Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2022 |
| Outros Autores: | , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
| DOI: | 10.1051/0004-6361/202142196 |
| Texto Completo: | http://hdl.handle.net/10316/97066 https://doi.org/10.1051/0004-6361/202142196 |
Resumo: | 21 pages, 9 figures, 11 tables, CHEOPS light curves available online, Published A&A |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPSPlanets and satellites: fundamental parametersPlanets and satellites: compositionPlanets and satellites: interiorsPlanets and satellites: individual: WASP-103bTechniques: photometricTime21 pages, 9 figures, 11 tables, CHEOPS light curves available online, Published A&AContext. Ultra-short period planets undergo strong tidal interactions with their host star which lead to planet deformation and orbital tidal decay. Aims. WASP-103b is the exoplanet with the highest expected deformation signature in its transit light curve and one of the shortest expected spiral-in times. Measuring the tidal deformation of the planet would allow us to estimate the second degree fluid Love number and gain insight into the planet’s internal structure. Moreover, measuring the tidal decay timescale would allow us to estimate the stellar tidal quality factor, which is key to constraining stellar physics. Methods. We obtained 12 transit light curves of WASP-103b with the CHaracterising ExOplanet Satellite (CHEOPS) to estimate the tidal deformation and tidal decay of this extreme system. We modelled the high-precision CHEOPS transit light curves together with systematic instrumental noise using multi-dimensional Gaussian process regression informed by a set of instrumental parameters. To model the tidal deformation, we used a parametrisation model which allowed us to determine the second degree fluid Love number of the planet. We combined our light curves with previously observed transits of WASP-103b with the Hubble Space Telescope (HST) and Spitzer to increase the signal-to-noise of the light curve and better distinguish the minute signal expected from the planetary deformation. Results. We estimate the radial Love number of WASP-103b to be hf = 1.59+0.45 −0.53. This is the first time that the tidal deformation is directly detected (at 3σ) from the transit light curve of an exoplanet. Combining the transit times derived from CHEOPS, HST, and Spitzer light curves with the other transit times available in the literature, we find no significant orbital period variation for WASP-103b. However, the data show a hint of an orbital period increase instead of a decrease, as is expected for tidal decay. This could be either due to a visual companion star if this star is bound, the Applegate effect, or a statistical artefact. Conclusions. The estimated Love number of WASP-103b is similar to Jupiter’s. This will allow us to constrain the internal structure and composition of WASP-103b, which could provide clues on the inflation of hot Jupiters. Future observations with James Webb Space Telescope can better constrain the radial Love number of WASP-103b due to their high signal-to-noise and the smaller signature of limb darkening in the infrared. A longer time baseline is needed to constrain the tidal decay in this system.EDP Sciences2022-01-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/97066http://hdl.handle.net/10316/97066https://doi.org/10.1051/0004-6361/202142196eng0004-63611432-0746http://arxiv.org/abs/2201.03328v1http://arxiv.org/abs/2201.03328v1https://www.aanda.org/articles/aa/pdf/2022/01/aa42196-21.pdfBarros, S. C. C.Akinsanm, B.G. Boué, G.Smith, A. M. S.Laskar, J.Ulmer-Moll, S.Lillo-Box, J.Correia, A. C. M.The CHEOPS teaminfo: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:RCAAP2022-05-25T06:57:13Zoai:estudogeral.uc.pt:10316/97066Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:15:11.696412Repositório 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 |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| title |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| spellingShingle |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS Barros, S. C. C. Planets and satellites: fundamental parameters Planets and satellites: composition Planets and satellites: interiors Planets and satellites: individual: WASP-103b Techniques: photometric Time Barros, S. C. C. Planets and satellites: fundamental parameters Planets and satellites: composition Planets and satellites: interiors Planets and satellites: individual: WASP-103b Techniques: photometric Time |
| title_short |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| title_full |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| title_fullStr |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| title_full_unstemmed |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| title_sort |
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS |
| author |
Barros, S. C. C. |
| author_facet |
Barros, S. C. C. Barros, S. C. C. Akinsanm, B. G. Boué, G. Smith, A. M. S. Laskar, J. Ulmer-Moll, S. Lillo-Box, J. Correia, A. C. M. The CHEOPS team Akinsanm, B. G. Boué, G. Smith, A. M. S. Laskar, J. Ulmer-Moll, S. Lillo-Box, J. Correia, A. C. M. The CHEOPS team |
| author_role |
author |
| author2 |
Akinsanm, B. G. Boué, G. Smith, A. M. S. Laskar, J. Ulmer-Moll, S. Lillo-Box, J. Correia, A. C. M. The CHEOPS team |
| author2_role |
author author author author author author author author |
| dc.contributor.author.fl_str_mv |
Barros, S. C. C. Akinsanm, B. G. Boué, G. Smith, A. M. S. Laskar, J. Ulmer-Moll, S. Lillo-Box, J. Correia, A. C. M. The CHEOPS team |
| dc.subject.por.fl_str_mv |
Planets and satellites: fundamental parameters Planets and satellites: composition Planets and satellites: interiors Planets and satellites: individual: WASP-103b Techniques: photometric Time |
| topic |
Planets and satellites: fundamental parameters Planets and satellites: composition Planets and satellites: interiors Planets and satellites: individual: WASP-103b Techniques: photometric Time |
| description |
21 pages, 9 figures, 11 tables, CHEOPS light curves available online, Published A&A |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022-01-10 |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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publishedVersion |
| dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/97066 http://hdl.handle.net/10316/97066 https://doi.org/10.1051/0004-6361/202142196 |
| url |
http://hdl.handle.net/10316/97066 https://doi.org/10.1051/0004-6361/202142196 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
0004-6361 1432-0746 http://arxiv.org/abs/2201.03328v1 http://arxiv.org/abs/2201.03328v1 https://www.aanda.org/articles/aa/pdf/2022/01/aa42196-21.pdf |
| 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 |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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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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1822181964480774144 |
| dc.identifier.doi.none.fl_str_mv |
10.1051/0004-6361/202142196 |