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:

Authors	Institution or Email of Authors	Author's ORCID iD
Delrez, Laetitia	Astrobiology 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 Astronomiqu	UNSPECIFIED
Ehrenreich, David	University of Geneva, Switzerland	UNSPECIFIED
Alibert, Yann	Physikalisches Institut, University of Bern, Bern, Switzerland	UNSPECIFIED
Bonfanti, Andrea	Space Research Institute, Austrian Academy of Sciences, Graz, Austria	UNSPECIFIED
Borsato, Luca	Dipartimento di Fisica e Astronomia, Universita degli Studi di Padova, via Marzolo 8, 35131 Padova, Italy	https://orcid.org/0000-0001-8627-9628
Fossati, Luca	Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8041 Graz, Austria 0000-0003-4426-9530	UNSPECIFIED
Hooton, Matthew J.	Physikalisches Institut, University of Bern, Bern, Switzerland	UNSPECIFIED
Hoyer, Sergio	Aix Marseille Univ, CNRS, CNES, LAM, 38 rue Frédéric Joliot-Curie, 13388 Marseille, France	https://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, Belgium	UNSPECIFIED
Salmon, Sébastien	Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium; Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Sulis, Sophia	Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France	UNSPECIFIED
Wilson, Thomas G.	Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, St Andrews, UK	UNSPECIFIED
Adibekyan, Vardan	Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, Portugal	UNSPECIFIED
Bourrier, Vincent	Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Brandeker, Alexis	Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden	UNSPECIFIED
Charnoz, Sebastien	Institut de Physique du Globe de Paris, France	UNSPECIFIED
Deline, Adrien	Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Guterman, Pascal	Aix Marseille University, CNRS, CNES, LAM, Marseille, France; Division Technique, INSU, La Seyne, France	UNSPECIFIED
Haldemann, Jonas	Division Technique, INSU, La Seyne, France); Haldemann, Jonas search by orcid (	UNSPECIFIED
Hara, Nathan	Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Oshagh, Mahmoudreza	Institut für Astrophysik, Georg-August Universitaet Goettingen, Friedrich-Hund-Platz 1, 37077 Goettingen, Germany	UNSPECIFIED
Sousa, Sérgio G.	Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, Portugal	UNSPECIFIED
Van Grootel, Valérie	Université de Liege, Belgium	UNSPECIFIED
Alonso Sobrino, Roi	Instituto de Astrof ́ısica de Canarias (IAC), E-38205 La Laguna, Tenerife,Spain	UNSPECIFIED
Anglada-Escudé, Guillem	Institut de Ciéncies de l'Espai (ICE, CSIC), Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain	UNSPECIFIED
Bárczy, Tamás	Admatis, Miskok, Hungary	UNSPECIFIED
Barrado, David	Departamento de Astrofísica, Centro de Astrobiología (CSIC-INTA), Madrid, Spain	UNSPECIFIED
Barros, Susana C.C.	Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, Portugal	UNSPECIFIED
Baumjohann, Wolfgang	Space Research Institute, Austrian Academy of Sciences, Graz, Austria	UNSPECIFIED
Beck, Mathias	Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Bekkelien, Anja	Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Benz, Willy	Physikalisches Institut, Universität Bern, Schweiz	UNSPECIFIED
Billot, Nicolas	Observatoire de Genève, Université de Genève, Versoix, Switzerland	UNSPECIFIED
Bonfils, Xavier	Université Grenoble Alpes, CNRS, IPAG, Grenoble, France	UNSPECIFIED
Broeg, Christopher	Physikalisches Institut, University of Bern, Bern, Switzerland	UNSPECIFIED
Cabrera Perez, Juan	UNSPECIFIED	https://orcid.org/0000-0001-6653-5487
Collier Cameron, Andrew	SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK	https://orcid.org/0000-0002-8863-7828
Davies, Melvyn. B.	Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, Sweden	UNSPECIFIED
Deleuil, Magali	Aix-Marseille Université, CNRS, CNES, LAM, Marseilles, France	UNSPECIFIED
Delisle, Jean-Baptiste	Aix Marseille University, CNRS, CNES, LAM, Marseille, France	UNSPECIFIED
Demangeon, Olivier D.S.	Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Porto, Portugal	UNSPECIFIED
Demory, Brice-Olivier	University of Bern, Center for Space and Habitability, Gesellschaftsstrasse 6, CH-3012 Bern, Switzerland	UNSPECIFIED
Erikson, Anders	UNSPECIFIED	UNSPECIFIED
Fortier, Andrea	University of Bern, Switzerland	UNSPECIFIED
Fridlund, Malcolm	Department 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 0000-0003-2180-9936	UNSPECIFIED
Futyan, David	Observatoire de Genève, University of Geneva, Switzerland	UNSPECIFIED
Gandolfi, Davide	Dipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, I-10125, Torino, Italy ); 0000-0001-8627-9628	UNSPECIFIED
Garcia Muñoz, Antonio	Center for Astronomy and Astrophysics, Technical University Berlin, Berlin, Germany	UNSPECIFIED
Gillon, Michael	Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août 17, Bat. B5C, 4000 Liège, Belgium	UNSPECIFIED
Guedel, Manuel	University of Vienna, Department of Astrophysics, Türkenschanzstrasse 17, 1180, Vienna, Austria	UNSPECIFIED
Heng, Kevin	Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland	UNSPECIFIED
Kiss, Laszlo	Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, Hungary	UNSPECIFIED
Laskar, Jacques	IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, France	UNSPECIFIED
Lecavelier des Etangs, Alain	Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, France	UNSPECIFIED
Lendl, Monika	Observatoire de Genève, Université de Genève, Chemin des Maillettes 51, 1290 Sauverny, Switzerland	UNSPECIFIED
Lovis, Christophe	Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland	UNSPECIFIED
Maxted, Pierre F. L.	Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK	UNSPECIFIED
Nascimbeni, Valerio	INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy	UNSPECIFIED
Olofsson, Göran	Department of Astronomy, Stockholm University, AlbaNova University Center, 10691 Stockholm, Sweden	UNSPECIFIED
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, Switzerland	UNSPECIFIED
Pagano, Isabella	Osservatorio Astrofisico di Catania – INAF, Italy	UNSPECIFIED
Palle, Enric	Instituto de Astrofísica de Canarias (IAC), Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), Tenerife, Spain	UNSPECIFIED
Piotto, Giampaolo	INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, Italy	UNSPECIFIED
Pollacco, Don	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, UK	UNSPECIFIED
Queloz, Didier	Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK	UNSPECIFIED
Rauer, Heike	UNSPECIFIED	UNSPECIFIED
Ragazzoni, Roberto	Osservatorio Astronomico di Padova – INAF, Italy	UNSPECIFIED
Ribas, Ignasi	Institut 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 0000-0002-6689-0312	UNSPECIFIED
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, Portugal	UNSPECIFIED
Scandariato, Gaetano	NAF – Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy	UNSPECIFIED
Ségransan, Damien	Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, Switzerland	UNSPECIFIED
Simon, Attila E.	Center for Space and Habitability, University of Bern, Switzerland	UNSPECIFIED
Smith, Alexis M S	UNSPECIFIED	https://orcid.org/0000-0002-2386-4341
Steller, Manfred	IWF, Austria	UNSPECIFIED
Szabó, Gyula M.	Department of Experimental Physics & Astronomical Observatory, University of Szeged, Szeged, Hungary	UNSPECIFIED
Thomas, Nicolas	UNSPECIFIED	UNSPECIFIED
Udry, Stephane	Observatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, Switzerland	UNSPECIFIED
Walton, Nicholas A.	Institute of Astronomy, University of Cambridge, Cambridge, UK	UNSPECIFIED

Date:

2021

Journal or Publication Title:

Nature Astronomy

Refereed publication:

Yes

Open Access:

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

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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