9
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      A pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 characterized with CHEOPS

      1 , 2 , 3 , 4 , 2 , 5 , 6 , 1 , 6 , 7 , 5 , 8 , 4 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 4 , 16 , 4 , 10 , 17 , 10 , 15 , 18 , 18 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 15 , 26 , 5 , 10 , 4 , 10 , 27 , 11 , 4 , 9 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 34 , 36 , 23 , 31 , 37 , 13 , 38 , 39 , 15 , 26 , 9 , 40 , 41 , 10 , 31 , 4 , 9 , 42 , 28 , 38 , 43 , 10 , 44 , 45 , 18 , 4 , 9 , 28 , 1 , 43 , 46 , 43 , 47 , 48 , 49 , 50 , 31 , 51 , 34 , 52 , 10 , 43 , 53 , 54 , 10 , 55 , 50 , 30 , 56 , 57 , 58 , 45 , 18 , 50 , 59 , 11 , 9 , 53 , 60 , 45 , 61 , 19 , 20 , 62 , 49 , 50 , 28 , 10 , 63 , 49 , 50 , 23 , 31 , 64 , 65 , 66 , 21 , 22 , 53 , 4 , 15 , 26 , 61 , 18 , 67 , 43 , 53 , 68 , 69 , 10 , 2 , 4 , 31 , 5 , 70 , 71 , 72 , 73 , 4 , 43 , 41 , 10 , 60 , 39 , 53 , 50 , 74 , 75
      Monthly Notices of the Royal Astronomical Society
      Oxford University Press (OUP)

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          ABSTRACT

          We report the discovery and characterization of a pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 (TIC 79748331), initially detected in the Transiting Exoplanet Survey Satellite (TESS) photometry. To characterize the system, we performed and retrieved the CHaracterising ExOPlanets Satellite (CHEOPS), TESS, and ground-based photometry, the High Accuracy Radial velocity Planet Searcher (HARPS) high-resolution spectroscopy, and Gemini speckle imaging. We characterize the host star and determine $T_{\rm eff, \star }=4734\pm 67\,\mathrm{ K}$, $R_{\star }=0.726\pm 0.007\, \mathrm{ R}_{\odot }$, and $M_{\star }=0.748\pm 0.032\, \mathrm{ M}_{\odot }$. We present a novel detrending method based on point spread function shape-change modelling and demonstrate its suitability to correct flux variations in CHEOPS data. We confirm the planetary nature of both bodies and find that TOI-1064 b has an orbital period of Pb = 6.44387 ± 0.00003 d, a radius of Rb = 2.59 ± 0.04 R⊕, and a mass of $M_{\rm b} = 13.5_{-1.8}^{+1.7}$ M⊕, whilst TOI-1064 c has an orbital period of $P_{\rm c} = 12.22657^{+0.00005}_{-0.00004}$ d, a radius of Rc = 2.65 ± 0.04 R⊕, and a 3σ upper mass limit of 8.5 M⊕. From the high-precision photometry we obtain radius uncertainties of ∼1.6 per cent, allowing us to conduct internal structure and atmospheric escape modelling. TOI-1064 b is one of the densest, well-characterized sub-Neptunes, with a tenuous atmosphere that can be explained by the loss of a primordial envelope following migration through the protoplanetary disc. It is likely that TOI-1064 c has an extended atmosphere due to the tentative low density, however further radial velocities are needed to confirm this scenario and the similar radii, different masses nature of this system. The high-precision data and modelling of TOI-1064 b are important for planets in this region of mass–radius space, and it allow us to identify a trend in bulk density–stellar metallicity for massive sub-Neptunes that may hint at the formation of this population of planets.

          Related collections

          Most cited references220

          • Record: found
          • Abstract: not found
          • Article: not found

          Gaia Data Release 2

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Bayes Factors

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              The Two Micron All Sky Survey (2MASS)

                Bookmark

                Author and article information

                Contributors
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                Journal
                Monthly Notices of the Royal Astronomical Society
                Oxford University Press (OUP)
                0035-8711
                1365-2966
                March 2022
                February 04 2022
                March 2022
                February 04 2022
                January 13 2022
                : 511
                : 1
                : 1043-1071
                Affiliations
                [1 ]Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
                [2 ]Dipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, I-10125 Torino, Italy
                [3 ]Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany
                [4 ]Physikalisches Institut, University of Bern, Gesellsschaftstrasse 6, CH-3012 Bern, Switzerland
                [5 ]Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria
                [6 ]Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-43992 Onsala, Sweden
                [7 ]Leiden Observatory, University of Leiden, PO Box 9513, NL-2300 RA Leiden, the Netherlands
                [8 ]Department of Space, Earth and Environment, Astronomy and Plasma Physics, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
                [9 ]Center for Space and Habitability, Gesellsschaftstrasse 6, CH-3012 Bern, Switzerland
                [10 ]Observatoire Astronomique de l’Université de Genève, Chemin Pegasi 51, CH-1290 Versoix, Switzerland
                [11 ]Department of Astronomy, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden
                [12 ]Department of Astronomy, Stockholm University, SE-10691 Stockholm, Sweden
                [13 ]Aix Marseille Univ, CNRS, CNES, LAM, F-13013 Marseille, France
                [14 ]Division Technique INSU, BP 330, F-83507 La Seyne cedex, France
                [15 ]Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal
                [16 ]Laboratoire d’Astrophysique de Marseille, 38 Rue Frédéric Joliot Curie, F-13013 Marseille, France
                [17 ]Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43, SE-22100 Lund, Sweden
                [18 ]Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, CS 34229, F-06304 Nice Cedex 4, France
                [19 ]Instituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife, Spain
                [20 ]Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
                [21 ]Institut de Ciencies de l’Espai (ICE, CSIC), Campus UAB, Can Magrans s/n, E-08193 Bellaterra, Spain
                [22 ]Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain
                [23 ]European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, NL-2201 AZ Noordwijk, the Netherlands
                [24 ]Admatis, 5. Kandó Kálmán Street, 3534 Miskolc, Hungary
                [25 ]Depto. de Astrofisica, Centro de Astrobiologia (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
                [26 ]Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua do Campo Alegre, P-4169-007 Porto, Portugal
                [27 ]Université Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
                [28 ]Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
                [29 ]Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
                [30 ]Concordia Station, Dome C, Antarctica
                [31 ]Institute of Planetary Research, German Aerospace Center (DLR), Rutherfordstrasse 2, D-12489 Berlin, Germany
                [32 ]Institut de physique du globe de Paris, Université de Paris, CNRS, F-75005 Paris, France
                [33 ]NASA Exoplanet Science Institute, Caltech/IPAC, 1200 E. California Ave, Pasadena, CA 91125, USA
                [34 ]Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
                [35 ]Center for Planetary Systems Habitability and McDonald Observatory, The University of Texas at Austin, Austin, TX 78712, USA
                [36 ]NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
                [37 ]Centre for Mathematical Sciences, Lund University, Box 118, SE-22100 Lund, Sweden
                [38 ]Astrobiology Research Unit, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium
                [39 ]Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium
                [40 ]Department of Physics and Astronomy, University of New Mexico, 1919 Lomas Blvd NE, Albuquerque, NM 87131, USA
                [41 ]School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
                [42 ]Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, China
                [43 ]NASA Ames Research Center, Moffett Field, CA 94035, USA
                [44 ]Rhenish Institute for Environmental Research, Department of Planetary Research, University of Cologne, Aachener Strasse 209, D-50931 Cologne, Germany
                [45 ]Department of Astrophysics, University of Vienna, Türkenschanzstrasse 17, A-1180 Vienna, Austria
                [46 ]Science and Operations Department – Science Division (SCI-SC), Directorate of Science, European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, NL-2201 AZ Noordwijk, the Netherlands
                [47 ]Department of Physics and Astronomy, Swarthmore College, Swarthmore, PA 19081, USA
                [48 ]Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklós út 15-17, 1121 Budapest, Hungary
                [49 ]Dipartimento di Fisica e Astronomia ‘Galileo Galilei’, Universita degli Studi di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
                [50 ]INAF, Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
                [51 ]IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ., Sorbonne Univ., 77 av. Denfert-Rochereau, F-75014 Paris, France
                [52 ]Institut d’astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98 bis Blvd. Arago, F-75014 Paris, France
                [53 ]Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
                [54 ]Department of Astronomy, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
                [55 ]Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía s/n, E-18008 Granada, Spain
                [56 ]Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
                [57 ]Astronomy Department, University of California, Berkeley, CA 94720, USA
                [58 ]Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
                [59 ]Department of Physics, University of Oxford, Oxford OX1 3RH, UK
                [60 ]Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
                [61 ]INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78, I-95123 Catania, Italy
                [62 ]Institute of Optical Sensor Systems, German Aerospace Center (DLR), Rutherfordstrasse 2, D-12489 Berlin, Germany
                [63 ]Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, UK
                [64 ]Center for Astronomy and Astrophysics, Technical University Berlin, Hardenberstrasse 36, D-10623 Berlin, Germany
                [65 ]Institut für Geologische Wissenschaften, Freie Universität Berlin, D-12249 Berlin, Germany
                [66 ]Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA
                [67 ]Patashnick Voorheesville Observatory, Voorheesville, NY 12186, USA
                [68 ]Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
                [69 ]Department of Aeronautics and Astronautics, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
                [70 ]Hazelwood Observatory, Australia
                [71 ]ELTE Eötvös Loránd University, Gothard Astrophysical Observatory, Szent Imre h. u. 112, 9700 Szombathely, Hungary
                [72 ]MTA-ELTE Exoplanet Research Group, Szent Imre h. u. 112, 9700 Szombathely, Hungary
                [73 ]MTA-ELTE Lendület Milky Way Research Group, Szent Imre h. u. 112, 9700 Szombathely, Hungary
                [74 ]Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
                [75 ]Department of Astrophysical Sciences, Princeton University, 4 Ivy Ln, Princeton, NJ 08544, USA
                Article
                10.1093/mnras/stab3799
                2bf39f70-a856-4cc5-8326-e99c500b0ee7
                © 2022

                https://creativecommons.org/licenses/by/4.0/

                History

                Comments

                Comment on this article