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Transit detection of the long-period volatile-rich super-Earth ν² Lupi d with CHEOPS

Delrez, Laetitia and Ehrenreich, David and Alibert, Yann and Bonfanti, Andrea and Borsato, Luca and Fossati, Luca and Hooton, Matthew J. and Hoyer, Sergio and Pozuelos, Francisco J. and Salmon, Sébastien and Sulis, Sophia and Wilson, Thomas G. and Adibekyan, Vardan and Bourrier, Vincent and Brandeker, Alexis and Charnoz, Sebastien and Deline, Adrien and Guterman, Pascal and Haldemann, Jonas and Hara, Nathan and Oshagh, Mahmoudreza and Sousa, Sérgio G. and Van Grootel, Valérie and Alonso Sobrino, Roi and Anglada-Escudé, Guillem and Bárczy, Tamás and Barrado, David and Barros, Susana C.C. and Baumjohann, Wolfgang and Beck, Mathias and Bekkelien, Anja and Benz, Willy and Billot, Nicolas and Bonfils, Xavier and Broeg, Christopher and Cabrera Perez, Juan and Collier Cameron, Andrew and Davies, Melvyn. B. and Deleuil, Magali and Delisle, Jean-Baptiste and Demangeon, Olivier D.S. and Demory, Brice-Olivier and Erikson, Anders and Fortier, Andrea and Fridlund, Malcolm and Futyan, David and Gandolfi, Davide and Garcia Muñoz, Antonio and Gillon, Michael and Guedel, Manuel and Heng, Kevin and Kiss, Laszlo and Laskar, Jacques and Lecavelier des Etangs, Alain and Lendl, Monika and Lovis, Christophe and Maxted, Pierre F. L. and Nascimbeni, Valerio and Olofsson, Göran and Osborn, Hugh P. and Pagano, Isabella and Palle, Enric and Piotto, Giampaolo and Pollacco, Don and Queloz, Didier and Rauer, Heike and Ragazzoni, Roberto and Ribas, Ignasi and Santos, Nuno C. and Scandariato, Gaetano and Ségransan, Damien and Simon, Attila E. and Smith, Alexis M S and Steller, Manfred and Szabó, Gyula M. and Thomas, Nicolas and Udry, Stephane and Walton, Nicholas A. (2021) Transit detection of the long-period volatile-rich super-Earth ν² Lupi d with CHEOPS. Nature Astronomy, 5, pp. 775-787. Nature Publishing Group. doi: 10.1038/s41550-021-01381-5. ISSN 2397-3366.

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Official URL: https://www.nature.com/articles/s41550-021-01381-5

Abstract

Exoplanets transiting bright nearby stars are key objects for advancing our knowledge of planetary formation and evolution. The wealth of photons from the host star gives detailed access to the atmospheric, interior and orbital properties of the planetary companions. ν2 Lupi (HD 136352) is a naked-eye (V = 5.78) Sun-like star that was discovered to host three low-mass planets with orbital periods of 11.6, 27.6 and 107.6 d via radial-velocity monitoring1. The two inner planets (b and c) were recently found to transit2, prompting a photometric follow-up by the brand new Characterising Exoplanets Satellite (CHEOPS). Here, we report that the outer planet d is also transiting, and measure its radius and mass to be 2.56 ± 0.09 R⊕ and 8.82 ± 0.94 M⊕, respectively. With its bright Sun-like star, long period and mild irradiation (~5.7 times the irradiation of Earth), ν2 Lupi d unlocks a completely new region in the parameter space of exoplanets amenable to detailed characterization. We refine the properties of all three planets: planet b probably has a rocky mostly dry composition, while planets c and d seem to have retained small hydrogen-helium envelopes and a possibly large water fraction. This diversity of planetary compositions makes the ν2 Lupi system an excellent laboratory for testing formation and evolution models of low-mass planets.

Item URL in elib:https://elib.dlr.de/144712/
Document Type:Article
Title:Transit detection of the long-period volatile-rich super-Earth ν² Lupi d with CHEOPS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Delrez, LaetitiaAstrobiology Research Unit, Université de Liège, Allée du 6 Août 19C, B-4000 Liège, Belgium; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 19C Allèe du 6 Août, B-4000 Liège, Belgium; Observatoire AstronomiquUNSPECIFIED
Ehrenreich, DavidUniversity of Geneva, SwitzerlandUNSPECIFIED
Alibert, YannPhysikalisches Institut, University of Bern, Bern, SwitzerlandUNSPECIFIED
Bonfanti, AndreaSpace Research Institute, Austrian Academy of Sciences, Graz, AustriaUNSPECIFIED
Borsato, LucaDipartimento di Fisica e Astronomia, Universita degli Studi di Padova, via Marzolo 8, 35131 Padova, Italyhttps://orcid.org/0000-0001-8627-9628
Fossati, LucaSpace Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8041 Graz, Austria 0000-0003-4426-9530UNSPECIFIED
Hooton, Matthew J.Physikalisches Institut, University of Bern, Bern, SwitzerlandUNSPECIFIED
Hoyer, SergioAix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, Francehttps://orcid.org/0000-0003-3477-2466
Pozuelos, Francisco J.Astrobiology Research Unit, Université de Liège, Liège, Belgium; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, BelgiumUNSPECIFIED
Salmon, SébastienSpace Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium; Observatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Sulis, SophiaAix Marseille Univ, CNRS, CNES, LAM, Marseille, FranceUNSPECIFIED
Wilson, Thomas G.Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, St Andrews, UKUNSPECIFIED
Adibekyan, VardanInstituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, PortugalUNSPECIFIED
Bourrier, VincentObservatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Brandeker, AlexisDepartment of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, SwedenUNSPECIFIED
Charnoz, SebastienInstitut de Physique du Globe de Paris, FranceUNSPECIFIED
Deline, AdrienObservatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Guterman, PascalAix Marseille University, CNRS, CNES, LAM, Marseille, France; Division Technique, INSU, La Seyne, FranceUNSPECIFIED
Haldemann, JonasDivision Technique, INSU, La Seyne, France); Haldemann, Jonas search by orcid (UNSPECIFIED
Hara, NathanObservatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Oshagh, MahmoudrezaInstitut für Astrophysik, Georg-August Universitaet Goettingen, Friedrich-Hund-Platz 1, 37077 Goettingen, GermanyUNSPECIFIED
Sousa, Sérgio G.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, PortugalUNSPECIFIED
Van Grootel, ValérieUniversité de Liege, BelgiumUNSPECIFIED
Alonso Sobrino, RoiInstituto de Astrof ́ısica de Canarias (IAC), E-38205 La Laguna, Tenerife,SpainUNSPECIFIED
Anglada-Escudé, GuillemInstitut de Ciéncies de l'Espai (ICE, CSIC), Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, SpainUNSPECIFIED
Bárczy, TamásAdmatis, Miskok, HungaryUNSPECIFIED
Barrado, DavidDepartamento de Astrofísica, Centro de Astrobiología (CSIC-INTA), Madrid, SpainUNSPECIFIED
Barros, Susana C.C.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, PortugalUNSPECIFIED
Baumjohann, WolfgangSpace Research Institute, Austrian Academy of Sciences, Graz, AustriaUNSPECIFIED
Beck, MathiasObservatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Bekkelien, AnjaObservatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Benz, WillyPhysikalisches Institut, Universität Bern, SchweizUNSPECIFIED
Billot, NicolasObservatoire de Genève, Université de Genève, Versoix, SwitzerlandUNSPECIFIED
Bonfils, XavierUniversité Grenoble Alpes, CNRS, IPAG, Grenoble, FranceUNSPECIFIED
Broeg, ChristopherPhysikalisches Institut, University of Bern, Bern, SwitzerlandUNSPECIFIED
Cabrera Perez, JuanJuan.Cabrera (at) dlr.dehttps://orcid.org/0000-0001-6653-5487
Collier Cameron, AndrewSUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UKhttps://orcid.org/0000-0002-8863-7828
Davies, Melvyn. B.Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, SwedenUNSPECIFIED
Deleuil, MagaliAix-Marseille Université, CNRS, CNES, LAM, Marseilles, FranceUNSPECIFIED
Delisle, Jean-BaptisteAix Marseille University, CNRS, CNES, LAM, Marseille, FranceUNSPECIFIED
Demangeon, Olivier D.S.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, PortugalUNSPECIFIED
Demory, Brice-OlivierUniversity of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, SwitzerlandUNSPECIFIED
Erikson, Andersanders.erikson (at) dlr.deUNSPECIFIED
Fortier, AndreaUniversity of Bern, SwitzerlandUNSPECIFIED
Fridlund, MalcolmDepartment of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden ; Leiden Observatory, University of Leiden, PO Box 9513, 2300 RA, Leiden, The Netherlands 0000-0003-2180-9936UNSPECIFIED
Futyan, DavidObservatoire de Genève, University of Geneva, SwitzerlandUNSPECIFIED
Gandolfi, DavideDipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, I-10125, Torino, Italy ); 0000-0001-8627-9628UNSPECIFIED
Garcia Muñoz, AntonioCenter for Astronomy and Astrophysics, Technical University Berlin, Berlin, GermanyUNSPECIFIED
Gillon, MichaelSpace sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, Bat. B5C, 4000 Liège, BelgiumUNSPECIFIED
Guedel, ManuelUniversity of Vienna, Department of Astrophysics, Türkenschanzstrasse 17, 1180, Vienna, AustriaUNSPECIFIED
Heng, KevinCenter for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, SwitzerlandUNSPECIFIED
Kiss, LaszloKonkoly Observatory, Research Centre for Astronomy and Earth, Budapest, HungaryUNSPECIFIED
Laskar, JacquesIMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, FranceUNSPECIFIED
Lecavelier des Etangs, AlainInstitut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, FranceUNSPECIFIED
Lendl, MonikaObservatoire de Genève, Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, SwitzerlandUNSPECIFIED
Lovis, ChristopheGeneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, SwitzerlandUNSPECIFIED
Maxted, Pierre F. L.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UKUNSPECIFIED
Nascimbeni, ValerioINAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, ItalyUNSPECIFIED
Olofsson, GöranDepartment of Astronomy, Stockholm University, AlbaNova University Center, 10691 Stockholm, SwedenUNSPECIFIED
Osborn, Hugh P.Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology Cambridge, MA 02139, USA; NCCR/Planet-S and Centre for Space and Habitability, University of Bern, Bern CH-3012, SwitzerlandUNSPECIFIED
Pagano, IsabellaOsservatorio Astrofisico di Catania – INAF, ItalyUNSPECIFIED
Palle, EnricInstituto de Astrofísica de Canarias (IAC), Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), Tenerife, SpainUNSPECIFIED
Piotto, GiampaoloINAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, ItalyUNSPECIFIED
Pollacco, DonDepartment 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, UKUNSPECIFIED
Queloz, DidierAstrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UKUNSPECIFIED
Rauer, Heikeheike.rauer (at) dlr.deUNSPECIFIED
Ragazzoni, RobertoOsservatorio Astronomico di Padova – INAF, ItalyUNSPECIFIED
Ribas, IgnasiInstitut de Ciencies de l'Espai (ICE, CSIC), Campus UAB, C/ de Can Magrans s/n, E-08193 Bellaterra, Spain ; Institut d'Estudis Espacials de Catalunya (IEEC), C/ Gran Capita 2-4, E-08034 Barcelona, Spain 0000-0002-6689-0312UNSPECIFIED
Santos, Nuno C.Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, Portugal; Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Porto, PortugalUNSPECIFIED
Scandariato, GaetanoNAF – Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, ItalyUNSPECIFIED
Ségransan, DamienGeneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, SwitzerlandUNSPECIFIED
Simon, Attila E.Center for Space and Habitability, University of Bern, SwitzerlandUNSPECIFIED
Smith, Alexis M SAlexis.Smith (at) dlr.dehttps://orcid.org/0000-0002-2386-4341
Steller, ManfredIWF, AustriaUNSPECIFIED
Szabó, Gyula M.Department of Experimental Physics & Astronomical Observatory, University of Szeged, Szeged, HungaryUNSPECIFIED
Thomas, NicolasPhysikalisches Institut, Sidlerstrasse 5, University of Bern, 3012, Bern, Switzerland, E-mail: nicolas.thomas (at) space.unibe.chUNSPECIFIED
Udry, StephaneObservatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, SwitzerlandUNSPECIFIED
Walton, Nicholas A.Institute of Astronomy, University of Cambridge, Cambridge, UKUNSPECIFIED
Date:2021
Journal or Publication Title:Nature Astronomy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:5
DOI :10.1038/s41550-021-01381-5
Page Range:pp. 775-787
Publisher:Nature Publishing Group
ISSN:2397-3366
Status:Published
Keywords:Astrophysics - Earth and Planetary Astrophysics
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 - CHEOPS Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF
Deposited By: Smith, Dr Alexis M S
Deposited On:21 Oct 2021 07:37
Last Modified:21 Oct 2021 07:37

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