EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT

Autores: Bayliss, D.; Hojjatpanah, S.; Santerne, A.; Dragomir, D.; Zhou, G.; Shporer, A.; Colón, K. D.; Almenara, J.; Armstrong, D. J.; Barrado, D.; Barros, S.C.C.; Bento, J.; Boisse, I.; Bouchy, F.; Brown, D. J. A.; Brown, T.; Cameron, A.; Cochran, W. D.; Demangeon, O.; Deleuil, M.; Diaz, Rodrigo Fernando; Fulton, B.; Horne, K.; Hébrard, G.; Lillo-Box, J.; Lovis, C.; Mawet, D.; Ngo, H.; Osborn, H.; Palle, E.; Petigura, E.; Pollacco, D.; Santos, N.; Sefako, R.; Siverd, R.; Sousa, S.G.; Tsantaki, M.
Año de publicación: 2017
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: We report the discovery of EPIC 201702477b, a transiting brown dwarf in a long period (40.73691 ±0.00037 day) and eccentric (e = 0.2281 ±0.0026) orbit. This system was initially reported as a planetary candidate based on two transit events seen in K2 Campaign 1 photometry and later validated as an exoplanet candidate. We confirm the transit and refine the ephemeris with two subsequent ground-based detections of the transit using the Las Cumbres Observatory Global Telescope 1 m telescope network. We rule out any transit timing variations above the level of ∼30 s. Using high precision radial velocity measurements from HARPS and SOPHIE we identify the transiting companion as a brown dwarf with a mass, radius, and bulk density of 66.9 ±1.7 M J, 0.757 ±0.065 R J, and 191 ±51 g cm-3 respectively. EPIC 201702477b is the smallest radius brown dwarf yet discovered, with a mass just below the H-burning limit. It has the highest density of any planet, substellar mass object, or main-sequence star discovered so far. We find evidence in the set of known transiting brown dwarfs for two populations of objects - high mass brown dwarfs and low mass brown dwarfs. The higher-mass population have radii in very close agreement to theoretical models, and show a lower-mass limit around 60 M J. This may be the signature of mass-dependent ejection of systems during the formation process.
Fil: Bayliss, D.. Universidad de Ginebra; Suiza
Fil: Hojjatpanah, S.. Universidad de Porto; Portugal
Fil: Santerne, A.. Universidad de Porto; Portugal
Fil: Dragomir, D.. University of Chicago; Estados Unidos. Massachusetts Institute of Technology; Estados Unidos
Fil: Zhou, G.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Shporer, A.. California Institute Of Technology; Estados Unidos
Fil: Colón, K. D.. National Aeronautics and Space Administration; Estados Unidos
Fil: Almenara, J.. Universite Joseph Fourier. Observatoire de Grenoble; Francia
Fil: Armstrong, D. J.. University Of Warwick; Reino Unido. The Queens University Of Belfast; Irlanda
Fil: Barrado, D.. Centro de Astrobiologia; España
Fil: Barros, S.C.C.. Universidad de Porto; Portugal
Fil: Bento, J.. Australian National University; Australia
Fil: Boisse, I.. Laboratoire D; Francia
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Brown, D. J. A.. University Of Warwick; Reino Unido
Fil: Brown, T.. State University Of Colorado Boulder; Estados Unidos
Fil: Cameron, A.. University of St. Andrews; Reino Unido
Fil: Cochran, W. D.. University of Texas at Austin; Estados Unidos
Fil: Demangeon, O.. Laboratoire D; Francia
Fil: Deleuil, M.. Laboratoire D; Francia
Fil: Diaz, Rodrigo Fernando. Universidad de Ginebra; Suiza. 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
Fil: Fulton, B.. University Of Hawaii At Manoa; Estados Unidos
Fil: Horne, K.. University of St. Andrews; Reino Unido
Fil: Hébrard, G.. Universite Pierre et Marie Curie; Francia
Fil: Lillo-Box, J.. European Southern Observatory; Chile
Fil: Lovis, C.. Universidad de Ginebra; Suiza
Fil: Mawet, D.. California Institute Of Technology; Estados Unidos
Fil: Ngo, H.. California Institute Of Technology; Estados Unidos
Fil: Osborn, H.. University Of Warwick; Reino Unido
Fil: Palle, E.. Instituto Astrofisico de Canarias; España
Fil: Petigura, E.. California Institute Of Technology; Estados Unidos
Fil: Pollacco, D.. University Of Warwick; Reino Unido
Fil: Santos, N.. Universidad de Porto; Portugal
Fil: Sefako, R.. South African Astronomical Observatory; Sudáfrica
Fil: Siverd, R.. Las Cumbres Observatory Global Telescope Network, Inc; Estados Unidos
Fil: Sousa, S.G.. Universidad de Porto; Portugal
Fil: Tsantaki, M.. Universidad Nacional Autónoma de México; México
Materia: Planetary Systems
Techniques: Photometric
Techniques: Spectroscopic
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:11336/23614

Acceder

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repository_id_str	3498
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spelling	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBITBayliss, D.Hojjatpanah, S.Santerne, A.Dragomir, D.Zhou, G.Shporer, A.Colón, K. D.Almenara, J.Armstrong, D. J.Barrado, D.Barros, S.C.C.Bento, J.Boisse, I.Bouchy, F.Brown, D. J. A.Brown, T.Cameron, A.Cochran, W. D.Demangeon, O.Deleuil, M.Diaz, Rodrigo FernandoFulton, B.Horne, K.Hébrard, G.Lillo-Box, J.Lovis, C.Mawet, D.Ngo, H.Osborn, H.Palle, E.Petigura, E.Pollacco, D.Santos, N.Sefako, R.Siverd, R.Sousa, S.G.Tsantaki, M.Planetary SystemsTechniques: PhotometricTechniques: Spectroscopichttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We report the discovery of EPIC 201702477b, a transiting brown dwarf in a long period (40.73691 ±0.00037 day) and eccentric (e = 0.2281 ±0.0026) orbit. This system was initially reported as a planetary candidate based on two transit events seen in K2 Campaign 1 photometry and later validated as an exoplanet candidate. We confirm the transit and refine the ephemeris with two subsequent ground-based detections of the transit using the Las Cumbres Observatory Global Telescope 1 m telescope network. We rule out any transit timing variations above the level of ∼30 s. Using high precision radial velocity measurements from HARPS and SOPHIE we identify the transiting companion as a brown dwarf with a mass, radius, and bulk density of 66.9 ±1.7 M J, 0.757 ±0.065 R J, and 191 ±51 g cm-3 respectively. EPIC 201702477b is the smallest radius brown dwarf yet discovered, with a mass just below the H-burning limit. It has the highest density of any planet, substellar mass object, or main-sequence star discovered so far. We find evidence in the set of known transiting brown dwarfs for two populations of objects - high mass brown dwarfs and low mass brown dwarfs. The higher-mass population have radii in very close agreement to theoretical models, and show a lower-mass limit around 60 M J. This may be the signature of mass-dependent ejection of systems during the formation process.Fil: Bayliss, D.. Universidad de Ginebra; SuizaFil: Hojjatpanah, S.. Universidad de Porto; PortugalFil: Santerne, A.. Universidad de Porto; PortugalFil: Dragomir, D.. University of Chicago; Estados Unidos. Massachusetts Institute of Technology; Estados UnidosFil: Zhou, G.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Shporer, A.. California Institute Of Technology; Estados UnidosFil: Colón, K. D.. National Aeronautics and Space Administration; Estados UnidosFil: Almenara, J.. Universite Joseph Fourier. Observatoire de Grenoble; FranciaFil: Armstrong, D. J.. University Of Warwick; Reino Unido. The Queens University Of Belfast; IrlandaFil: Barrado, D.. Centro de Astrobiologia; EspañaFil: Barros, S.C.C.. Universidad de Porto; PortugalFil: Bento, J.. Australian National University; AustraliaFil: Boisse, I.. Laboratoire D; FranciaFil: Bouchy, F.. Universidad de Ginebra; SuizaFil: Brown, D. J. A.. University Of Warwick; Reino UnidoFil: Brown, T.. State University Of Colorado Boulder; Estados UnidosFil: Cameron, A.. University of St. Andrews; Reino UnidoFil: Cochran, W. D.. University of Texas at Austin; Estados UnidosFil: Demangeon, O.. Laboratoire D; FranciaFil: Deleuil, M.. Laboratoire D; FranciaFil: Diaz, Rodrigo Fernando. Universidad de Ginebra; Suiza. 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; ArgentinaFil: Fulton, B.. University Of Hawaii At Manoa; Estados UnidosFil: Horne, K.. University of St. Andrews; Reino UnidoFil: Hébrard, G.. Universite Pierre et Marie Curie; FranciaFil: Lillo-Box, J.. European Southern Observatory; ChileFil: Lovis, C.. Universidad de Ginebra; SuizaFil: Mawet, D.. California Institute Of Technology; Estados UnidosFil: Ngo, H.. California Institute Of Technology; Estados UnidosFil: Osborn, H.. University Of Warwick; Reino UnidoFil: Palle, E.. Instituto Astrofisico de Canarias; EspañaFil: Petigura, E.. California Institute Of Technology; Estados UnidosFil: Pollacco, D.. University Of Warwick; Reino UnidoFil: Santos, N.. Universidad de Porto; PortugalFil: Sefako, R.. South African Astronomical Observatory; SudáfricaFil: Siverd, R.. Las Cumbres Observatory Global Telescope Network, Inc; Estados UnidosFil: Sousa, S.G.. Universidad de Porto; PortugalFil: Tsantaki, M.. Universidad Nacional Autónoma de México; MéxicoIOP Publishing2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23614Bayliss, D.; Hojjatpanah, S.; Santerne, A.; Dragomir, D.; Zhou, G.; et al.; EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT; IOP Publishing; Astronomical Journal; 153; 15; 1-2017; 1-100004-6256CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/153/1/15info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-3881/153/1/15/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:20:00Zoai:ri.conicet.gov.ar:11336/23614instacron: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 11:20:00.805CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
title	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
spellingShingle	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT Bayliss, D. Planetary Systems Techniques: Photometric Techniques: Spectroscopic
title_short	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
title_full	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
title_fullStr	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
title_full_unstemmed	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
title_sort	EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT
dc.creator.none.fl_str_mv	Bayliss, D. Hojjatpanah, S. Santerne, A. Dragomir, D. Zhou, G. Shporer, A. Colón, K. D. Almenara, J. Armstrong, D. J. Barrado, D. Barros, S.C.C. Bento, J. Boisse, I. Bouchy, F. Brown, D. J. A. Brown, T. Cameron, A. Cochran, W. D. Demangeon, O. Deleuil, M. Diaz, Rodrigo Fernando Fulton, B. Horne, K. Hébrard, G. Lillo-Box, J. Lovis, C. Mawet, D. Ngo, H. Osborn, H. Palle, E. Petigura, E. Pollacco, D. Santos, N. Sefako, R. Siverd, R. Sousa, S.G. Tsantaki, M.
author	Bayliss, D.
author_facet	Bayliss, D. Hojjatpanah, S. Santerne, A. Dragomir, D. Zhou, G. Shporer, A. Colón, K. D. Almenara, J. Armstrong, D. J. Barrado, D. Barros, S.C.C. Bento, J. Boisse, I. Bouchy, F. Brown, D. J. A. Brown, T. Cameron, A. Cochran, W. D. Demangeon, O. Deleuil, M. Diaz, Rodrigo Fernando Fulton, B. Horne, K. Hébrard, G. Lillo-Box, J. Lovis, C. Mawet, D. Ngo, H. Osborn, H. Palle, E. Petigura, E. Pollacco, D. Santos, N. Sefako, R. Siverd, R. Sousa, S.G. Tsantaki, M.
author_role	author
author2	Hojjatpanah, S. Santerne, A. Dragomir, D. Zhou, G. Shporer, A. Colón, K. D. Almenara, J. Armstrong, D. J. Barrado, D. Barros, S.C.C. Bento, J. Boisse, I. Bouchy, F. Brown, D. J. A. Brown, T. Cameron, A. Cochran, W. D. Demangeon, O. Deleuil, M. Diaz, Rodrigo Fernando Fulton, B. Horne, K. Hébrard, G. Lillo-Box, J. Lovis, C. Mawet, D. Ngo, H. Osborn, H. Palle, E. Petigura, E. Pollacco, D. Santos, N. Sefako, R. Siverd, R. Sousa, S.G. Tsantaki, M.
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	Planetary Systems Techniques: Photometric Techniques: Spectroscopic
topic	Planetary Systems Techniques: Photometric 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 report the discovery of EPIC 201702477b, a transiting brown dwarf in a long period (40.73691 ±0.00037 day) and eccentric (e = 0.2281 ±0.0026) orbit. This system was initially reported as a planetary candidate based on two transit events seen in K2 Campaign 1 photometry and later validated as an exoplanet candidate. We confirm the transit and refine the ephemeris with two subsequent ground-based detections of the transit using the Las Cumbres Observatory Global Telescope 1 m telescope network. We rule out any transit timing variations above the level of ∼30 s. Using high precision radial velocity measurements from HARPS and SOPHIE we identify the transiting companion as a brown dwarf with a mass, radius, and bulk density of 66.9 ±1.7 M J, 0.757 ±0.065 R J, and 191 ±51 g cm-3 respectively. EPIC 201702477b is the smallest radius brown dwarf yet discovered, with a mass just below the H-burning limit. It has the highest density of any planet, substellar mass object, or main-sequence star discovered so far. We find evidence in the set of known transiting brown dwarfs for two populations of objects - high mass brown dwarfs and low mass brown dwarfs. The higher-mass population have radii in very close agreement to theoretical models, and show a lower-mass limit around 60 M J. This may be the signature of mass-dependent ejection of systems during the formation process. Fil: Bayliss, D.. Universidad de Ginebra; Suiza Fil: Hojjatpanah, S.. Universidad de Porto; Portugal Fil: Santerne, A.. Universidad de Porto; Portugal Fil: Dragomir, D.. University of Chicago; Estados Unidos. Massachusetts Institute of Technology; Estados Unidos Fil: Zhou, G.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Shporer, A.. California Institute Of Technology; Estados Unidos Fil: Colón, K. D.. National Aeronautics and Space Administration; Estados Unidos Fil: Almenara, J.. Universite Joseph Fourier. Observatoire de Grenoble; Francia Fil: Armstrong, D. J.. University Of Warwick; Reino Unido. The Queens University Of Belfast; Irlanda Fil: Barrado, D.. Centro de Astrobiologia; España Fil: Barros, S.C.C.. Universidad de Porto; Portugal Fil: Bento, J.. Australian National University; Australia Fil: Boisse, I.. Laboratoire D; Francia Fil: Bouchy, F.. Universidad de Ginebra; Suiza Fil: Brown, D. J. A.. University Of Warwick; Reino Unido Fil: Brown, T.. State University Of Colorado Boulder; Estados Unidos Fil: Cameron, A.. University of St. Andrews; Reino Unido Fil: Cochran, W. D.. University of Texas at Austin; Estados Unidos Fil: Demangeon, O.. Laboratoire D; Francia Fil: Deleuil, M.. Laboratoire D; Francia Fil: Diaz, Rodrigo Fernando. Universidad de Ginebra; Suiza. 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 Fil: Fulton, B.. University Of Hawaii At Manoa; Estados Unidos Fil: Horne, K.. University of St. Andrews; Reino Unido Fil: Hébrard, G.. Universite Pierre et Marie Curie; Francia Fil: Lillo-Box, J.. European Southern Observatory; Chile Fil: Lovis, C.. Universidad de Ginebra; Suiza Fil: Mawet, D.. California Institute Of Technology; Estados Unidos Fil: Ngo, H.. California Institute Of Technology; Estados Unidos Fil: Osborn, H.. University Of Warwick; Reino Unido Fil: Palle, E.. Instituto Astrofisico de Canarias; España Fil: Petigura, E.. California Institute Of Technology; Estados Unidos Fil: Pollacco, D.. University Of Warwick; Reino Unido Fil: Santos, N.. Universidad de Porto; Portugal Fil: Sefako, R.. South African Astronomical Observatory; Sudáfrica Fil: Siverd, R.. Las Cumbres Observatory Global Telescope Network, Inc; Estados Unidos Fil: Sousa, S.G.. Universidad de Porto; Portugal Fil: Tsantaki, M.. Universidad Nacional Autónoma de México; México
description	We report the discovery of EPIC 201702477b, a transiting brown dwarf in a long period (40.73691 ±0.00037 day) and eccentric (e = 0.2281 ±0.0026) orbit. This system was initially reported as a planetary candidate based on two transit events seen in K2 Campaign 1 photometry and later validated as an exoplanet candidate. We confirm the transit and refine the ephemeris with two subsequent ground-based detections of the transit using the Las Cumbres Observatory Global Telescope 1 m telescope network. We rule out any transit timing variations above the level of ∼30 s. Using high precision radial velocity measurements from HARPS and SOPHIE we identify the transiting companion as a brown dwarf with a mass, radius, and bulk density of 66.9 ±1.7 M J, 0.757 ±0.065 R J, and 191 ±51 g cm-3 respectively. EPIC 201702477b is the smallest radius brown dwarf yet discovered, with a mass just below the H-burning limit. It has the highest density of any planet, substellar mass object, or main-sequence star discovered so far. We find evidence in the set of known transiting brown dwarfs for two populations of objects - high mass brown dwarfs and low mass brown dwarfs. The higher-mass population have radii in very close agreement to theoretical models, and show a lower-mass limit around 60 M J. This may be the signature of mass-dependent ejection of systems during the formation process.
publishDate	2017
dc.date.none.fl_str_mv	2017-01
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/11336/23614 Bayliss, D.; Hojjatpanah, S.; Santerne, A.; Dragomir, D.; Zhou, G.; et al.; EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT; IOP Publishing; Astronomical Journal; 153; 15; 1-2017; 1-10 0004-6256 CONICET Digital CONICET
url	http://hdl.handle.net/11336/23614
identifier_str_mv	Bayliss, D.; Hojjatpanah, S.; Santerne, A.; Dragomir, D.; Zhou, G.; et al.; EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT; IOP Publishing; Astronomical Journal; 153; 15; 1-2017; 1-10 0004-6256 CONICET Digital CONICET
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/153/1/15 info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-3881/153/1/15/meta
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	IOP Publishing
publisher.none.fl_str_mv	IOP Publishing
dc.source.none.fl_str_mv	reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str	CONICET Digital (CONICET)
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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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EPIC 201702477b: A TRANSITING BROWN DWARF from K2 in A 41 DAY ORBIT

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