Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates

Autores
Cabrera, J.; Barros, S.C.C.; Armstrong, D.; Hidalgo, D.; Santos, N.C.; Almenara, J.M.; Alonso, R.; Deleuil, M.; Demangeon, O.; Diaz, Rodrigo Fernando; Lendl, M.; Pfaff, J.; Rauer, H.; Santerne, A.; Serrano, L.M.; Zucker, S.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. Transiting super-Earths orbiting bright stars in short orbital periods are interesting targets for the study of planetary atmospheres. Aims. While selecting super-Earths suitable for further characterisation from the ground from a list of confirmed and validated exoplanets detected by K2, we found some suspicious cases that led to us reassess the nature of the detected transiting signal. Methods. We performed a photometric analysis of the K2 light curves and centroid motions of the photometric barycenters. Results. Our study shows that the validated planets K2-78b, K2-82b, and K2-92b are not planets, but background eclipsing binaries. The eclipsing binaries are inside the Kepler photometric aperture, but outside the ground-based high-resolution images that were used for validation. Conclusions. We advise extreme care in the validation of candidate planets that are discovered by space missions. It is important that all the assumptions in the validation process are carefully checked. An independent confirmation is mandatory in order to avoid wasting valuable resources on further characterisation of non-existent targets.
Fil: Cabrera, J.. Deutsches Zentrum Fur Luft- Und Raumfahrt; Alemania
Fil: Barros, S.C.C.. Universidade Do Porto, Centro de Astrofisica; Portugal
Fil: Armstrong, D.. University of Warwick; Reino Unido
Fil: Hidalgo, D.. Instituto Astrofisico de Canarias; España. Universidad de La Laguna; España
Fil: Santos, N.C.. Universidade Do Porto, Centro de Astrofisica; Portugal. Universidad de Porto; Portugal
Fil: Almenara, J.M.. Universidad de Ginebra; Suiza. Universite Grenoble Alpes; Suiza
Fil: Alonso, R.. Instituto Astrofisico de Canarias; España. Universidad de La Laguna; España
Fil: Deleuil, M.. Laboratoire D'astrophysique de Marseille;
Fil: Demangeon, O.. Universidade Do Porto, Centro de Astrofisica; Portugal
Fil: Diaz, Rodrigo Fernando. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad de Ginebra; Suiza
Fil: Lendl, M.. Institut Fur Weltraumforschung; Austria
Fil: Pfaff, J.. Technishe Universitat Berlin; Alemania
Fil: Rauer, H.. Technishe Universitat Berlin; Alemania. Deutsches Zentrum Fur Luft- Und Raumfahrt; Alemania
Fil: Santerne, A.. Laboratoire D'astrophysique de Marseille; Francia
Fil: Serrano, L.M.. Universidade Do Porto, Centro de Astrofisica; Portugal. Universidad de Porto; Portugal
Fil: Zucker, S.. Tel Aviv University; Israel
Materia
ECLIPSES
METHODS: DATA ANALYSIS
PLANETS AND SATELLITES: DETECTION
TECHNIQUES: PHOTOMETRIC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/51859
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/51859
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidatesCabrera, J.Barros, S.C.C.Armstrong, D.Hidalgo, D.Santos, N.C.Almenara, J.M.Alonso, R.Deleuil, M.Demangeon, O.Diaz, Rodrigo FernandoLendl, M.Pfaff, J.Rauer, H.Santerne, A.Serrano, L.M.Zucker, S.ECLIPSESMETHODS: DATA ANALYSISPLANETS AND SATELLITES: DETECTIONTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. Transiting super-Earths orbiting bright stars in short orbital periods are interesting targets for the study of planetary atmospheres. Aims. While selecting super-Earths suitable for further characterisation from the ground from a list of confirmed and validated exoplanets detected by K2, we found some suspicious cases that led to us reassess the nature of the detected transiting signal. Methods. We performed a photometric analysis of the K2 light curves and centroid motions of the photometric barycenters. Results. Our study shows that the validated planets K2-78b, K2-82b, and K2-92b are not planets, but background eclipsing binaries. The eclipsing binaries are inside the Kepler photometric aperture, but outside the ground-based high-resolution images that were used for validation. Conclusions. We advise extreme care in the validation of candidate planets that are discovered by space missions. It is important that all the assumptions in the validation process are carefully checked. An independent confirmation is mandatory in order to avoid wasting valuable resources on further characterisation of non-existent targets.Fil: Cabrera, J.. Deutsches Zentrum Fur Luft- Und Raumfahrt; AlemaniaFil: Barros, S.C.C.. Universidade Do Porto, Centro de Astrofisica; PortugalFil: Armstrong, D.. University of Warwick; Reino UnidoFil: Hidalgo, D.. Instituto Astrofisico de Canarias; España. Universidad de La Laguna; EspañaFil: Santos, N.C.. Universidade Do Porto, Centro de Astrofisica; Portugal. Universidad de Porto; PortugalFil: Almenara, J.M.. Universidad de Ginebra; Suiza. Universite Grenoble Alpes; SuizaFil: Alonso, R.. Instituto Astrofisico de Canarias; España. Universidad de La Laguna; EspañaFil: Deleuil, M.. Laboratoire D'astrophysique de Marseille;Fil: Demangeon, O.. Universidade Do Porto, Centro de Astrofisica; PortugalFil: Diaz, Rodrigo Fernando. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad de Ginebra; SuizaFil: Lendl, M.. Institut Fur Weltraumforschung; AustriaFil: Pfaff, J.. Technishe Universitat Berlin; AlemaniaFil: Rauer, H.. Technishe Universitat Berlin; Alemania. Deutsches Zentrum Fur Luft- Und Raumfahrt; AlemaniaFil: Santerne, A.. Laboratoire D'astrophysique de Marseille; FranciaFil: Serrano, L.M.. Universidade Do Porto, Centro de Astrofisica; Portugal. Universidad de Porto; PortugalFil: Zucker, S.. Tel Aviv University; IsraelEDP Sciences2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/51859Cabrera, J.; Barros, S.C.C.; Armstrong, D.; Hidalgo, D.; Santos, N.C.; et al.; Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates; EDP Sciences; Astronomy and Astrophysics; 606; A75; 10-2017; 1-40004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/10.1051/0004-6361/201731233info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731233info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:03:45Zoai:ri.conicet.gov.ar:11336/51859instacron: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 12:03:45.355CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
title Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
spellingShingle Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
Cabrera, J.
ECLIPSES
METHODS: DATA ANALYSIS
PLANETS AND SATELLITES: DETECTION
TECHNIQUES: PHOTOMETRIC
title_short Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
title_full Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
title_fullStr Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
title_full_unstemmed Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
title_sort Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates
dc.creator.none.fl_str_mv Cabrera, J.
Barros, S.C.C.
Armstrong, D.
Hidalgo, D.
Santos, N.C.
Almenara, J.M.
Alonso, R.
Deleuil, M.
Demangeon, O.
Diaz, Rodrigo Fernando
Lendl, M.
Pfaff, J.
Rauer, H.
Santerne, A.
Serrano, L.M.
Zucker, S.
author Cabrera, J.
author_facet Cabrera, J.
Barros, S.C.C.
Armstrong, D.
Hidalgo, D.
Santos, N.C.
Almenara, J.M.
Alonso, R.
Deleuil, M.
Demangeon, O.
Diaz, Rodrigo Fernando
Lendl, M.
Pfaff, J.
Rauer, H.
Santerne, A.
Serrano, L.M.
Zucker, S.
author_role author
author2 Barros, S.C.C.
Armstrong, D.
Hidalgo, D.
Santos, N.C.
Almenara, J.M.
Alonso, R.
Deleuil, M.
Demangeon, O.
Diaz, Rodrigo Fernando
Lendl, M.
Pfaff, J.
Rauer, H.
Santerne, A.
Serrano, L.M.
Zucker, S.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ECLIPSES
METHODS: DATA ANALYSIS
PLANETS AND SATELLITES: DETECTION
TECHNIQUES: PHOTOMETRIC
topic ECLIPSES
METHODS: DATA ANALYSIS
PLANETS AND SATELLITES: DETECTION
TECHNIQUES: PHOTOMETRIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context. Transiting super-Earths orbiting bright stars in short orbital periods are interesting targets for the study of planetary atmospheres. Aims. While selecting super-Earths suitable for further characterisation from the ground from a list of confirmed and validated exoplanets detected by K2, we found some suspicious cases that led to us reassess the nature of the detected transiting signal. Methods. We performed a photometric analysis of the K2 light curves and centroid motions of the photometric barycenters. Results. Our study shows that the validated planets K2-78b, K2-82b, and K2-92b are not planets, but background eclipsing binaries. The eclipsing binaries are inside the Kepler photometric aperture, but outside the ground-based high-resolution images that were used for validation. Conclusions. We advise extreme care in the validation of candidate planets that are discovered by space missions. It is important that all the assumptions in the validation process are carefully checked. An independent confirmation is mandatory in order to avoid wasting valuable resources on further characterisation of non-existent targets.
Fil: Cabrera, J.. Deutsches Zentrum Fur Luft- Und Raumfahrt; Alemania
Fil: Barros, S.C.C.. Universidade Do Porto, Centro de Astrofisica; Portugal
Fil: Armstrong, D.. University of Warwick; Reino Unido
Fil: Hidalgo, D.. Instituto Astrofisico de Canarias; España. Universidad de La Laguna; España
Fil: Santos, N.C.. Universidade Do Porto, Centro de Astrofisica; Portugal. Universidad de Porto; Portugal
Fil: Almenara, J.M.. Universidad de Ginebra; Suiza. Universite Grenoble Alpes; Suiza
Fil: Alonso, R.. Instituto Astrofisico de Canarias; España. Universidad de La Laguna; España
Fil: Deleuil, M.. Laboratoire D'astrophysique de Marseille;
Fil: Demangeon, O.. Universidade Do Porto, Centro de Astrofisica; Portugal
Fil: Diaz, Rodrigo Fernando. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad de Ginebra; Suiza
Fil: Lendl, M.. Institut Fur Weltraumforschung; Austria
Fil: Pfaff, J.. Technishe Universitat Berlin; Alemania
Fil: Rauer, H.. Technishe Universitat Berlin; Alemania. Deutsches Zentrum Fur Luft- Und Raumfahrt; Alemania
Fil: Santerne, A.. Laboratoire D'astrophysique de Marseille; Francia
Fil: Serrano, L.M.. Universidade Do Porto, Centro de Astrofisica; Portugal. Universidad de Porto; Portugal
Fil: Zucker, S.. Tel Aviv University; Israel
description Context. Transiting super-Earths orbiting bright stars in short orbital periods are interesting targets for the study of planetary atmospheres. Aims. While selecting super-Earths suitable for further characterisation from the ground from a list of confirmed and validated exoplanets detected by K2, we found some suspicious cases that led to us reassess the nature of the detected transiting signal. Methods. We performed a photometric analysis of the K2 light curves and centroid motions of the photometric barycenters. Results. Our study shows that the validated planets K2-78b, K2-82b, and K2-92b are not planets, but background eclipsing binaries. The eclipsing binaries are inside the Kepler photometric aperture, but outside the ground-based high-resolution images that were used for validation. Conclusions. We advise extreme care in the validation of candidate planets that are discovered by space missions. It is important that all the assumptions in the validation process are carefully checked. An independent confirmation is mandatory in order to avoid wasting valuable resources on further characterisation of non-existent targets.
publishDate 2017
dc.date.none.fl_str_mv 2017-10
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/51859
Cabrera, J.; Barros, S.C.C.; Armstrong, D.; Hidalgo, D.; Santos, N.C.; et al.; Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates; EDP Sciences; Astronomy and Astrophysics; 606; A75; 10-2017; 1-4
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/51859
identifier_str_mv Cabrera, J.; Barros, S.C.C.; Armstrong, D.; Hidalgo, D.; Santos, N.C.; et al.; Disproving the validated planets K2-78b, K2-82b, and K2-92b: The importance of independently confirming planetary candidates; EDP Sciences; Astronomy and Astrophysics; 606; A75; 10-2017; 1-4
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.aanda.org/10.1051/0004-6361/201731233
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731233
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection 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
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score 12.982451

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