K2-110 b: A massive mini-Neptune exoplanet

Autores: Osborn, H. P.; Santerne, A.; Barros, S. C. C.; Santos, N. C.; Dumusque, X.; Malavolta, L.; Armstrong, D. J.; Hojjatpanah, S.; Demangeon, O.; Adibekyan, V.; Almenara, J. M.; Barrado, D.; Bayliss, D.; Boisse, I.; Bouchy, F.; Brown, D. J. A.; Cameron, A. C.; Charbonneau, D.; Deleuil, M.; Delgado Mena, E.; Diaz, Rodrigo Fernando; Hébrard, G.; Kirk, J.; King, G. W.; Lam, K. W. F.; Latham, D.; Lillo Box, J.; Louden, T. M.; Lovis, C.; Marmier, M.; McCormac, J.; Molinari, E.; Pepe, F.; Pollacco, D.; Sousa, S. G.; Udry, S.; Walker, S. R.
Año de publicación: 2017
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: We report the discovery of the exoplanet K2-110 b (previously EPIC212521166b) from K2 photometry orbiting in a 13.8637d period around an old, metal-poor K3 dwarf star. With a V-band magnitude of 11.9, K2-110 is particularly amenable to RV follow-up. A joint analysis of K2 photometry and high-precision RVs from 28 HARPS and HARPS-N spectra reveal it to have a radius of 2.6 ± 0.1R⊕ and a mass of 16.7 ± 3.2M⊕, hence a density of 5.2 ± 1.2 g cm-3, making it one of the most massive planets yet to be found with a sub-Neptune radius. When accounting for compression, the resulting Earth-like density is best fitted by a 0.2M⊕ hydrogen atmosphere over an 16.5M⊕ Earth-like interior, although the planet could also have significant water content. At 0.1 AU, even taking into account the old stellar age of 8 ± 3 Gyr, the planet is unlikely to have been significantly affected by EUV evaporation. However the planet likelydisc-migrated to its current position making the lack of a thick H2 atmosphere puzzling. This analysis has made K2-110 b one of the best-characterised mini-Neptunes with density constrained to less than 30%.
Fil: Osborn, H. P.. University Of Warwick; Reino Unido
Fil: Santerne, A.. Universidad de Porto; Portugal
Fil: Barros, S. C. C.. Universidad de Porto; Portugal
Fil: Santos, N. C.. Universidad de Porto; Portugal
Fil: Dumusque, X.. Universidad de Ginebra; Suiza
Fil: Malavolta, L.. Università di Padova; Italia
Fil: Armstrong, D. J.. The Queens University Of Belfast; Irlanda. University Of Warwick; Reino Unido
Fil: Hojjatpanah, S.. Universidad de Porto; Portugal
Fil: Demangeon, O.. Laboratoire D; Francia
Fil: Adibekyan, V.. Universidad de Porto; Portugal
Fil: Almenara, J. M.. Centre National de la Recherche Scientifique; Francia
Fil: Barrado, D.. Centre National de la Recherche Scientifique; Francia
Fil: Bayliss, D.. Universidad de Ginebra; Suiza
Fil: Boisse, I.. Laboratoire D; Francia
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Brown, D. J. A.. University Of Warwick; Reino Unido
Fil: Cameron, A. C.. University of St. Andrews; Reino Unido
Fil: Charbonneau, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Deleuil, M.. Laboratoire D; Francia
Fil: Delgado Mena, E.. Universidad de Porto; 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: Hébrard, G.. Universite Pierre et Marie Curie; Francia
Fil: Kirk, J.. University Of Warwick; Reino Unido
Fil: King, G. W.. University Of Warwick; Reino Unido
Fil: Lam, K. W. F.. University Of Warwick; Reino Unido
Fil: Latham, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Lillo Box, J.. European Southern Observatory; Chile
Fil: Louden, T. M.. University Of Warwick; Reino Unido
Fil: Lovis, C.. Universidad de Ginebra; Suiza
Fil: Marmier, M.. Universidad de Ginebra; Suiza
Fil: McCormac, J.. University Of Warwick; Reino Unido
Fil: Molinari, E.. Istituto Di Astrofisica Spaziale E Fisica Cosmica; Italia
Fil: Pepe, F.. Universidad de Ginebra; Suiza
Fil: Pollacco, D.. University Of Warwick; Reino Unido
Fil: Sousa, S. G.. Universidad de Porto; Portugal
Fil: Udry, S.. Universidad de Ginebra; Suiza
Fil: Walker, S. R.. University Of Warwick; Reino Unido
Materia: PLANETS AND SATELLITES: DETECTION
Nivel de accesibilidad: acceso abierto
Condiciones de uso: https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
Institución: Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador: oai:ri.conicet.gov.ar:11336/24573

Acceder

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network_name_str	CONICET Digital (CONICET)
spelling	K2-110 b: A massive mini-Neptune exoplanetOsborn, H. P.Santerne, A.Barros, S. C. C.Santos, N. C.Dumusque, X.Malavolta, L.Armstrong, D. J.Hojjatpanah, S.Demangeon, O.Adibekyan, V.Almenara, J. M.Barrado, D.Bayliss, D.Boisse, I.Bouchy, F.Brown, D. J. A.Cameron, A. C.Charbonneau, D.Deleuil, M.Delgado Mena, E.Diaz, Rodrigo FernandoHébrard, G.Kirk, J.King, G. W.Lam, K. W. F.Latham, D.Lillo Box, J.Louden, T. M.Lovis, C.Marmier, M.McCormac, J.Molinari, E.Pepe, F.Pollacco, D.Sousa, S. G.Udry, S.Walker, S. R.PLANETS AND SATELLITES: DETECTIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report the discovery of the exoplanet K2-110 b (previously EPIC212521166b) from K2 photometry orbiting in a 13.8637d period around an old, metal-poor K3 dwarf star. With a V-band magnitude of 11.9, K2-110 is particularly amenable to RV follow-up. A joint analysis of K2 photometry and high-precision RVs from 28 HARPS and HARPS-N spectra reveal it to have a radius of 2.6 ± 0.1R⊕ and a mass of 16.7 ± 3.2M⊕, hence a density of 5.2 ± 1.2 g cm-3, making it one of the most massive planets yet to be found with a sub-Neptune radius. When accounting for compression, the resulting Earth-like density is best fitted by a 0.2M⊕ hydrogen atmosphere over an 16.5M⊕ Earth-like interior, although the planet could also have significant water content. At 0.1 AU, even taking into account the old stellar age of 8 ± 3 Gyr, the planet is unlikely to have been significantly affected by EUV evaporation. However the planet likelydisc-migrated to its current position making the lack of a thick H2 atmosphere puzzling. This analysis has made K2-110 b one of the best-characterised mini-Neptunes with density constrained to less than 30%.Fil: Osborn, H. P.. University Of Warwick; Reino UnidoFil: Santerne, A.. Universidad de Porto; PortugalFil: Barros, S. C. C.. Universidad de Porto; PortugalFil: Santos, N. C.. Universidad de Porto; PortugalFil: Dumusque, X.. Universidad de Ginebra; SuizaFil: Malavolta, L.. Università di Padova; ItaliaFil: Armstrong, D. J.. The Queens University Of Belfast; Irlanda. University Of Warwick; Reino UnidoFil: Hojjatpanah, S.. Universidad de Porto; PortugalFil: Demangeon, O.. Laboratoire D; FranciaFil: Adibekyan, V.. Universidad de Porto; PortugalFil: Almenara, J. M.. Centre National de la Recherche Scientifique; FranciaFil: Barrado, D.. Centre National de la Recherche Scientifique; FranciaFil: Bayliss, D.. Universidad de Ginebra; SuizaFil: Boisse, I.. Laboratoire D; FranciaFil: Bouchy, F.. Universidad de Ginebra; SuizaFil: Brown, D. J. A.. University Of Warwick; Reino UnidoFil: Cameron, A. C.. University of St. Andrews; Reino UnidoFil: Charbonneau, D.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Deleuil, M.. Laboratoire D; FranciaFil: Delgado Mena, E.. Universidad de Porto; 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: Hébrard, G.. Universite Pierre et Marie Curie; FranciaFil: Kirk, J.. University Of Warwick; Reino UnidoFil: King, G. W.. University Of Warwick; Reino UnidoFil: Lam, K. W. F.. University Of Warwick; Reino UnidoFil: Latham, D.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Lillo Box, J.. European Southern Observatory; ChileFil: Louden, T. M.. University Of Warwick; Reino UnidoFil: Lovis, C.. Universidad de Ginebra; SuizaFil: Marmier, M.. Universidad de Ginebra; SuizaFil: McCormac, J.. University Of Warwick; Reino UnidoFil: Molinari, E.. Istituto Di Astrofisica Spaziale E Fisica Cosmica; ItaliaFil: Pepe, F.. Universidad de Ginebra; SuizaFil: Pollacco, D.. University Of Warwick; Reino UnidoFil: Sousa, S. G.. Universidad de Porto; PortugalFil: Udry, S.. Universidad de Ginebra; SuizaFil: Walker, S. R.. University Of Warwick; Reino UnidoEDP Sciences2017-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24573Osborn, H. P.; Santerne, A.; Barros, S. C. C.; Santos, N. C.; Dumusque, X.; et al.; K2-110 b: A massive mini-Neptune exoplanet; EDP Sciences; Astronomy and Astrophysics; 604; A19; 8-2017; 1-80004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201628932info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2017/08/aa28932-16/aa28932-16.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:38:12Zoai:ri.conicet.gov.ar:11336/24573instacron: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:34982025-10-15 15:38:12.97CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	K2-110 b: A massive mini-Neptune exoplanet
title	K2-110 b: A massive mini-Neptune exoplanet
spellingShingle	K2-110 b: A massive mini-Neptune exoplanet Osborn, H. P. PLANETS AND SATELLITES: DETECTION
title_short	K2-110 b: A massive mini-Neptune exoplanet
title_full	K2-110 b: A massive mini-Neptune exoplanet
title_fullStr	K2-110 b: A massive mini-Neptune exoplanet
title_full_unstemmed	K2-110 b: A massive mini-Neptune exoplanet
title_sort	K2-110 b: A massive mini-Neptune exoplanet
dc.creator.none.fl_str_mv	Osborn, H. P. Santerne, A. Barros, S. C. C. Santos, N. C. Dumusque, X. Malavolta, L. Armstrong, D. J. Hojjatpanah, S. Demangeon, O. Adibekyan, V. Almenara, J. M. Barrado, D. Bayliss, D. Boisse, I. Bouchy, F. Brown, D. J. A. Cameron, A. C. Charbonneau, D. Deleuil, M. Delgado Mena, E. Diaz, Rodrigo Fernando Hébrard, G. Kirk, J. King, G. W. Lam, K. W. F. Latham, D. Lillo Box, J. Louden, T. M. Lovis, C. Marmier, M. McCormac, J. Molinari, E. Pepe, F. Pollacco, D. Sousa, S. G. Udry, S. Walker, S. R.
author	Osborn, H. P.
author_facet	Osborn, H. P. Santerne, A. Barros, S. C. C. Santos, N. C. Dumusque, X. Malavolta, L. Armstrong, D. J. Hojjatpanah, S. Demangeon, O. Adibekyan, V. Almenara, J. M. Barrado, D. Bayliss, D. Boisse, I. Bouchy, F. Brown, D. J. A. Cameron, A. C. Charbonneau, D. Deleuil, M. Delgado Mena, E. Diaz, Rodrigo Fernando Hébrard, G. Kirk, J. King, G. W. Lam, K. W. F. Latham, D. Lillo Box, J. Louden, T. M. Lovis, C. Marmier, M. McCormac, J. Molinari, E. Pepe, F. Pollacco, D. Sousa, S. G. Udry, S. Walker, S. R.
author_role	author
author2	Santerne, A. Barros, S. C. C. Santos, N. C. Dumusque, X. Malavolta, L. Armstrong, D. J. Hojjatpanah, S. Demangeon, O. Adibekyan, V. Almenara, J. M. Barrado, D. Bayliss, D. Boisse, I. Bouchy, F. Brown, D. J. A. Cameron, A. C. Charbonneau, D. Deleuil, M. Delgado Mena, E. Diaz, Rodrigo Fernando Hébrard, G. Kirk, J. King, G. W. Lam, K. W. F. Latham, D. Lillo Box, J. Louden, T. M. Lovis, C. Marmier, M. McCormac, J. Molinari, E. Pepe, F. Pollacco, D. Sousa, S. G. Udry, S. Walker, S. R.
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
dc.subject.none.fl_str_mv	PLANETS AND SATELLITES: DETECTION
topic	PLANETS AND SATELLITES: DETECTION
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 report the discovery of the exoplanet K2-110 b (previously EPIC212521166b) from K2 photometry orbiting in a 13.8637d period around an old, metal-poor K3 dwarf star. With a V-band magnitude of 11.9, K2-110 is particularly amenable to RV follow-up. A joint analysis of K2 photometry and high-precision RVs from 28 HARPS and HARPS-N spectra reveal it to have a radius of 2.6 ± 0.1R⊕ and a mass of 16.7 ± 3.2M⊕, hence a density of 5.2 ± 1.2 g cm-3, making it one of the most massive planets yet to be found with a sub-Neptune radius. When accounting for compression, the resulting Earth-like density is best fitted by a 0.2M⊕ hydrogen atmosphere over an 16.5M⊕ Earth-like interior, although the planet could also have significant water content. At 0.1 AU, even taking into account the old stellar age of 8 ± 3 Gyr, the planet is unlikely to have been significantly affected by EUV evaporation. However the planet likelydisc-migrated to its current position making the lack of a thick H2 atmosphere puzzling. This analysis has made K2-110 b one of the best-characterised mini-Neptunes with density constrained to less than 30%. Fil: Osborn, H. P.. University Of Warwick; Reino Unido Fil: Santerne, A.. Universidad de Porto; Portugal Fil: Barros, S. C. C.. Universidad de Porto; Portugal Fil: Santos, N. C.. Universidad de Porto; Portugal Fil: Dumusque, X.. Universidad de Ginebra; Suiza Fil: Malavolta, L.. Università di Padova; Italia Fil: Armstrong, D. J.. The Queens University Of Belfast; Irlanda. University Of Warwick; Reino Unido Fil: Hojjatpanah, S.. Universidad de Porto; Portugal Fil: Demangeon, O.. Laboratoire D; Francia Fil: Adibekyan, V.. Universidad de Porto; Portugal Fil: Almenara, J. M.. Centre National de la Recherche Scientifique; Francia Fil: Barrado, D.. Centre National de la Recherche Scientifique; Francia Fil: Bayliss, D.. Universidad de Ginebra; Suiza Fil: Boisse, I.. Laboratoire D; Francia Fil: Bouchy, F.. Universidad de Ginebra; Suiza Fil: Brown, D. J. A.. University Of Warwick; Reino Unido Fil: Cameron, A. C.. University of St. Andrews; Reino Unido Fil: Charbonneau, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Deleuil, M.. Laboratoire D; Francia Fil: Delgado Mena, E.. Universidad de Porto; 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: Hébrard, G.. Universite Pierre et Marie Curie; Francia Fil: Kirk, J.. University Of Warwick; Reino Unido Fil: King, G. W.. University Of Warwick; Reino Unido Fil: Lam, K. W. F.. University Of Warwick; Reino Unido Fil: Latham, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Lillo Box, J.. European Southern Observatory; Chile Fil: Louden, T. M.. University Of Warwick; Reino Unido Fil: Lovis, C.. Universidad de Ginebra; Suiza Fil: Marmier, M.. Universidad de Ginebra; Suiza Fil: McCormac, J.. University Of Warwick; Reino Unido Fil: Molinari, E.. Istituto Di Astrofisica Spaziale E Fisica Cosmica; Italia Fil: Pepe, F.. Universidad de Ginebra; Suiza Fil: Pollacco, D.. University Of Warwick; Reino Unido Fil: Sousa, S. G.. Universidad de Porto; Portugal Fil: Udry, S.. Universidad de Ginebra; Suiza Fil: Walker, S. R.. University Of Warwick; Reino Unido
description	We report the discovery of the exoplanet K2-110 b (previously EPIC212521166b) from K2 photometry orbiting in a 13.8637d period around an old, metal-poor K3 dwarf star. With a V-band magnitude of 11.9, K2-110 is particularly amenable to RV follow-up. A joint analysis of K2 photometry and high-precision RVs from 28 HARPS and HARPS-N spectra reveal it to have a radius of 2.6 ± 0.1R⊕ and a mass of 16.7 ± 3.2M⊕, hence a density of 5.2 ± 1.2 g cm-3, making it one of the most massive planets yet to be found with a sub-Neptune radius. When accounting for compression, the resulting Earth-like density is best fitted by a 0.2M⊕ hydrogen atmosphere over an 16.5M⊕ Earth-like interior, although the planet could also have significant water content. At 0.1 AU, even taking into account the old stellar age of 8 ± 3 Gyr, the planet is unlikely to have been significantly affected by EUV evaporation. However the planet likelydisc-migrated to its current position making the lack of a thick H2 atmosphere puzzling. This analysis has made K2-110 b one of the best-characterised mini-Neptunes with density constrained to less than 30%.
publishDate	2017
dc.date.none.fl_str_mv	2017-08
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
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	http://hdl.handle.net/11336/24573 Osborn, H. P.; Santerne, A.; Barros, S. C. C.; Santos, N. C.; Dumusque, X.; et al.; K2-110 b: A massive mini-Neptune exoplanet; EDP Sciences; Astronomy and Astrophysics; 604; A19; 8-2017; 1-8 0004-6361 CONICET Digital CONICET
url	http://hdl.handle.net/11336/24573
identifier_str_mv	Osborn, H. P.; Santerne, A.; Barros, S. C. C.; Santos, N. C.; Dumusque, X.; et al.; K2-110 b: A massive mini-Neptune exoplanet; EDP Sciences; Astronomy and Astrophysics; 604; A19; 8-2017; 1-8 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/doi/10.1051/0004-6361/201628932 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2017/08/aa28932-16/aa28932-16.html
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
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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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K2-110 b: A massive mini-Neptune exoplanet

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