Charon's size and an upper limit on its atmosphere from a stellar occultation

Autores
Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; Lecacheux, J.; Lellouch, E.; Renner, S.; Pau, S.; Roques, F.; Widemann, T.; Colas, F.; Vachier, F.; Martins, R. Vieira; Ageorges, N.; Hainaut, O.; Marco, O.; Beisker, W.; Hummel, E.; Feinstein Baigorri, Carlos; Levato, Orlando Hugo; Maury, A.; Frappa, E.; Gaillard, B.; Lavayssière, M.; Di Sora, M.; Mallia, F.; Masi, G.; Behrend, R.; Carrier, F.; Mousis, O.; Rousselot, P.; Alvarez Candal, Alvaro Augusto; Lazzaro, D.; Veiga, C.; Andrei, A.H.; Assafin, M.; Da Silva Neto, D.N.; Jacques, C.; Pimentel, E.; Weaver, D.; Lecampion, J.-F.; Doncel, F.; Momiyama, T.; Tancredi, G.
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group.
Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Bellucci, A.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Gendron, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lacombe, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lacour, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lecacheux, J.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lellouch, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Renner, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Pau, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Roques, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Widemann, T.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Colas, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;
Fil: Vachier, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;
Fil: Martins, R. Vieira. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Ageorges, N.. European Southern Observatory Santiago; Chile
Fil: Hainaut, O.. European Southern Observatory Santiago; Chile
Fil: Marco, O.. European Southern Observatory Santiago; Chile
Fil: Beisker, W.. International Occultation Timing Association;
Fil: Hummel, E.. International Occultation Timing Association;
Fil: Feinstein Baigorri, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Maury, A.. Gene Shoemaker Observatory; Chile
Fil: Frappa, E.. Planétarium de Saint-etienne;
Fil: Gaillard, B.. Association Des Utilisateurs de Détecteurs Electroniques (aude);
Fil: Lavayssière, M.. Association Des Utilisateurs de Détecteurs Electroniques (aude);
Fil: Di Sora, M.. Campo Catino Austral Observatory; Chile
Fil: Mallia, F.. Campo Catino Austral Observatory; Chile
Fil: Masi, G.. Campo Catino Austral Observatory; Chile. Universita Tor Vergata; Italia
Fil: Behrend, R.. Universidad de Ginebra; Suiza
Fil: Carrier, F.. Universidad de Ginebra; Suiza
Fil: Mousis, O.. Observatoire de Besancon;
Fil: Rousselot, P.. Observatoire de Besancon;
Fil: Alvarez Candal, Alvaro Augusto. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Lazzaro, D.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Veiga, C.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil
Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Da Silva Neto, D.N.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Jacques, C.. Observatório CEAMIG-REA; Brasil
Fil: Pimentel, E.. Observatório CEAMIG-REA; Brasil
Fil: Weaver, D.. Universidade de Fortaleza;
Fil: Lecampion, J.-F.. Observatoire Aquitain Des Sciences de L'univers;
Fil: Doncel, F.. Universidad Nacional de Asunción; Paraguay
Fil: Momiyama, T.. Universidad Nacional de Asunción; Paraguay
Fil: Tancredi, G.. Facultad de Ciencias; Uruguay
Materia
Charon
Pluto
Satellites
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:11336/39754

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oai_identifier_str oai:ri.conicet.gov.ar:11336/39754
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Charon's size and an upper limit on its atmosphere from a stellar occultationSicardy, B.Bellucci, A.Gendron, E.Lacombe, F.Lacour, S.Lecacheux, J.Lellouch, E.Renner, S.Pau, S.Roques, F.Widemann, T.Colas, F.Vachier, F.Martins, R. VieiraAgeorges, N.Hainaut, O.Marco, O.Beisker, W.Hummel, E.Feinstein Baigorri, CarlosLevato, Orlando HugoMaury, A.Frappa, E.Gaillard, B.Lavayssière, M.Di Sora, M.Mallia, F.Masi, G.Behrend, R.Carrier, F.Mousis, O.Rousselot, P.Alvarez Candal, Alvaro AugustoLazzaro, D.Veiga, C.Andrei, A.H.Assafin, M.Da Silva Neto, D.N.Jacques, C.Pimentel, E.Weaver, D.Lecampion, J.-F.Doncel, F.Momiyama, T.Tancredi, G.CharonPlutoSatelliteshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group.Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Bellucci, A.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Gendron, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lacombe, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lacour, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lecacheux, J.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Lellouch, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Renner, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Pau, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Roques, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Widemann, T.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;Fil: Colas, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;Fil: Vachier, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;Fil: Martins, R. Vieira. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Ageorges, N.. European Southern Observatory Santiago; ChileFil: Hainaut, O.. European Southern Observatory Santiago; ChileFil: Marco, O.. European Southern Observatory Santiago; ChileFil: Beisker, W.. International Occultation Timing Association;Fil: Hummel, E.. International Occultation Timing Association;Fil: Feinstein Baigorri, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; ArgentinaFil: Maury, A.. Gene Shoemaker Observatory; ChileFil: Frappa, E.. Planétarium de Saint-etienne;Fil: Gaillard, B.. Association Des Utilisateurs de Détecteurs Electroniques (aude);Fil: Lavayssière, M.. Association Des Utilisateurs de Détecteurs Electroniques (aude);Fil: Di Sora, M.. Campo Catino Austral Observatory; ChileFil: Mallia, F.. Campo Catino Austral Observatory; ChileFil: Masi, G.. Campo Catino Austral Observatory; Chile. Universita Tor Vergata; ItaliaFil: Behrend, R.. Universidad de Ginebra; SuizaFil: Carrier, F.. Universidad de Ginebra; SuizaFil: Mousis, O.. Observatoire de Besancon;Fil: Rousselot, P.. Observatoire de Besancon;Fil: Alvarez Candal, Alvaro Augusto. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Lazzaro, D.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Veiga, C.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; BrasilFil: Assafin, M.. Universidade Federal do Rio de Janeiro; BrasilFil: Da Silva Neto, D.N.. Universidade Federal do Rio de Janeiro; BrasilFil: Jacques, C.. Observatório CEAMIG-REA; BrasilFil: Pimentel, E.. Observatório CEAMIG-REA; BrasilFil: Weaver, D.. Universidade de Fortaleza;Fil: Lecampion, J.-F.. Observatoire Aquitain Des Sciences de L'univers;Fil: Doncel, F.. Universidad Nacional de Asunción; ParaguayFil: Momiyama, T.. Universidad Nacional de Asunción; ParaguayFil: Tancredi, G.. Facultad de Ciencias; UruguayNature Publishing Group2006-01info: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/11336/39754Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; et al.; Charon's size and an upper limit on its atmosphere from a stellar occultation; Nature Publishing Group; Nature; 439; 7072; 1-2006; 52-540028-0836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/nature04351info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/nature04351info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2006Natur.439...52Sinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:53:26Zoai:ri.conicet.gov.ar:11336/39754instacron: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 09:53:26.406CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Charon's size and an upper limit on its atmosphere from a stellar occultation
title Charon's size and an upper limit on its atmosphere from a stellar occultation
spellingShingle Charon's size and an upper limit on its atmosphere from a stellar occultation
Sicardy, B.
Charon
Pluto
Satellites
title_short Charon's size and an upper limit on its atmosphere from a stellar occultation
title_full Charon's size and an upper limit on its atmosphere from a stellar occultation
title_fullStr Charon's size and an upper limit on its atmosphere from a stellar occultation
title_full_unstemmed Charon's size and an upper limit on its atmosphere from a stellar occultation
title_sort Charon's size and an upper limit on its atmosphere from a stellar occultation
dc.creator.none.fl_str_mv Sicardy, B.
Bellucci, A.
Gendron, E.
Lacombe, F.
Lacour, S.
Lecacheux, J.
Lellouch, E.
Renner, S.
Pau, S.
Roques, F.
Widemann, T.
Colas, F.
Vachier, F.
Martins, R. Vieira
Ageorges, N.
Hainaut, O.
Marco, O.
Beisker, W.
Hummel, E.
Feinstein Baigorri, Carlos
Levato, Orlando Hugo
Maury, A.
Frappa, E.
Gaillard, B.
Lavayssière, M.
Di Sora, M.
Mallia, F.
Masi, G.
Behrend, R.
Carrier, F.
Mousis, O.
Rousselot, P.
Alvarez Candal, Alvaro Augusto
Lazzaro, D.
Veiga, C.
Andrei, A.H.
Assafin, M.
Da Silva Neto, D.N.
Jacques, C.
Pimentel, E.
Weaver, D.
Lecampion, J.-F.
Doncel, F.
Momiyama, T.
Tancredi, G.
author Sicardy, B.
author_facet Sicardy, B.
Bellucci, A.
Gendron, E.
Lacombe, F.
Lacour, S.
Lecacheux, J.
Lellouch, E.
Renner, S.
Pau, S.
Roques, F.
Widemann, T.
Colas, F.
Vachier, F.
Martins, R. Vieira
Ageorges, N.
Hainaut, O.
Marco, O.
Beisker, W.
Hummel, E.
Feinstein Baigorri, Carlos
Levato, Orlando Hugo
Maury, A.
Frappa, E.
Gaillard, B.
Lavayssière, M.
Di Sora, M.
Mallia, F.
Masi, G.
Behrend, R.
Carrier, F.
Mousis, O.
Rousselot, P.
Alvarez Candal, Alvaro Augusto
Lazzaro, D.
Veiga, C.
Andrei, A.H.
Assafin, M.
Da Silva Neto, D.N.
Jacques, C.
Pimentel, E.
Weaver, D.
Lecampion, J.-F.
Doncel, F.
Momiyama, T.
Tancredi, G.
author_role author
author2 Bellucci, A.
Gendron, E.
Lacombe, F.
Lacour, S.
Lecacheux, J.
Lellouch, E.
Renner, S.
Pau, S.
Roques, F.
Widemann, T.
Colas, F.
Vachier, F.
Martins, R. Vieira
Ageorges, N.
Hainaut, O.
Marco, O.
Beisker, W.
Hummel, E.
Feinstein Baigorri, Carlos
Levato, Orlando Hugo
Maury, A.
Frappa, E.
Gaillard, B.
Lavayssière, M.
Di Sora, M.
Mallia, F.
Masi, G.
Behrend, R.
Carrier, F.
Mousis, O.
Rousselot, P.
Alvarez Candal, Alvaro Augusto
Lazzaro, D.
Veiga, C.
Andrei, A.H.
Assafin, M.
Da Silva Neto, D.N.
Jacques, C.
Pimentel, E.
Weaver, D.
Lecampion, J.-F.
Doncel, F.
Momiyama, T.
Tancredi, G.
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
author
author
author
dc.subject.none.fl_str_mv Charon
Pluto
Satellites
topic Charon
Pluto
Satellites
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group.
Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Bellucci, A.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Gendron, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lacombe, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lacour, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lecacheux, J.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Lellouch, E.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Renner, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Pau, S.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Roques, F.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Widemann, T.. Gepi - Galaxies, Etoiles, Physique, Instrumentation;
Fil: Colas, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;
Fil: Vachier, F.. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides;
Fil: Martins, R. Vieira. Imcce - Institut de Mecanique Celeste Et de Calcul Des Ephemerides; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Ageorges, N.. European Southern Observatory Santiago; Chile
Fil: Hainaut, O.. European Southern Observatory Santiago; Chile
Fil: Marco, O.. European Southern Observatory Santiago; Chile
Fil: Beisker, W.. International Occultation Timing Association;
Fil: Hummel, E.. International Occultation Timing Association;
Fil: Feinstein Baigorri, Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Levato, Orlando Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Maury, A.. Gene Shoemaker Observatory; Chile
Fil: Frappa, E.. Planétarium de Saint-etienne;
Fil: Gaillard, B.. Association Des Utilisateurs de Détecteurs Electroniques (aude);
Fil: Lavayssière, M.. Association Des Utilisateurs de Détecteurs Electroniques (aude);
Fil: Di Sora, M.. Campo Catino Austral Observatory; Chile
Fil: Mallia, F.. Campo Catino Austral Observatory; Chile
Fil: Masi, G.. Campo Catino Austral Observatory; Chile. Universita Tor Vergata; Italia
Fil: Behrend, R.. Universidad de Ginebra; Suiza
Fil: Carrier, F.. Universidad de Ginebra; Suiza
Fil: Mousis, O.. Observatoire de Besancon;
Fil: Rousselot, P.. Observatoire de Besancon;
Fil: Alvarez Candal, Alvaro Augusto. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Lazzaro, D.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Veiga, C.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil
Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Da Silva Neto, D.N.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Jacques, C.. Observatório CEAMIG-REA; Brasil
Fil: Pimentel, E.. Observatório CEAMIG-REA; Brasil
Fil: Weaver, D.. Universidade de Fortaleza;
Fil: Lecampion, J.-F.. Observatoire Aquitain Des Sciences de L'univers;
Fil: Doncel, F.. Universidad Nacional de Asunción; Paraguay
Fil: Momiyama, T.. Universidad Nacional de Asunción; Paraguay
Fil: Tancredi, G.. Facultad de Ciencias; Uruguay
description Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass. The precise radii of Pluto and Charon have remained uncertain, leading to large uncertainties on their densities2. Although stellar occultations by Charon are in principle a powerful way of measuring its size, they are rare, as the satellite subtends less than 0.3 microradians (0.06 arcsec) on the sky. One occultation (in 1980) yielded a lower limit of 600 km for the satellite's radius 3, which was later refined to 601.5 km (ref. 4). Here we report observations from a multi-station stellar occultation by Charon, which we use to derive a radius, RC = 603.6 ± 1.4 km (1σ), and a density of ρ = 1.71 ± 0.08 g cm-3. This occultation also provides upper limits of 110 and 15 (3σ) nanobar for an atmosphere around Charon, assuming respectively a pure nitrogen or pure methane atmosphere. © 2006 Nature Publishing Group.
publishDate 2006
dc.date.none.fl_str_mv 2006-01
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/11336/39754
Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; et al.; Charon's size and an upper limit on its atmosphere from a stellar occultation; Nature Publishing Group; Nature; 439; 7072; 1-2006; 52-54
0028-0836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/39754
identifier_str_mv Sicardy, B.; Bellucci, A.; Gendron, E.; Lacombe, F.; Lacour, S.; et al.; Charon's size and an upper limit on its atmosphere from a stellar occultation; Nature Publishing Group; Nature; 439; 7072; 1-2006; 52-54
0028-0836
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/nature04351
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/nature04351
info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2006Natur.439...52S
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
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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_ 1844613631768002560
score 13.070432