Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets
- Autores
- Hébrard, G.; Diaz, Rodrigo Fernando; Correia, A.C.M.; Collier Cameron, A.; Laskar, J.; Pollacco, D.; Almenara, J. M.; Anderson, D.R.; Barros, S.C.C.; Boisse, I.; Bonomo, A.S.; Bouchy, F.; Boué, G.; Boumis, P.; Brown, D.J.A.; Dalal, S.; Deleuil, M.; Demangeon, O.D.S.; Doyle, A.P.; Haswell, C.A.; Hellier, C.; Osborn, H.; Kiefer, F.; Kolb, U.C.; Lam, K.; Lecavelier Des Étangs, A.; Lopez, T.; Martin Lagarde, M.; Maxted, P.; McCormac, J.; Nielsen, Louise D.; Pallé, E.; Prieto Arranz, J.; Queloz, D.; Santerne, A.; Smalley, B.; Turner, O.; Udry, S.; Verilhac, D.; West, R.; Wheatley, P.J.; Wilson, P.A.
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present the discovery and characterization of WASP-148, a new extrasolar system that includes at least two giant planets. The host star is a slowly rotating inactive late-G dwarf with a V = 12 magnitude. The planet WASP-148b is a hot Jupiter of 0.72 RJup and 0.29 MJup that transits its host with an orbital period of 8.80 days. We found the planetary candidate with the SuperWASP photometric survey, then characterized it with the SOPHIE spectrograph. Our radial velocity measurements subsequently revealed a second planet in the system, WASP-148c, with an orbital period of 34.5 days and a minimum mass of 0.40 MJup. No transits of this outer planet were detected. The orbits of both planets are eccentric and fall near the 4:1 mean-motion resonances. This configuration is stable on long timescales, but induces dynamical interactions so that the orbits differ slightly from purely Keplerian orbits. In particular, WASP-148b shows transit-timing variations of typically 15 min, making it the first interacting system with transit-timing variations that is detected on ground-based light curves. We establish that the mutual inclination of the orbital plane of the two planets cannot be higher than 35°, and the true mass of WASP-148c is below 0.60 MJup. We present photometric and spectroscopic observations of this system that cover a time span of ten years. We also provide their Keplerian and Newtonian analyses; these analyses should be significantly improved through future TESS observations.
Fil: Hébrard, G.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia. Université d’Aix-Marseille; Francia
Fil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Físicas. - Universidad Nacional de San Martín. Instituto de Ciencias Físicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
Fil: Correia, A.C.M.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Universidad de Coimbra; Portugal. Sorbonne University; Francia
Fil: Collier Cameron, A.. University of St. Andrews; Reino Unido
Fil: Laskar, J.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Sorbonne University; Francia
Fil: Pollacco, D.. University of Warwick; Reino Unido
Fil: Almenara, J. M.. Universite Grenoble Alpes; Francia
Fil: Anderson, D.R.. University of Warwick; Reino Unido. Keele University; Reino Unido
Fil: Barros, S.C.C.. Universidad de Porto; Portugal
Fil: Boisse, I.. Universite de Provence; Francia
Fil: Bonomo, A.S.. Istituto Nazionale di Astrofisica; Italia
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Boué, G.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Boumis, P.. National Observatory Of Athens; Grecia
Fil: Brown, D.J.A.. University of Warwick; Reino Unido
Fil: Dalal, S.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Deleuil, M.. Universite de Provence; Francia
Fil: Demangeon, O.D.S.. Universidad de Porto; Portugal
Fil: Doyle, A.P.. University of Warwick; Reino Unido
Fil: Haswell, C.A.. The Open University (ou); Reino Unido
Fil: Hellier, C.. Keele University; Reino Unido
Fil: Osborn, H.. University of Bern; Suiza. University of Warwick; Reino Unido. Universite de Provence; Francia
Fil: Kiefer, F.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Kolb, U.C.. The Open University (ou); Reino Unido
Fil: Lam, K.. Technishe Universitat Berlin; Alemania. University of Warwick; Reino Unido
Fil: Lecavelier Des Étangs, A.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Lopez, T.. Universite de Provence; Francia
Fil: Martin Lagarde, M.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Maxted, P.. Keele University; Reino Unido
Fil: McCormac, J.. University of Warwick; Reino Unido
Fil: Nielsen, Louise D.. Universidad de Ginebra; Suiza
Fil: Pallé, E.. Instituto de Astrofísica de Canarias; España. Universidad de La Laguna; España
Fil: Prieto Arranz, J.. Universidad de La Laguna; España. Instituto de Astrofísica de Canarias; España
Fil: Queloz, D.. Universidad de Ginebra; Suiza. Cavendish Laboratory; Reino Unido
Fil: Santerne, A.. Universite de Provence; Francia
Fil: Smalley, B.. Keele University; Reino Unido
Fil: Turner, O.. Universidad de Ginebra; Suiza
Fil: Udry, S.. Universidad de Ginebra; Suiza
Fil: Verilhac, D.. Observatoire Hubert-reeves; Francia
Fil: West, R.. University of Warwick; Reino Unido
Fil: Wheatley, P.J.. University of Warwick; Reino Unido
Fil: Wilson, P.A.. University of Warwick; Reino Unido - Materia
-
PLANETARY SYSTEMS
TECHNIQUES: PHOTOMETRIC
TECHNIQUES: RADIAL VELOCITIES
TECHNIQUES: SPECTROSCOPIC - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/173419
Ver los metadatos del registro completo
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Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planetsHébrard, G.Diaz, Rodrigo FernandoCorreia, A.C.M.Collier Cameron, A.Laskar, J.Pollacco, D.Almenara, J. M.Anderson, D.R.Barros, S.C.C.Boisse, I.Bonomo, A.S.Bouchy, F.Boué, G.Boumis, P.Brown, D.J.A.Dalal, S.Deleuil, M.Demangeon, O.D.S.Doyle, A.P.Haswell, C.A.Hellier, C.Osborn, H.Kiefer, F.Kolb, U.C.Lam, K.Lecavelier Des Étangs, A.Lopez, T.Martin Lagarde, M.Maxted, P.McCormac, J.Nielsen, Louise D.Pallé, E.Prieto Arranz, J.Queloz, D.Santerne, A.Smalley, B.Turner, O.Udry, S.Verilhac, D.West, R.Wheatley, P.J.Wilson, P.A.PLANETARY SYSTEMSTECHNIQUES: PHOTOMETRICTECHNIQUES: RADIAL VELOCITIESTECHNIQUES: SPECTROSCOPIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the discovery and characterization of WASP-148, a new extrasolar system that includes at least two giant planets. The host star is a slowly rotating inactive late-G dwarf with a V = 12 magnitude. The planet WASP-148b is a hot Jupiter of 0.72 RJup and 0.29 MJup that transits its host with an orbital period of 8.80 days. We found the planetary candidate with the SuperWASP photometric survey, then characterized it with the SOPHIE spectrograph. Our radial velocity measurements subsequently revealed a second planet in the system, WASP-148c, with an orbital period of 34.5 days and a minimum mass of 0.40 MJup. No transits of this outer planet were detected. The orbits of both planets are eccentric and fall near the 4:1 mean-motion resonances. This configuration is stable on long timescales, but induces dynamical interactions so that the orbits differ slightly from purely Keplerian orbits. In particular, WASP-148b shows transit-timing variations of typically 15 min, making it the first interacting system with transit-timing variations that is detected on ground-based light curves. We establish that the mutual inclination of the orbital plane of the two planets cannot be higher than 35°, and the true mass of WASP-148c is below 0.60 MJup. We present photometric and spectroscopic observations of this system that cover a time span of ten years. We also provide their Keplerian and Newtonian analyses; these analyses should be significantly improved through future TESS observations.Fil: Hébrard, G.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia. Université d’Aix-Marseille; FranciaFil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Físicas. - Universidad Nacional de San Martín. Instituto de Ciencias Físicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; ArgentinaFil: Correia, A.C.M.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Universidad de Coimbra; Portugal. Sorbonne University; FranciaFil: Collier Cameron, A.. University of St. Andrews; Reino UnidoFil: Laskar, J.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Sorbonne University; FranciaFil: Pollacco, D.. University of Warwick; Reino UnidoFil: Almenara, J. M.. Universite Grenoble Alpes; FranciaFil: Anderson, D.R.. University of Warwick; Reino Unido. Keele University; Reino UnidoFil: Barros, S.C.C.. Universidad de Porto; PortugalFil: Boisse, I.. Universite de Provence; FranciaFil: Bonomo, A.S.. Istituto Nazionale di Astrofisica; ItaliaFil: Bouchy, F.. Universidad de Ginebra; SuizaFil: Boué, G.. Centre National de la Recherche Scientifique. Observatoire de Paris; FranciaFil: Boumis, P.. National Observatory Of Athens; GreciaFil: Brown, D.J.A.. University of Warwick; Reino UnidoFil: Dalal, S.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; FranciaFil: Deleuil, M.. Universite de Provence; FranciaFil: Demangeon, O.D.S.. Universidad de Porto; PortugalFil: Doyle, A.P.. University of Warwick; Reino UnidoFil: Haswell, C.A.. The Open University (ou); Reino UnidoFil: Hellier, C.. Keele University; Reino UnidoFil: Osborn, H.. University of Bern; Suiza. University of Warwick; Reino Unido. Universite de Provence; FranciaFil: Kiefer, F.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique. Observatoire de Paris; FranciaFil: Kolb, U.C.. The Open University (ou); Reino UnidoFil: Lam, K.. Technishe Universitat Berlin; Alemania. University of Warwick; Reino UnidoFil: Lecavelier Des Étangs, A.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; FranciaFil: Lopez, T.. Universite de Provence; FranciaFil: Martin Lagarde, M.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; FranciaFil: Maxted, P.. Keele University; Reino UnidoFil: McCormac, J.. University of Warwick; Reino UnidoFil: Nielsen, Louise D.. Universidad de Ginebra; SuizaFil: Pallé, E.. Instituto de Astrofísica de Canarias; España. Universidad de La Laguna; EspañaFil: Prieto Arranz, J.. Universidad de La Laguna; España. Instituto de Astrofísica de Canarias; EspañaFil: Queloz, D.. Universidad de Ginebra; Suiza. Cavendish Laboratory; Reino UnidoFil: Santerne, A.. Universite de Provence; FranciaFil: Smalley, B.. Keele University; Reino UnidoFil: Turner, O.. Universidad de Ginebra; SuizaFil: Udry, S.. Universidad de Ginebra; SuizaFil: Verilhac, D.. Observatoire Hubert-reeves; FranciaFil: West, R.. University of Warwick; Reino UnidoFil: Wheatley, P.J.. University of Warwick; Reino UnidoFil: Wilson, P.A.. University of Warwick; Reino UnidoEDP Sciences2020-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/173419Hébrard, G.; Diaz, Rodrigo Fernando; Correia, A.C.M.; Collier Cameron, A.; Laskar, J.; et al.; Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets; EDP Sciences; Astronomy and Astrophysics; 640; A32; 8-2020; 1-160004-63611432-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202038296info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2020/08/aa38296-20/aa38296-20.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:07:33Zoai:ri.conicet.gov.ar:11336/173419instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:07:33.397CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| title |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| spellingShingle |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets Hébrard, G. PLANETARY SYSTEMS TECHNIQUES: PHOTOMETRIC TECHNIQUES: RADIAL VELOCITIES TECHNIQUES: SPECTROSCOPIC |
| title_short |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| title_full |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| title_fullStr |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| title_full_unstemmed |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| title_sort |
Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets |
| dc.creator.none.fl_str_mv |
Hébrard, G. Diaz, Rodrigo Fernando Correia, A.C.M. Collier Cameron, A. Laskar, J. Pollacco, D. Almenara, J. M. Anderson, D.R. Barros, S.C.C. Boisse, I. Bonomo, A.S. Bouchy, F. Boué, G. Boumis, P. Brown, D.J.A. Dalal, S. Deleuil, M. Demangeon, O.D.S. Doyle, A.P. Haswell, C.A. Hellier, C. Osborn, H. Kiefer, F. Kolb, U.C. Lam, K. Lecavelier Des Étangs, A. Lopez, T. Martin Lagarde, M. Maxted, P. McCormac, J. Nielsen, Louise D. Pallé, E. Prieto Arranz, J. Queloz, D. Santerne, A. Smalley, B. Turner, O. Udry, S. Verilhac, D. West, R. Wheatley, P.J. Wilson, P.A. |
| author |
Hébrard, G. |
| author_facet |
Hébrard, G. Diaz, Rodrigo Fernando Correia, A.C.M. Collier Cameron, A. Laskar, J. Pollacco, D. Almenara, J. M. Anderson, D.R. Barros, S.C.C. Boisse, I. Bonomo, A.S. Bouchy, F. Boué, G. Boumis, P. Brown, D.J.A. Dalal, S. Deleuil, M. Demangeon, O.D.S. Doyle, A.P. Haswell, C.A. Hellier, C. Osborn, H. Kiefer, F. Kolb, U.C. Lam, K. Lecavelier Des Étangs, A. Lopez, T. Martin Lagarde, M. Maxted, P. McCormac, J. Nielsen, Louise D. Pallé, E. Prieto Arranz, J. Queloz, D. Santerne, A. Smalley, B. Turner, O. Udry, S. Verilhac, D. West, R. Wheatley, P.J. Wilson, P.A. |
| author_role |
author |
| author2 |
Diaz, Rodrigo Fernando Correia, A.C.M. Collier Cameron, A. Laskar, J. Pollacco, D. Almenara, J. M. Anderson, D.R. Barros, S.C.C. Boisse, I. Bonomo, A.S. Bouchy, F. Boué, G. Boumis, P. Brown, D.J.A. Dalal, S. Deleuil, M. Demangeon, O.D.S. Doyle, A.P. Haswell, C.A. Hellier, C. Osborn, H. Kiefer, F. Kolb, U.C. Lam, K. Lecavelier Des Étangs, A. Lopez, T. Martin Lagarde, M. Maxted, P. McCormac, J. Nielsen, Louise D. Pallé, E. Prieto Arranz, J. Queloz, D. Santerne, A. Smalley, B. Turner, O. Udry, S. Verilhac, D. West, R. Wheatley, P.J. Wilson, P.A. |
| 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 |
| dc.subject.none.fl_str_mv |
PLANETARY SYSTEMS TECHNIQUES: PHOTOMETRIC TECHNIQUES: RADIAL VELOCITIES TECHNIQUES: SPECTROSCOPIC |
| topic |
PLANETARY SYSTEMS TECHNIQUES: PHOTOMETRIC TECHNIQUES: RADIAL VELOCITIES TECHNIQUES: SPECTROSCOPIC |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We present the discovery and characterization of WASP-148, a new extrasolar system that includes at least two giant planets. The host star is a slowly rotating inactive late-G dwarf with a V = 12 magnitude. The planet WASP-148b is a hot Jupiter of 0.72 RJup and 0.29 MJup that transits its host with an orbital period of 8.80 days. We found the planetary candidate with the SuperWASP photometric survey, then characterized it with the SOPHIE spectrograph. Our radial velocity measurements subsequently revealed a second planet in the system, WASP-148c, with an orbital period of 34.5 days and a minimum mass of 0.40 MJup. No transits of this outer planet were detected. The orbits of both planets are eccentric and fall near the 4:1 mean-motion resonances. This configuration is stable on long timescales, but induces dynamical interactions so that the orbits differ slightly from purely Keplerian orbits. In particular, WASP-148b shows transit-timing variations of typically 15 min, making it the first interacting system with transit-timing variations that is detected on ground-based light curves. We establish that the mutual inclination of the orbital plane of the two planets cannot be higher than 35°, and the true mass of WASP-148c is below 0.60 MJup. We present photometric and spectroscopic observations of this system that cover a time span of ten years. We also provide their Keplerian and Newtonian analyses; these analyses should be significantly improved through future TESS observations. Fil: Hébrard, G.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia. Université d’Aix-Marseille; Francia Fil: Diaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Físicas. - Universidad Nacional de San Martín. Instituto de Ciencias Físicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina Fil: Correia, A.C.M.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Universidad de Coimbra; Portugal. Sorbonne University; Francia Fil: Collier Cameron, A.. University of St. Andrews; Reino Unido Fil: Laskar, J.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia. Sorbonne University; Francia Fil: Pollacco, D.. University of Warwick; Reino Unido Fil: Almenara, J. M.. Universite Grenoble Alpes; Francia Fil: Anderson, D.R.. University of Warwick; Reino Unido. Keele University; Reino Unido Fil: Barros, S.C.C.. Universidad de Porto; Portugal Fil: Boisse, I.. Universite de Provence; Francia Fil: Bonomo, A.S.. Istituto Nazionale di Astrofisica; Italia Fil: Bouchy, F.. Universidad de Ginebra; Suiza Fil: Boué, G.. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia Fil: Boumis, P.. National Observatory Of Athens; Grecia Fil: Brown, D.J.A.. University of Warwick; Reino Unido Fil: Dalal, S.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia Fil: Deleuil, M.. Universite de Provence; Francia Fil: Demangeon, O.D.S.. Universidad de Porto; Portugal Fil: Doyle, A.P.. University of Warwick; Reino Unido Fil: Haswell, C.A.. The Open University (ou); Reino Unido Fil: Hellier, C.. Keele University; Reino Unido Fil: Osborn, H.. University of Bern; Suiza. University of Warwick; Reino Unido. Universite de Provence; Francia Fil: Kiefer, F.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia Fil: Kolb, U.C.. The Open University (ou); Reino Unido Fil: Lam, K.. Technishe Universitat Berlin; Alemania. University of Warwick; Reino Unido Fil: Lecavelier Des Étangs, A.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia Fil: Lopez, T.. Universite de Provence; Francia Fil: Martin Lagarde, M.. Université Pierre et Marie Curie; Francia. Centre National de la Recherche Scientifique; Francia Fil: Maxted, P.. Keele University; Reino Unido Fil: McCormac, J.. University of Warwick; Reino Unido Fil: Nielsen, Louise D.. Universidad de Ginebra; Suiza Fil: Pallé, E.. Instituto de Astrofísica de Canarias; España. Universidad de La Laguna; España Fil: Prieto Arranz, J.. Universidad de La Laguna; España. Instituto de Astrofísica de Canarias; España Fil: Queloz, D.. Universidad de Ginebra; Suiza. Cavendish Laboratory; Reino Unido Fil: Santerne, A.. Universite de Provence; Francia Fil: Smalley, B.. Keele University; Reino Unido Fil: Turner, O.. Universidad de Ginebra; Suiza Fil: Udry, S.. Universidad de Ginebra; Suiza Fil: Verilhac, D.. Observatoire Hubert-reeves; Francia Fil: West, R.. University of Warwick; Reino Unido Fil: Wheatley, P.J.. University of Warwick; Reino Unido Fil: Wilson, P.A.. University of Warwick; Reino Unido |
| description |
We present the discovery and characterization of WASP-148, a new extrasolar system that includes at least two giant planets. The host star is a slowly rotating inactive late-G dwarf with a V = 12 magnitude. The planet WASP-148b is a hot Jupiter of 0.72 RJup and 0.29 MJup that transits its host with an orbital period of 8.80 days. We found the planetary candidate with the SuperWASP photometric survey, then characterized it with the SOPHIE spectrograph. Our radial velocity measurements subsequently revealed a second planet in the system, WASP-148c, with an orbital period of 34.5 days and a minimum mass of 0.40 MJup. No transits of this outer planet were detected. The orbits of both planets are eccentric and fall near the 4:1 mean-motion resonances. This configuration is stable on long timescales, but induces dynamical interactions so that the orbits differ slightly from purely Keplerian orbits. In particular, WASP-148b shows transit-timing variations of typically 15 min, making it the first interacting system with transit-timing variations that is detected on ground-based light curves. We establish that the mutual inclination of the orbital plane of the two planets cannot be higher than 35°, and the true mass of WASP-148c is below 0.60 MJup. We present photometric and spectroscopic observations of this system that cover a time span of ten years. We also provide their Keplerian and Newtonian analyses; these analyses should be significantly improved through future TESS observations. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020-08 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/173419 Hébrard, G.; Diaz, Rodrigo Fernando; Correia, A.C.M.; Collier Cameron, A.; Laskar, J.; et al.; Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets; EDP Sciences; Astronomy and Astrophysics; 640; A32; 8-2020; 1-16 0004-6361 1432-0746 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/173419 |
| identifier_str_mv |
Hébrard, G.; Diaz, Rodrigo Fernando; Correia, A.C.M.; Collier Cameron, A.; Laskar, J.; et al.; Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets; EDP Sciences; Astronomy and Astrophysics; 640; A32; 8-2020; 1-16 0004-6361 1432-0746 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202038296 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2020/08/aa38296-20/aa38296-20.html |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
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openAccess |
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application/pdf application/pdf application/pdf |
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EDP Sciences |
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EDP Sciences |
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CONICET Digital (CONICET) |
| instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
| _version_ |
1846781392314171392 |
| score |
12.8982525 |