A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067

Author(s): R. Luque, H. P. Osborn, A. Leleu, E. Pallé, A. Bonfanti, O. Barragán, T. G. Wilson, C. Broeg, A. Collier Cameron, M. Lendl, P. F.L. Maxted, Y. Alibert, D. Gandolfi, J. B. Delisle, M. J. Hooton, J. A. Egger, G. Nowak, M. Lafarga, D. Rapetti, J. D. Twicken, J. C. Morales, I. Carleo, J. Orell-Miquel, V. Adibekyan, R. Alonso, A. Alqasim, P. J. Amado, D. R. Anderson, G. Anglada-Escudé, T. Bandy, T. Bárczy, D. Barrado Navascues, S. C.C. Barros, W. Baumjohann, D. Bayliss, J. L. Bean, M. Beck, T. Beck, W. Benz, N. Billot, X. Bonfils, L. Borsato, A. W. Boyle, A. Brandeker, E. M. Bryant, J. Cabrera, S. Carrazco-Gaxiola, D. Charbonneau, S. Charnoz, D. R. Ciardi, W. D. Cochran, K. A. Collins, I. J.M. Crossfield, Sz Csizmadia, P. E. Cubillos, F. Dai, M. B. Davies, H. J. Deeg, M. Deleuil, A. Deline, L. Delrez, O. D.S. Demangeon, B. O. Demory, D. Ehrenreich, A. Erikson, E. Esparza-Borges, B. Falk, A. Fortier, L. Fossati, M. Fridlund, A. Fukui, J. Garcia-Mejia, S. Gill, M. Gillon, E. Goffo, Y. Gómez Maqueo Chew, M. Güdel, E. W. Guenther, M. N. Günther, A. P. Hatzes, Ch Helling, K. M. Hesse, S. B. Howell, S. Hoyer, K. Ikuta, K. G. Isaak, J. M. Jenkins, T. Kagetani, L. L. Kiss, T. Kodama, J. Korth, K. W.F. Lam, J. Laskar, D. W. Latham, A. Lecavelier des Etangs, J. P.D. Leon, J. H. Livingston, D. Magrin, R. A. Matson, E. C. Matthews, C. Mordasini, M. Mori, M. Moyano, M. Munari, F. Murgas, N. Narita, V. Nascimbeni, G. Olofsson, H. L.M. Osborne, R. Ottensamer, I. Pagano, H. Parviainen, G. Peter, G. Piotto, D. Pollacco, D. Queloz, S. N. Quinn, A. Quirrenbach, R. Ragazzoni, N. Rando, F. Ratti, H. Rauer, S. Redfield, I. Ribas, G. R. Ricker, A. Rudat, L. Sabin, S. Salmon, N. C. Santos, G. Scandariato, N. Schanche, J. E. Schlieder, S. Seager, D. Ségransan, A. Shporer, A. E. Simon, A. M.S. Smith, S. G. Sousa, M. Stalport, Gy M. Szabó, N. Thomas, A. Tuson, S. Udry, A. M. Vanderburg, V. Van Eylen, V. Van Grootel, J. Venturini, I. Walter, N. A. Walton, N. Watanabe, J. N. Winn, T. Zingales
Abstract: Planets with radii between that of the Earth and Neptune (hereafter referred to as ‘sub-Neptunes’) are found in close-in orbits around more than half of all Sun-like stars^1,2. However, their composition, formation and evolution remain poorly understood³. The study of multiplanetary systems offers an opportunity to investigate the outcomes of planet formation and evolution while controlling for initial conditions and environment. Those in resonance (with their orbital periods related by a ratio of small integers) are particularly valuable because they imply a system architecture practically unchanged since its birth. Here we present the observations of six transiting planets around the bright nearby star HD 110067. We find that the planets follow a chain of resonant orbits. A dynamical study of the innermost planet triplet allowed the prediction and later confirmation of the orbits of the rest of the planets in the system. The six planets are found to be sub-Neptunes with radii ranging from 1.94R _⊕ to 2.85R _⊕. Three of the planets have measured masses, yielding low bulk densities that suggest the presence of large hydrogen-dominated atmospheres.
Organisation(s): Department of Astrophysics
External organisation(s): University of Chicago, Universität Bern, Massachusetts Institute of Technology, Université de Genève, Institute of Astrophysics of the Canary Islands, University of La Laguna, Österreichische Akademie der Wissenschaften (ÖAW), University of Oxford, University of St. Andrews, University of Warwick, Keele University, Università degli Studi di Torino, University of Cambridge, Nicolaus Copernicus University, National Aeronautics & Space Administration (NASA), Universities Space Research Association, SETI Institute, Spanish National Research Council (CSIC), Institute of Space Studies of Catalonia (IEEC), INAF-Osservatorio Astrofisico di Torino, Universidade do Porto, University College London, Instituto de Astrofísica de Andalucía (CSIC), Science and Operations Department - Science Division (SCI-SC), Admatis Ltd., European Space Astronomy Centre (ESA), University of Grenoble Alpes, Osservatorio Astronomico, California Institute of Technology (Caltech), Stockholm University, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Universidad Nacional Autonoma de Mexico, Georgia State University, RECONS Institute, Harvard-Smithsonian Center for Astrophysics, Université de Paris, University of Texas, Austin, University of Kansas, Lund University, Aix-Marseille Université, Université de Liège, Space Telescope Science Institute, Leiden University, Chalmers University of Technology, University of Tokyo, Thüringer Landessternwarte Tautenburg, Eötvös Loránd Research Network, Eötvös Loránd University Budapest, Lund Observatory, Université de recherche Paris Sciences et Lettres, Université Paris VI - Pierre-et-Marie-Curie, Astrobiology Center, National Astronomical Observatory of Japan, Graduate University for Advanced Studies , US Naval Observatory, Max-Planck-Institut für Astronomie, Universidad Católica del Norte, INAF-Osservatorio Astrofisico di Catania, University of Padova, Eidgenössische Technische Hochschule Zürich, Landessternwarte Königstuhl (LSW), Technische Universität Berlin, Freie Universität Berlin (FU), Wesleyan University, University of Maryland, College Park, Isotope Climatology and Environmental Research Centre, Princeton University
Journal: Nature
Volume: 623
Pages: 932-937
No. of pages: 61
ISSN: 0028-0836
DOI: https://doi.org/10.1038/s41586-023-06692-3
Publication date: 11-2023
Peer reviewed: Yes
Austrian Fields of Science 2012: 103003 Astronomy, 103004 Astrophysics, 103038 Space exploration
ASJC Scopus subject areas: Astronomy and Astrophysics
Portal url: https://ucrisportal.univie.ac.at/en/publications/10e9d4c2-203e-4fa1-a299-dfd6b70f5839

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