Six transiting planets and a chain of Laplace resonances in TOI-178
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/92634 https://doi.org/10.1051/0004-6361/202039767 |
Resumo: | Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parent protoplanetary disc was still present. In this context, TOI-178 has been the subject of particular attention since the first TESS observations hinted at a 2:3:3 resonant chain. Here we report the results of observations from CHEOPS, ESPRESSO, NGTS, and SPECULOOS with the aim of deciphering the peculiar orbital architecture of the system. We show that TOI-178 harbours at least six planets in the super-Earth to mini-Neptune regimes, with radii ranging from 1.152(-0.070/+0.073) to 2.87(-0.13/+0.14) Earth radii and periods of 1.91, 3.24, 6.56, 9.96, 15.23, and 20.71 days. All planets but the innermost one form a 2:4:6:9:12 chain of Laplace resonances, and the planetary densities show important variations from planet to planet, jumping from 1.02(+0.28/-0.23) to 0.177(+0.055/-0.061) times the Earth's density between planets c and d. Using Bayesian interior structure retrieval models, we show that the amount of gas in the planets does not vary in a monotonous way, contrary to what one would expect from simple formation and evolution models and unlike other known systems in a chain of Laplace resonances. The brightness of TOI-178 allows for a precise characterisation of its orbital architecture as well as of the physical nature of the six presently known transiting planets it harbours. The peculiar orbital configuration and the diversity in average density among the planets in the system will enable the study of interior planetary structures and atmospheric evolution, providing important clues on the formation of super-Earths and mini-Neptunes. |
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Six transiting planets and a chain of Laplace resonances in TOI-178TransitsMean-motion resonanceLaplace resonanceCHEOPSTESSNGTSSPECULOOSDetermining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parent protoplanetary disc was still present. In this context, TOI-178 has been the subject of particular attention since the first TESS observations hinted at a 2:3:3 resonant chain. Here we report the results of observations from CHEOPS, ESPRESSO, NGTS, and SPECULOOS with the aim of deciphering the peculiar orbital architecture of the system. We show that TOI-178 harbours at least six planets in the super-Earth to mini-Neptune regimes, with radii ranging from 1.152(-0.070/+0.073) to 2.87(-0.13/+0.14) Earth radii and periods of 1.91, 3.24, 6.56, 9.96, 15.23, and 20.71 days. All planets but the innermost one form a 2:4:6:9:12 chain of Laplace resonances, and the planetary densities show important variations from planet to planet, jumping from 1.02(+0.28/-0.23) to 0.177(+0.055/-0.061) times the Earth's density between planets c and d. Using Bayesian interior structure retrieval models, we show that the amount of gas in the planets does not vary in a monotonous way, contrary to what one would expect from simple formation and evolution models and unlike other known systems in a chain of Laplace resonances. The brightness of TOI-178 allows for a precise characterisation of its orbital architecture as well as of the physical nature of the six presently known transiting planets it harbours. The peculiar orbital configuration and the diversity in average density among the planets in the system will enable the study of interior planetary structures and atmospheric evolution, providing important clues on the formation of super-Earths and mini-Neptunes.EDP Sciences2021-01-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/92634http://hdl.handle.net/10316/92634https://doi.org/10.1051/0004-6361/202039767eng0004-63611432-0746http://arxiv.org/abs/2101.09260v1http://arxiv.org/abs/2101.09260v1Leleu, A.Alibert, Y.Hara, N. C.Hooton, M. J.Wilson, T. G.Robutel, P.Delisle, J. -B.Laskar, J.Hoyer, S.Lovis, C.Bryant, E. M.Murray, C. A.Nascimbeni, V.Nunes, N. J.Olofsson, G.Osborn, H. P.Oshagh, M.Ottensamer, R.Pagano, I.Pallé, E.Pedersen, P. P.Ducrot, E.Pepe, F. A.Persson, C. M.Peter, G.Piotto, G.Polenta, G.Pollacco, D.Poretti, E.Pozuelos, F. J.Queloz, D.Ragazzoni, R.Cabrera, J.Rando, N.Ratti, F.Rauer, H.Raynard, L.Rebolo, R.Reimers, C.Ribas, I.Santos, N. C.Scandariato, G.Schneider, J.Delrez, L.Sebastian, D.Sestovic, M.Simon, A. E.Smith, A. M. S.Sousa, S. G.Sozzetti, A.Steller, M.Mascareño, A. SuárezSzabó, Gy. M.Ségransan, D.Acton, J. S.Thomas, N.Thompson, S.Tilbrook, R. H.Triaud, A.Turner, O.Udry, S.Grootel, V. VanVenus, H.Verrecchia, F.Vines, J. I.Adibekyan, V.Walton, N. A.West, R. G.Wheatley, P. J.Wolter, D.Osorio, M. R. ZapateroAllart, R.Prieto, C. AllendeAlonso, R.Alves, D.Anderson, D. R.Angerhausen, D.Escudé, G. AngladaAsquier, J.Barrado, D.Barros, S. C. C.Baumjohann, W.Bayliss, D.Beck, M.Beck, T.Bekkelien, A.Benz, W.Billot, N.Bonfanti, A.Bonfils, X.Bouchy, F.Bourrier, V.Boué, G.Brandeker, A.Broeg, C.Buder, M.Burdanov, A.Burleigh, M. R.Bárczy, T.Cameron, A. C.Chamberlain, S.Charnoz, S.Cooke, B. F.Damme, C. Corral VanCorreia, A. C. M.Cristiani, S.Damasso, M.Davies, M. B.Deleuil, M.Demangeon, O. D. S.Demory, B. -O.Marcantonio, P. DiPersio, G. DiDumusque, X.Ehrenreich, D.Erikson, A.Figueira, P.Fortier, A.Fossati, L.Fridlund, M.Futyan, D.Gandolfi, D.Muñoz, A. GarcíaGarcia, L. J.Gill, S.Gillen, E.Gillon, M.Goad, M. R.Hernández, J. I. GonzálezGuedel, M.Günther, M. N.Haldemann, J.Henderson, B.Heng, K.Hogan, A. E.Isaak, K.Jehin, E.Jenkins, J. S.Jordán, A.Kiss, L.Kristiansen, M. H.Lam, K.Lavie, B.Etangs, A. Lecavelier desLendl, M.Lillo-Box, J.Curto, G. LoMagrin, D.Martins, C. J. A. P.Maxted, P. F. L.McCormac, J.Mehner, A.Micela, G.Molaro, P.Moyano, M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-05-25T06:00:34Zoai:estudogeral.uc.pt:10316/92634Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:11:41.445197Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
title |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
spellingShingle |
Six transiting planets and a chain of Laplace resonances in TOI-178 Leleu, A. Transits Mean-motion resonance Laplace resonance CHEOPS TESS NGTS SPECULOOS |
title_short |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
title_full |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
title_fullStr |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
title_full_unstemmed |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
title_sort |
Six transiting planets and a chain of Laplace resonances in TOI-178 |
author |
Leleu, A. |
author_facet |
Leleu, A. Alibert, Y. Hara, N. C. Hooton, M. J. Wilson, T. G. Robutel, P. Delisle, J. -B. Laskar, J. Hoyer, S. Lovis, C. Bryant, E. M. Murray, C. A. Nascimbeni, V. Nunes, N. J. Olofsson, G. Osborn, H. P. Oshagh, M. Ottensamer, R. Pagano, I. Pallé, E. Pedersen, P. P. Ducrot, E. Pepe, F. A. Persson, C. M. Peter, G. Piotto, G. Polenta, G. Pollacco, D. Poretti, E. Pozuelos, F. J. Queloz, D. Ragazzoni, R. Cabrera, J. Rando, N. Ratti, F. Rauer, H. Raynard, L. Rebolo, R. Reimers, C. Ribas, I. Santos, N. C. Scandariato, G. Schneider, J. Delrez, L. Sebastian, D. Sestovic, M. Simon, A. E. Smith, A. M. S. Sousa, S. G. Sozzetti, A. Steller, M. Mascareño, A. Suárez Szabó, Gy. M. Ségransan, D. Acton, J. S. Thomas, N. Thompson, S. Tilbrook, R. H. Triaud, A. Turner, O. Udry, S. Grootel, V. Van Venus, H. Verrecchia, F. Vines, J. I. Adibekyan, V. Walton, N. A. West, R. G. Wheatley, P. J. Wolter, D. Osorio, M. R. Zapatero Allart, R. Prieto, C. Allende Alonso, R. Alves, D. Anderson, D. R. Angerhausen, D. Escudé, G. Anglada Asquier, J. Barrado, D. Barros, S. C. C. Baumjohann, W. Bayliss, D. Beck, M. Beck, T. Bekkelien, A. Benz, W. Billot, N. Bonfanti, A. Bonfils, X. Bouchy, F. Bourrier, V. Boué, G. Brandeker, A. Broeg, C. Buder, M. Burdanov, A. Burleigh, M. R. Bárczy, T. Cameron, A. C. Chamberlain, S. Charnoz, S. Cooke, B. F. Damme, C. Corral Van Correia, A. C. M. Cristiani, S. Damasso, M. Davies, M. B. Deleuil, M. Demangeon, O. D. S. Demory, B. -O. Marcantonio, P. Di Persio, G. Di Dumusque, X. Ehrenreich, D. Erikson, A. Figueira, P. Fortier, A. Fossati, L. Fridlund, M. Futyan, D. Gandolfi, D. Muñoz, A. García Garcia, L. J. Gill, S. Gillen, E. Gillon, M. Goad, M. R. Hernández, J. I. González Guedel, M. Günther, M. N. Haldemann, J. Henderson, B. Heng, K. Hogan, A. E. Isaak, K. Jehin, E. Jenkins, J. S. Jordán, A. Kiss, L. Kristiansen, M. H. Lam, K. Lavie, B. Etangs, A. Lecavelier des Lendl, M. Lillo-Box, J. Curto, G. Lo Magrin, D. Martins, C. J. A. P. Maxted, P. F. L. McCormac, J. Mehner, A. Micela, G. Molaro, P. Moyano, M. |
author_role |
author |
author2 |
Alibert, Y. Hara, N. C. Hooton, M. J. Wilson, T. G. Robutel, P. Delisle, J. -B. Laskar, J. Hoyer, S. Lovis, C. Bryant, E. M. Murray, C. A. Nascimbeni, V. Nunes, N. J. Olofsson, G. Osborn, H. P. Oshagh, M. Ottensamer, R. Pagano, I. Pallé, E. Pedersen, P. P. Ducrot, E. Pepe, F. A. Persson, C. M. Peter, G. Piotto, G. Polenta, G. Pollacco, D. Poretti, E. Pozuelos, F. J. Queloz, D. Ragazzoni, R. Cabrera, J. Rando, N. Ratti, F. Rauer, H. Raynard, L. Rebolo, R. Reimers, C. Ribas, I. Santos, N. C. Scandariato, G. Schneider, J. Delrez, L. Sebastian, D. Sestovic, M. Simon, A. E. Smith, A. M. S. Sousa, S. G. Sozzetti, A. Steller, M. Mascareño, A. Suárez Szabó, Gy. M. Ségransan, D. Acton, J. S. Thomas, N. Thompson, S. Tilbrook, R. H. Triaud, A. Turner, O. Udry, S. Grootel, V. Van Venus, H. Verrecchia, F. Vines, J. I. Adibekyan, V. Walton, N. A. West, R. G. Wheatley, P. J. Wolter, D. Osorio, M. R. Zapatero Allart, R. Prieto, C. Allende Alonso, R. Alves, D. Anderson, D. R. Angerhausen, D. Escudé, G. Anglada Asquier, J. Barrado, D. Barros, S. C. C. Baumjohann, W. Bayliss, D. Beck, M. Beck, T. Bekkelien, A. Benz, W. Billot, N. Bonfanti, A. Bonfils, X. Bouchy, F. Bourrier, V. Boué, G. Brandeker, A. Broeg, C. Buder, M. Burdanov, A. Burleigh, M. R. Bárczy, T. Cameron, A. C. Chamberlain, S. Charnoz, S. Cooke, B. F. Damme, C. Corral Van Correia, A. C. M. Cristiani, S. Damasso, M. Davies, M. B. Deleuil, M. Demangeon, O. D. S. Demory, B. -O. Marcantonio, P. Di Persio, G. Di Dumusque, X. Ehrenreich, D. Erikson, A. Figueira, P. Fortier, A. Fossati, L. Fridlund, M. Futyan, D. Gandolfi, D. Muñoz, A. García Garcia, L. J. Gill, S. Gillen, E. Gillon, M. Goad, M. R. Hernández, J. I. González Guedel, M. Günther, M. N. Haldemann, J. Henderson, B. Heng, K. Hogan, A. E. Isaak, K. Jehin, E. Jenkins, J. S. Jordán, A. Kiss, L. Kristiansen, M. H. Lam, K. Lavie, B. Etangs, A. Lecavelier des Lendl, M. Lillo-Box, J. Curto, G. Lo Magrin, D. Martins, C. J. A. P. Maxted, P. F. L. McCormac, J. Mehner, A. Micela, G. Molaro, P. Moyano, M. |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Leleu, A. Alibert, Y. Hara, N. C. Hooton, M. J. Wilson, T. G. Robutel, P. Delisle, J. -B. Laskar, J. Hoyer, S. Lovis, C. Bryant, E. M. Murray, C. A. Nascimbeni, V. Nunes, N. J. Olofsson, G. Osborn, H. P. Oshagh, M. Ottensamer, R. Pagano, I. Pallé, E. Pedersen, P. P. Ducrot, E. Pepe, F. A. Persson, C. M. Peter, G. Piotto, G. Polenta, G. Pollacco, D. Poretti, E. Pozuelos, F. J. Queloz, D. Ragazzoni, R. Cabrera, J. Rando, N. Ratti, F. Rauer, H. Raynard, L. Rebolo, R. Reimers, C. Ribas, I. Santos, N. C. Scandariato, G. Schneider, J. Delrez, L. Sebastian, D. Sestovic, M. Simon, A. E. Smith, A. M. S. Sousa, S. G. Sozzetti, A. Steller, M. Mascareño, A. Suárez Szabó, Gy. M. Ségransan, D. Acton, J. S. Thomas, N. Thompson, S. Tilbrook, R. H. Triaud, A. Turner, O. Udry, S. Grootel, V. Van Venus, H. Verrecchia, F. Vines, J. I. Adibekyan, V. Walton, N. A. West, R. G. Wheatley, P. J. Wolter, D. Osorio, M. R. Zapatero Allart, R. Prieto, C. Allende Alonso, R. Alves, D. Anderson, D. R. Angerhausen, D. Escudé, G. Anglada Asquier, J. Barrado, D. Barros, S. C. C. Baumjohann, W. Bayliss, D. Beck, M. Beck, T. Bekkelien, A. Benz, W. Billot, N. Bonfanti, A. Bonfils, X. Bouchy, F. Bourrier, V. Boué, G. Brandeker, A. Broeg, C. Buder, M. Burdanov, A. Burleigh, M. R. Bárczy, T. Cameron, A. C. Chamberlain, S. Charnoz, S. Cooke, B. F. Damme, C. Corral Van Correia, A. C. M. Cristiani, S. Damasso, M. Davies, M. B. Deleuil, M. Demangeon, O. D. S. Demory, B. -O. Marcantonio, P. Di Persio, G. Di Dumusque, X. Ehrenreich, D. Erikson, A. Figueira, P. Fortier, A. Fossati, L. Fridlund, M. Futyan, D. Gandolfi, D. Muñoz, A. García Garcia, L. J. Gill, S. Gillen, E. Gillon, M. Goad, M. R. Hernández, J. I. González Guedel, M. Günther, M. N. Haldemann, J. Henderson, B. Heng, K. Hogan, A. E. Isaak, K. Jehin, E. Jenkins, J. S. Jordán, A. Kiss, L. Kristiansen, M. H. Lam, K. Lavie, B. Etangs, A. Lecavelier des Lendl, M. Lillo-Box, J. Curto, G. Lo Magrin, D. Martins, C. J. A. P. Maxted, P. F. L. McCormac, J. Mehner, A. Micela, G. Molaro, P. Moyano, M. |
dc.subject.por.fl_str_mv |
Transits Mean-motion resonance Laplace resonance CHEOPS TESS NGTS SPECULOOS |
topic |
Transits Mean-motion resonance Laplace resonance CHEOPS TESS NGTS SPECULOOS |
description |
Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parent protoplanetary disc was still present. In this context, TOI-178 has been the subject of particular attention since the first TESS observations hinted at a 2:3:3 resonant chain. Here we report the results of observations from CHEOPS, ESPRESSO, NGTS, and SPECULOOS with the aim of deciphering the peculiar orbital architecture of the system. We show that TOI-178 harbours at least six planets in the super-Earth to mini-Neptune regimes, with radii ranging from 1.152(-0.070/+0.073) to 2.87(-0.13/+0.14) Earth radii and periods of 1.91, 3.24, 6.56, 9.96, 15.23, and 20.71 days. All planets but the innermost one form a 2:4:6:9:12 chain of Laplace resonances, and the planetary densities show important variations from planet to planet, jumping from 1.02(+0.28/-0.23) to 0.177(+0.055/-0.061) times the Earth's density between planets c and d. Using Bayesian interior structure retrieval models, we show that the amount of gas in the planets does not vary in a monotonous way, contrary to what one would expect from simple formation and evolution models and unlike other known systems in a chain of Laplace resonances. The brightness of TOI-178 allows for a precise characterisation of its orbital architecture as well as of the physical nature of the six presently known transiting planets it harbours. The peculiar orbital configuration and the diversity in average density among the planets in the system will enable the study of interior planetary structures and atmospheric evolution, providing important clues on the formation of super-Earths and mini-Neptunes. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/92634 http://hdl.handle.net/10316/92634 https://doi.org/10.1051/0004-6361/202039767 |
url |
http://hdl.handle.net/10316/92634 https://doi.org/10.1051/0004-6361/202039767 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0004-6361 1432-0746 http://arxiv.org/abs/2101.09260v1 http://arxiv.org/abs/2101.09260v1 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
EDP Sciences |
publisher.none.fl_str_mv |
EDP Sciences |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799134013542105088 |