for part of its orbit in the habitable zone of its system. We recommend further RV observations to fully constrain the orbit of TOI-2134c. With an expected Rossiter-McLaughlin (RM) effect amplitude of 7.2 ± 1.3, we recommend TOI-2134c for follow-up RM analysis to study the spin-orbit architecture of the system. We calculate the Transmission Spectroscopy Metric, and both planets are suitable for bright-mode Near Infrared Camera (NIRCam) atmospheric characterization.",

keywords = "Methods: data analysis, Planets and satellites: detection, Stars: activity, Stars: individual (TOI-2134, TIC 75878355, G 204-45), Techniques: photometric, Techniques: radial velocities",

author = "F. Rescigno and G. H{\'e}brard and A. Vanderburg and Mann, \{A. W.\} and A. Mortier and S. Morrell and Buchhave, \{L. A.\} and Collins, \{K. A.\} and Mann, \{C. R.\} and C. Hellier and Haywood, \{R. D.\} and R. West and M. Stalport and N. Heidari and D. Anderson and Huang, \{C. X.\} and M. L{\'o}pez-Morales and P. Cort{\'e}s-Zuleta and Lewis, \{H. M.\} and X. Dumusque and I. Boisse and P. Rowden and \{Collier Cameron\}, A. and M. Deleuil and M. Vezie and Pepe, \{F. A.\} and X. Delfosse and D. Charbonneau and K. Rice and O. Demangeon and Quinn, \{S. N.\} and S. Udry and T. Forveille and Winn, \{J. N.\} and A. Sozzetti and S. Hoyer and S. Seager and Wilson, \{T. G.\} and S. Dalal and E. Martioli and S. Striegel and W. Boschin and D. Dragomir and \{Mart{\'i}nez Fiorenzano\}, \{A. F.\} and R. Cosentino and A. Ghedina and L. Malavolta and L. Affer and Lakeland, \{B. S.\} and Nicholson, \{B. A.\} and S. Foschino and A. W{\"u}nsche and K. Barkaoui and G. Srdoc and J. Randolph and B. Guillet and Conti, \{D. M.\} and M. Ghachoui and M. Gillon and Z. Benkhaldoun and Pozuelos, \{F. J.\} and M. Timmermans and E. Girardin and S. Matutano and P. Bosch-Cabot and Mu{\~n}oz, \{J. A.\} and R. For{\'e}s-Toribio",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.",

year = "2024",

doi = "10.1093/mnras/stad3255",

language = "English",

volume = "527",

pages = "5385--5407",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

Rescigno, F, Hébrard, G, Vanderburg, A, Mann, AW, Mortier, A, Morrell, S, Buchhave, LA, Collins, KA, Mann, CR, Hellier, C, Haywood, RD, West, R, Stalport, M, Heidari, N, Anderson, D, Huang, CX, López-Morales, M, Cortés-Zuleta, P, Lewis, HM, Dumusque, X, Boisse, I, Rowden, P, Collier Cameron, A, Deleuil, M, Vezie, M, Pepe, FA, Delfosse, X, Charbonneau, D, Rice, K, Demangeon, O, Quinn, SN, Udry, S, Forveille, T, Winn, JN, Sozzetti, A, Hoyer, S, Seager, S, Wilson, TG, Dalal, S, Martioli, E, Striegel, S, Boschin, W, Dragomir, D, Martínez Fiorenzano, AF, Cosentino, R, Ghedina, A, Malavolta, L, Affer, L, Lakeland, BS, Nicholson, BA, Foschino, S, Wünsche, A, Barkaoui, K, Srdoc, G, Randolph, J, Guillet, B, Conti, DM, Ghachoui, M, Gillon, M, Benkhaldoun, Z, Pozuelos, FJ, Timmermans, M, Girardin, E, Matutano, S, Bosch-Cabot, P, Muñoz, JA & Forés-Toribio, R 2024, 'A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134', Monthly Notices of the Royal Astronomical Society, vol. 527, no. 3, pp. 5385-5407. https://doi.org/10.1093/mnras/stad3255

TY - JOUR

T1 - A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134

AU - Rescigno, F.

AU - Hébrard, G.

AU - Vanderburg, A.

AU - Mann, A. W.

AU - Mortier, A.

AU - Morrell, S.

AU - Buchhave, L. A.

AU - Collins, K. A.

AU - Mann, C. R.

AU - Hellier, C.

AU - Haywood, R. D.

AU - West, R.

AU - Stalport, M.

AU - Heidari, N.

AU - Anderson, D.

AU - Huang, C. X.

AU - López-Morales, M.

AU - Cortés-Zuleta, P.

AU - Lewis, H. M.

AU - Dumusque, X.

AU - Boisse, I.

AU - Rowden, P.

AU - Collier Cameron, A.

AU - Deleuil, M.

AU - Vezie, M.

AU - Pepe, F. A.

AU - Delfosse, X.

AU - Charbonneau, D.

AU - Rice, K.

AU - Demangeon, O.

AU - Quinn, S. N.

AU - Udry, S.

AU - Forveille, T.

AU - Winn, J. N.

AU - Sozzetti, A.

AU - Hoyer, S.

AU - Seager, S.

AU - Wilson, T. G.

AU - Dalal, S.

AU - Martioli, E.

AU - Striegel, S.

AU - Boschin, W.

AU - Dragomir, D.

AU - Martínez Fiorenzano, A. F.

AU - Cosentino, R.

AU - Ghedina, A.

AU - Malavolta, L.

AU - Affer, L.

AU - Lakeland, B. S.

AU - Nicholson, B. A.

AU - Foschino, S.

AU - Wünsche, A.

AU - Barkaoui, K.

AU - Srdoc, G.

AU - Randolph, J.

AU - Guillet, B.

AU - Conti, D. M.

AU - Ghachoui, M.

AU - Gillon, M.

AU - Benkhaldoun, Z.

AU - Pozuelos, F. J.

AU - Timmermans, M.

AU - Girardin, E.

AU - Matutano, S.

AU - Bosch-Cabot, P.

AU - Muñoz, J. A.

AU - Forés-Toribio, R.

PY - 2024

Y1 - 2024

N2 - We present the characterization of an inner mini-Neptune in a 9.2292005 ± 0.0000063 d orbit and an outer mono-transiting sub-Saturn planet in a 95.50 d orbit around the moderately active, bright (mv = 8.9 mag) K5V star TOI-2134. Based on our analysis of five sectors of TESS data, we determine the radii of TOI-2134b and c to be 2.69 ± 0.16 RO for the inner planet and 7.27 ± 0.42 RO for the outer one. We acquired 111 radial-velocity (RV) spectra with HARPS-N and 108 RV spectra with SOPHIE. After careful periodogram analysis, we derive masses for both planets via Gaussian Process regression: 9.13 MO for TOI-2134b and 41.89 MO for TOI-2134c. We analysed the photometric and RV data first separately, then jointly. The inner planet is a mini-Neptune with density consistent with either a water-world or a rocky core planet with a low-mass H/He envelope. The outer planet has a bulk density similar to Saturn's. The outer planet is derived to have a significant eccentricity of 0.67 from a combination of photometry and RVs. We compute the irradiation of TOI-2134c as 1.45 ± 0.10 times the bolometric flux received by Earth, positioning it for part of its orbit in the habitable zone of its system. We recommend further RV observations to fully constrain the orbit of TOI-2134c. With an expected Rossiter-McLaughlin (RM) effect amplitude of 7.2 ± 1.3, we recommend TOI-2134c for follow-up RM analysis to study the spin-orbit architecture of the system. We calculate the Transmission Spectroscopy Metric, and both planets are suitable for bright-mode Near Infrared Camera (NIRCam) atmospheric characterization.

AB - We present the characterization of an inner mini-Neptune in a 9.2292005 ± 0.0000063 d orbit and an outer mono-transiting sub-Saturn planet in a 95.50 d orbit around the moderately active, bright (mv = 8.9 mag) K5V star TOI-2134. Based on our analysis of five sectors of TESS data, we determine the radii of TOI-2134b and c to be 2.69 ± 0.16 RO for the inner planet and 7.27 ± 0.42 RO for the outer one. We acquired 111 radial-velocity (RV) spectra with HARPS-N and 108 RV spectra with SOPHIE. After careful periodogram analysis, we derive masses for both planets via Gaussian Process regression: 9.13 MO for TOI-2134b and 41.89 MO for TOI-2134c. We analysed the photometric and RV data first separately, then jointly. The inner planet is a mini-Neptune with density consistent with either a water-world or a rocky core planet with a low-mass H/He envelope. The outer planet has a bulk density similar to Saturn's. The outer planet is derived to have a significant eccentricity of 0.67 from a combination of photometry and RVs. We compute the irradiation of TOI-2134c as 1.45 ± 0.10 times the bolometric flux received by Earth, positioning it for part of its orbit in the habitable zone of its system. We recommend further RV observations to fully constrain the orbit of TOI-2134c. With an expected Rossiter-McLaughlin (RM) effect amplitude of 7.2 ± 1.3, we recommend TOI-2134c for follow-up RM analysis to study the spin-orbit architecture of the system. We calculate the Transmission Spectroscopy Metric, and both planets are suitable for bright-mode Near Infrared Camera (NIRCam) atmospheric characterization.

KW - Methods: data analysis

KW - Planets and satellites: detection

KW - Stars: activity

KW - Stars: individual (TOI-2134, TIC 75878355, G 204-45)

KW - Techniques: photometric

KW - Techniques: radial velocities

U2 - 10.1093/mnras/stad3255

DO - 10.1093/mnras/stad3255

M3 - Journal article

AN - SCOPUS:85179837033

SN - 0035-8711

VL - 527

SP - 5385

EP - 5407

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

A hot mini-Neptune and a temperate, highly eccentric sub-Saturn around the bright K-dwarf TOI-2134

Abstract

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this