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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/24573

id CONICETDig_e790f3c8cd3b731101eec6b02cb8c3bd
oai_identifier_str oai:ri.conicet.gov.ar:11336/24573
network_acronym_str CONICETDig
repository_id_str 3498
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 Técnicas2025-09-29T10:40:25Zoai: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:34982025-09-29 10:40:26.184CONICET 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
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
_version_ 1844614432227852288
score 13.070432