Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
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, Volume 527, No. 3, Year 2024
Notification
URL copied to clipboard!
Description
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. © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
Authors & Co-Authors
Hébrard, Guillaume H.
France, Paris
Sorbonne Université
France, Marseille
Aix Marseille Université
Vanderburg, Andrew M.
United States, Cambridge
Massachusetts Institute of Technology
Buchhave, Lars A.
Denmark, Lyngby
Technical University of Denmark
Collins, Karen A.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Mann, Christopher R.
Canada, Montreal
University of Montreal
Hellier, Coel
United Kingdom, Keele
Keele University
West, Richard G.
United Kingdom, Coventry
University of Warwick
Stalport, Manu
Belgium, Liege
Université de Liège
Heidari, Neda
France, Paris
Sorbonne Université
Anderson, David R.
United Kingdom, Coventry
University of Warwick
Huang, Chelsea X.
Unknown Affiliation
López-Morales, Mercedes
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Dumusque, Xavier
Unknown Affiliation
Boisse, Isabelle
France, Paris
Cnes Centre National D'etudes Spatiales
Rowden, Pamela
United Kingdom, London
Royal Astronomical Society
Cameron, Andrew C.
United Kingdom, St Andrews
University of st Andrews
Deleuil, Magalie
France, Marseille
Aix Marseille Université
Vezie, Michael L.
United States, Cambridge
Massachusetts Institute of Technology
Pepe, Franscesco Alfonso
Unknown Affiliation
Delfosse, Xavier
France, Saint Martin D'heres
Université Grenoble Alpes
Charbonneau, David B.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Demangeon, Olivier D.S.
Portugal, Porto
Instituto de Astrofísica e Ciências do Espaço
Quinn, Samuel N.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Forveille, Thierry
France, Saint Martin D'heres
Université Grenoble Alpes
Winn, Joshua N.
United States, Princeton
Princeton University
Sozzetti, Alessandro
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Seager, Sara
United States, Cambridge
Massachusetts Institute of Technology
Dalal, Shweta
United Kingdom, Exeter
University of Exeter
Martioli, Eder
France, Paris
Sorbonne Université
Brazil, Itajuba
Laboratorio Nacional de Astrofisica, Itajuba
Striegel, Stephanie
United States, Mountain View
Seti Institute
United States, Moffett Field
Nasa Ames Research Center
Boschin, Walter
Spain, Brena Baja
Fundación Galileo Galilei
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Dragomir, Diana
United States, Albuquerque
The University of new Mexico
Cosentino, Rosario G.
Spain, Brena Baja
Fundación Galileo Galilei
Ghedina, Adriano
Spain, Brena Baja
Fundación Galileo Galilei
Wunsche, Anaël
France, Moydans
Observatoire Des Baronnies Provençales
Barkaoui, Khalid
United States, Cambridge
Massachusetts Institute of Technology
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Belgium, Liege
Université de Liège
Srdoč, Gregor
Croatia, Viskovo
Kotizarovci Observatory
Guillet, Bruno
United States, Cambridge
American Association of Variable Star Observers
Conti, Dennis M.
United States, Cambridge
American Association of Variable Star Observers
Ghachoui, Mourad
Belgium, Liege
Université de Liège
Morocco, Marakech
Université Cadi Ayyad
Gillon, Michaël
Belgium, Liege
Université de Liège
Benkhaldoun, Z.
Morocco, Marakech
Université Cadi Ayyad
Pozuelos, Francisco J.
Belgium, Liege
Université de Liège
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Timmermans, Mathilde
Belgium, Liege
Université de Liège
Girardin, Eric
Unknown Affiliation
Bosch-Cabot, Pau
Spain, Girona
Observatori Astronòmic Albanyà
Muñoz, Joseph A.
Spain, Valencia
Universitat de València
Forés-Toribio, Raquel
Spain, Valencia
Universitat de València
Statistics
Authors: 48
Affiliations: 39
Identifiers
Doi:
10.1093/mnras/stad3255
ISSN:
00358711
Research Areas
Environmental
Study Design
Cohort Study