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Mass determinations of the three mini-Neptunes transiting TOI-125

Nielsen, Louise D and Gandolfi, D. and Armstrong, D. J. and Jenkins, J. S. and Fridlund, M. and Santos, N. C. and Dai, F. and Adibekyan, V. and Luque, R. and Steffen, J. H. and Esposito, M. and Meru, F. and Sabotta, S and Bolmont, E and Kossakowski, D. and Otegi, J.F. and Murgas, F. and Stalport, M. and Rodler, Florian and Díaz, Matías R. and Kurtovic, Nicolás T. and Ricker, G. and Vanderspek, R. and Latham, D W and Seager, S. and Winn, J. N. and Jenkins, J. M. and Allart, R. and Almenara, J. M. and Barrado, D. and Barros, S. C. C. and Bayliss, D. and Berdiñas, Zaira M. and Boisse, I. and Bouchy, F. and Boyd, P. and Brown, D. J. A. and Bryant, E. and Burke, Christopher J. and Cochran, W. D. and Cooke, B. and Demangeon, O. and Diaz, R. F. and Dittman, J. and Dorn, C. and Dumusque, X. and Garcia, R.A. and González Cuesta, L. and Grziwa, S. and Georgieva, I. and Guerrero, N. and Hatzes, A. and Helled, Ravit and Henze, C.E. and Hojjatpanah, S. and Korth, J. and Lam, K. W. F. and Lillo-Box, J. and Lopez, Théo A. and Livingston, J. and Mathur, S. and Mousis, O. and Narita, N. and Osborn, H. P. and Palle, E. and Rojas, P. A. and Persson, C. and Quinn, S. N. and Rauer, Heike and Redfield, Seth and Santerne, A. and dos Santos, L.A. and Seidel, J.V. and Sousa, S. G. and Ting, E.B. and Turbet, M and Udry, S. and Vanderburg, A. and Van Eylen, V. and Vines, J. I and Wheatley, P. and Wilson, Paul A. (2020) Mass determinations of the three mini-Neptunes transiting TOI-125. Monthly Notices of the Royal Astronomical Society, 492 (4), p. 5399. Oxford University Press. doi: 10.1093/mnras/staa197. ISSN 0035-8711.

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Official URL: https://academic.oup.com/mnras/article/492/4/5399/5714765

Abstract

The Transiting Exoplanet Survey Satellite, TESS, is currently carrying out an all-sky search for small planets transiting bright stars. In the first year of the TESS survey, a steady progress was made in achieving the missions primary science goal of establishing bulk densities for 50 planets smaller than Neptune. During that year, the TESSs observations were focused on the southern ecliptic hemisphere, resulting in the discovery of three mini-Neptunes orbiting the star TOI-125, a V = 11.0 K0 dwarf. We present intensive HARPS radial velocity observations, yielding precise mass measurements for TOI-125b, TOI-125c, and TOI-125d. TOI-125b has an orbital period of 4.65 d, a radius of 2.726 ± 0.075 RE, a mass of 9.50 ± 0.88 ME, and is near the 2:1 mean motion resonance with TOI-125c at 9.15 d. TOI-125c has a similar radius of 2.759 ± 0.10 RE and a mass of 6.63 ± 0.99 ME, being the puffiest of the three planets. TOI-125d has an orbital period of 19.98 d and a radius of 2.93 ± 0.17 RE and mass 13.6 ± 1.2 ME. For TOI-125b and d, we find unusual high eccentricities of 0.19 ± 0.04 and 0.17+0.08-0.06⁠, respectively. Our analysis also provides upper mass limits for the two low-SNR planet candidates in the system; for TOI-125.04 (RP = 1.36 RE, P = 0.53 d), we find a 2 sigma upper mass limit of 1.6 ME, whereas TOI-125.05 (⁠RP=4.2+2.4-1.4 RE, P = 13.28 d) is unlikely a viable planet candidate with an upper mass limit of 2.7 ME. We discuss the internal structure of the three confirmed planets, as well as dynamical stability and system architecture for this intriguing exoplanet system.

Item URL in elib:https://elib.dlr.de/147996/
Document Type:Article
Title:Mass determinations of the three mini-Neptunes transiting TOI-125
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Nielsen, Louise DGeneva Observatory, University of Geneva, Chemin des Mailettes 51, CH-1290 Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Gandolfi, D.Dipartimento di Fisica, Università di Torino, via P. Giuria 1, I-10125 Torino, ItalyUNSPECIFIEDUNSPECIFIED
Armstrong, D. J.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Jenkins, J. S.Departamento de Astronomía, Universidad de Chile, Camino ElObservatorio 1515, Las Condes, Santiago, Chile; Centro de Astrofísica y Tecnologías Afines (CATA), Casilla 36-D,Santiago, ChileUNSPECIFIEDUNSPECIFIED
Fridlund, M.Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands; Chalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, SE-439 92 Onsala, Sweden; Instituto de Astrofísica de Canarias (IAC), 38205 LaUNSPECIFIEDUNSPECIFIED
Santos, N. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Dai, F.Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ, 08544, USA; Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USAUNSPECIFIEDUNSPECIFIED
Adibekyan, V.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Luque, R.Instituto de Astrofisica de Canarias, C/ Via Lactea s/n, 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna, 38206, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Steffen, J. H.Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154, USAUNSPECIFIEDUNSPECIFIED
Esposito, M.Thuringer Landessternwarte Tautenburg, 07778, Tautenburg, GermanyUNSPECIFIEDUNSPECIFIED
Meru, F.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Sabotta, SThuringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tauten-burg, GermanyUNSPECIFIEDUNSPECIFIED
Bolmont, EUni. GeneveUNSPECIFIEDUNSPECIFIED
Kossakowski, D.Max-Planck-Institut für Astronomie, Königstuhl 17, Heidelberg, 69117, GermanyUNSPECIFIEDUNSPECIFIED
Otegi, J.F.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland; Institute for Computational Science, University of Zurich, Winterthurerstr. 190, 8057, Zurich, SwitzerlandUNSPECIFIEDUNSPECIFIED
Murgas, F.Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Stalport, M.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Rodler, FlorianEuropean Southern Observatory(ESO), Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, ChileUNSPECIFIEDUNSPECIFIED
Díaz, Matías R.Departamento de Astronomía, Universidad de Chile, Las Condes, Chile; Centro de Astrofísica y Tecnologías Afines (CATA), Santiago, ChileUNSPECIFIEDUNSPECIFIED
Kurtovic, Nicolás T.Departamento de Astronomía, Universidad de Chile, Las Condes, ChileUNSPECIFIEDUNSPECIFIED
Ricker, G.Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USAUNSPECIFIEDUNSPECIFIED
Vanderspek, R.Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USAUNSPECIFIEDUNSPECIFIED
Latham, D WHarvard-Smithonian Center for Astrophysics, CambridgeUNSPECIFIEDUNSPECIFIED
Seager, S.Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA, 02139, USA; Department of Aeronautics and Astronautics, MIT, Cambridge, MA, 0213UNSPECIFIEDUNSPECIFIED
Winn, J. N.Department of Physics, Massachusetts Institute of TechnologyUNSPECIFIEDUNSPECIFIED
Jenkins, J. M.NASA Ames Research Center, Moffett Field, CA, 94035, USAUNSPECIFIEDUNSPECIFIED
Allart, R.Observatoire Astronomique de l’Université de Genève, CheminPegasi 51, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Almenara, J. M.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, CH-1290 Versoix, Switzerlandhttps://orcid.org/0000-0003-3208-9815UNSPECIFIED
Barrado, D.Departamento de Astrofisica, Centro de Astrobiologia (INTA-CSIC), Campus ESAC (ESA)Camino Bajo del Castillo s/n 28692 Villanueva de la Canada, SpainUNSPECIFIEDUNSPECIFIED
Barros, S. C. C.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Bayliss, D.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Berdiñas, Zaira M.Departamento de Astronomía, Universidad de Chile, Las Condes, Chile; Centro de Astrofísica y Tecnologías Afines (CATA), Santiago, ChileUNSPECIFIEDUNSPECIFIED
Boisse, I.Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, FranceUNSPECIFIEDUNSPECIFIED
Bouchy, F.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Boyd, P.NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USAUNSPECIFIEDUNSPECIFIED
Brown, D. J. A.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Bryant, E.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Burke, Christopher J.Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USAUNSPECIFIEDUNSPECIFIED
Cochran, W. D.Department of Astronomy and McDonald Observatory, Universityof Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712,USAUNSPECIFIEDUNSPECIFIED
Cooke, B.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Demangeon, O.instituto de astrofísica e ciências do espaço, universidade de porto, caup, rua das estrelas, 4150-762 porto, portugalUNSPECIFIEDUNSPECIFIED
Diaz, R. F.Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Astronomia y Fisica del Espacio (IAFE), Buenos Aires, ArgentinaUNSPECIFIEDUNSPECIFIED
Dittman, J.Department of Earth, Atmospheric, and Planetary Sciences, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USAUNSPECIFIEDUNSPECIFIED
Dorn, C.Institute of Computational Sciences, University of Zurich, Winterthurerstraße 109, 8057, Zurich, SwitzerlandUNSPECIFIEDUNSPECIFIED
Dumusque, X.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Garcia, R.A.IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France; AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, F-91191 Gif-sur-Yvette, FranceUNSPECIFIEDUNSPECIFIED
González Cuesta, L.Instituto de Astrofisica de Canarias, C/ Via Lactea s/n, E-38205 La Laguna,SpainUNSPECIFIEDUNSPECIFIED
Grziwa, S.Rheinisches Institut furr Umweltforschung an der Universitaet zu Koeln, Aachener Strasse 209, 50931 Koeln, GermanyUNSPECIFIEDUNSPECIFIED
Georgieva, I.Department of Space, Earth and Environment, Onsala Space Observatory, Chalmers University of Technology, SE-439 92, Onsala, SwedenUNSPECIFIEDUNSPECIFIED
Guerrero, N.Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USAUNSPECIFIEDUNSPECIFIED
Hatzes, A.Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenberg, GermanyUNSPECIFIEDUNSPECIFIED
Helled, RavitInstitute for Computational Science, University of Zurich, Zurich, SwitzerlandUNSPECIFIEDUNSPECIFIED
Henze, C.E.Space Science & Astrobiology Division, NASA Ames ResearchCenter, Moffett Field, CA 94035, USAUNSPECIFIEDUNSPECIFIED
Hojjatpanah, S.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, PortugalUNSPECIFIEDUNSPECIFIED
Korth, J.Rheinisches Institut für Umweltforschung an der Universitaet zu Koeln, Aachener Strasse 209, D-50931 Koeln, GermanyUNSPECIFIEDUNSPECIFIED
Lam, K. W. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lillo-Box, J.Departmento de Astrofísica, Centro de Astrobiologia (CSIC-INTA),ESAC campus, 28692 Villanueva de la Cãda (Madrid), SpainUNSPECIFIEDUNSPECIFIED
Lopez, Théo A.Aix-Marseille Université, CNRS, CNES, LAM, Marseilles, FranceUNSPECIFIEDUNSPECIFIED
Livingston, J.Department of Astronomy, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-0033, JapanUNSPECIFIEDUNSPECIFIED
Mathur, S.Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain; Departamento de Astrofisica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Mousis, O.Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille), UMR 7326, 13388, Marseille, FranceUNSPECIFIEDUNSPECIFIED
Narita, N.department of astronomy, the university of tokyo, 7-3-1 hongo, bunkyo-ku, tokyo 113-0033, japanUNSPECIFIEDUNSPECIFIED
Osborn, H. P.Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, F-13388 Marseille, France; 0000-0002-4047-4724UNSPECIFIEDUNSPECIFIED
Palle, E.Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain );; Departamento de Astrofisica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, SpainUNSPECIFIEDUNSPECIFIED
Rojas, P. A.Departamento de Astronomía, Universidad de Chile, Camino El Observatorio 1515, Las Condes, Santiago, ChileUNSPECIFIEDUNSPECIFIED
Persson, C.Department of Earth and Space Sciences, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, SwedenUNSPECIFIEDUNSPECIFIED
Quinn, S. N.Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USAUNSPECIFIEDUNSPECIFIED
Rauer, HeikeUNSPECIFIEDhttps://orcid.org/0000-0002-6510-1828UNSPECIFIED
Redfield, SethAstronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA 0000-0003-3786-3486UNSPECIFIEDUNSPECIFIED
Santerne, A.Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, 13388, Marseille, Francehttps://orcid.org/0000-0002-3586-1316UNSPECIFIED
dos Santos, L.A.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Seidel, J.V.Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Sousa, S. G.Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugalhttps://orcid.org/0000-0001-9047-2965UNSPECIFIED
Ting, E.B.Space Science & Astrobiology Division, NASA Ames ResearchCenter, Moffett Field, CA 94035, USAUNSPECIFIEDUNSPECIFIED
Turbet, MUni. GeneveUNSPECIFIEDUNSPECIFIED
Udry, S.Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, SwitzerlandUNSPECIFIEDUNSPECIFIED
Vanderburg, A.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USAUNSPECIFIEDUNSPECIFIED
Van Eylen, V.Mullard Space Science Laboratory, University College London,Holmbury St Mary, Dorking, Surrey RH5 6NT, UKUNSPECIFIEDUNSPECIFIED
Vines, J. IDepartamento de Astronomía, Universidad de Chile, Camino el Observatorio 1515, Las Condes, Casilla 36-D, 7591245, Santiago, ChileUNSPECIFIEDUNSPECIFIED
Wheatley, P.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7ALUNSPECIFIEDUNSPECIFIED
Wilson, Paul A.Centre for Exoplanets and Habitability, University of Warwick, Coventry, UK; Department of Physics, University of Warwick, Coventry, UKUNSPECIFIEDUNSPECIFIED
Date:22 January 2020
Journal or Publication Title:Monthly Notices of the Royal Astronomical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:492
DOI:10.1093/mnras/staa197
Page Range:p. 5399
Publisher:Oxford University Press
ISSN:0035-8711
Status:Published
Keywords:Planets and satellites: detection, Planets and satellites: individual: (TOI-125, TIC 52368076)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project PLATO - PMC and Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF
Deposited By: Cabrera Perez, Juan
Deposited On:06 Jan 2022 08:43
Last Modified:04 Dec 2023 14:38

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