Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1051/0004-6361/202141443 http://hdl.handle.net/11449/239927 |
Resumo: | Context. A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves from this event, 42 of which yielded a central flash detection. Aims. We aimed at constraining Triton's atmospheric structure and the seasonal variations of its atmospheric pressure since the Voyager 2 epoch (1989). We also derived the shape of the lower atmosphere from central flash analysis. Methods. We used Abel inversions and direct ray-tracing code to provide the density, pressure, and temperature profiles in the altitude range ∼8 km to ∼190 km, corresponding to pressure levels from 9 μbar down to a few nanobars. Results. (i) A pressure of 1.18 ± 0.03 μbar is found at a reference radius of 1400 km (47 km altitude). (ii) A new analysis of the Voyager 2 radio science occultation shows that this is consistent with an extrapolation of pressure down to the surface pressure obtained in 1989. (iii) A survey of occultations obtained between 1989 and 2017 suggests that an enhancement in surface pressure as reported during the 1990s might be real, but debatable, due to very few high S/N light curves and data accessible for reanalysis. The volatile transport model analysed supports a moderate increase in surface pressure, with a maximum value around 2005-2015 no higher than 23 μbar. The pressures observed in 1995-1997 and 2017 appear mutually inconsistent with the volatile transport model presented here. (iv) The central flash structure does not show evidence of an atmospheric distortion. We find an upper limit of 0.0011 for the apparent oblateness of the atmosphere near the 8 km altitude. |
id |
UNSP_771fc4e26b537b69c259dab25ca09c76 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/239927 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observationsMethods: data analysisMethods: observationalPlanets and satellites: atmospheresPlanets and satellites: physical evolutionTechniques: photometricContext. A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves from this event, 42 of which yielded a central flash detection. Aims. We aimed at constraining Triton's atmospheric structure and the seasonal variations of its atmospheric pressure since the Voyager 2 epoch (1989). We also derived the shape of the lower atmosphere from central flash analysis. Methods. We used Abel inversions and direct ray-tracing code to provide the density, pressure, and temperature profiles in the altitude range ∼8 km to ∼190 km, corresponding to pressure levels from 9 μbar down to a few nanobars. Results. (i) A pressure of 1.18 ± 0.03 μbar is found at a reference radius of 1400 km (47 km altitude). (ii) A new analysis of the Voyager 2 radio science occultation shows that this is consistent with an extrapolation of pressure down to the surface pressure obtained in 1989. (iii) A survey of occultations obtained between 1989 and 2017 suggests that an enhancement in surface pressure as reported during the 1990s might be real, but debatable, due to very few high S/N light curves and data accessible for reanalysis. The volatile transport model analysed supports a moderate increase in surface pressure, with a maximum value around 2005-2015 no higher than 23 μbar. The pressures observed in 1995-1997 and 2017 appear mutually inconsistent with the volatile transport model presented here. (iv) The central flash structure does not show evidence of an atmospheric distortion. We find an upper limit of 0.0011 for the apparent oblateness of the atmosphere near the 8 km altitude.LESIA Observatoire de Paris Université PSL CNRS Sorbonne Université, 5 place Jules JanssenUNESP - São Paulo State University Grupo de Dinâmica Orbital e Planetologia, SPLaboratório Interinstitucional de E-Astronomia - LIneA, Rua Gal. José Cristino 77, RJInstituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía s/nDepartments of Earth and Planetary Sciences and Physics and Astronomy Johns Hopkins University, 3400 N. Charles StreetNational Aeronautics and Space Administration (NASA) Ames Research Center Space Science DivisionLaboratoire de Météorologie Dynamique IPSL Université PSL CNRS Sorbonne Université, 4 place JussieuInstitut Polytechnique des Sciences Avancées IPSA, 63 boulevard de BrandebourgIMCCE/Observatoire de Paris Université PSL CNRS Sorbonne Université Univ. Lille, Avenue Denfert RochereauUniversité Côte d'Azur Observatoire de la Côte d'Azur CNRS Laboratoire Lagrange, Bd de l'Observatoire, CS 34229Departamento de Astronomía Universidad de Chile, Camino del Observatorio 1515, Las CondesComisión Nacional de Investigatión y Desarrollo Aeroespacial Del Perú - CONIDAObservatorio Astronómico de MoqueguaNaXys University of Namur, 8 Rempart de la ViergeFlorida Space Institute University of Central Florida, 12354 Research Parkway, Partnership 1Federal University of Technology-Paraná (UTFPR / DAFIS)Observatório Nacional/MCTICUniversidade Federal Do Rio de Janeiro - Observatório Do Valongo, Ladeira Pedro Antônio 43, CEP - RJPolo Educacional Sesc, Av. Ayrton Senna, 56, Jacarepaguá, CEPUniversité de Lille Observatoire de Lille, 1, impasse de l'ObservatoireDpto. Física Aplicada Escuela de Ingeniería de Bilbao Universidad Del País Vasco (UPV/EHU), Plaza Ingeniero Torres Quevedo 1Internationale Amateursternwarte (IAS) E. V., Mittelstr. 6International Occultation Timing Association - European Section (IOTA/ES), Am Brombeerhag 13Trans-Tasman Occultation Alliance (TTOA), PO Box 2241International Occultation Timing Association (IOTA), PO Box 152Vereinigung der Sternfreunde E.V. (VdS), Heppenheim an der BergstrasseSaint-Sulpice Observatory Club Eclipse Thierry Midavaine, 102 rue de VaugirardDutch Occultation Association/Dutch Observers of Asteroids (DOA)Archenhold Sternwarte, Alt-Treptow 1British Astronomical Association, Burlington House, PiccadillyEuropean Space Agency ESA ESTEC SCI-S, Keplerlaan 1, AZSection of Astrophysics Astronomy and Mechanics Department of Physics National and Kapodistrian University of Athens, ZografosHellenic Amateur Astronomy AssociationArmagh Observatory and PlanetariumInstitute for Astronomy Astrophysics Space Applications and Remote Sensing National Observatory of Athens, P. PenteliDepartment of Physics University of CreteInstitute of Astrophysics Foundation for Research and Technology-HellasAstronomical Institute of the Czech Academy of Sciences, Fricova 298, OndřejovSternwarte StuttgartAstronomische Arbeitsgemeinschaft Wanne-Eickel / Herne E.V., BreitenwegObservatory: Sternwarte Zollern-Alb, Rosenfeld-Brittheim e.V.AVV (Astronomische Vereinigung Vulkaneifel) Astronomical Society Volcano EifelDepartment of Physics Ariel UniversityHamburger Sternwarte, Gojenbergsweg 112Selztal Observatory, BechtolsheimerBochumer Herbsttagung der Amateuratsronomen (BoHeTa)Gesellschaft für Volkstümliche Astronomie E.V. Hamburg Hammerichstraße e 5Gruppo Astrofili Massesi EURASTERAstronomical Observatory of the Autonomous Region of the Aosta Valley (AO)Mount Agliale Observatory, Galileo Park, Vinewood HillsAAB - Associazione Astrofili BolognesiINAF - Osservatorio Astrofisico di Catania, Via S. Sofia 78Associazione Astrofili Aurunca, 1, Via Giordano BrunoAstrocampania Associazione - Osservatorio Salvatore di Giacomo - Agerola (NAGruppo Astrofili Catanesi, via Milo 28Università di Catania Dipartimento di Fisica e Astronomia Sezione Astrofisica, Via S. Sofia 78Astronomical Society of TunisiaSociété Astronomique de GenèveObservatoire de GenèveAstroVal Observatoire de la Vallée de Joux, Le SolliatObservatoire François-Xavier Bagnoud, St-LucSociété Neuchâteloise d'AstronomieDepartment of Physics ETH Zurich, Wolfgang-Pauli-strasse 27Institute for Particle Physics and Astrophysics ETH Zurich, Wolfgang-Pauli-strasse 27Observatoire Centre-ArdenneADAGIO Belesta Observatory (A05: MPC Code), Belesta en Lauragais 31Observatoire les PléiadesObservatoire des Baronnies ProvençalesAssociation Photographie Astronomie Montredonnaise (APAM)Observatoire de la Côte d'Azur (OCA), Boulevard de l'ObservatoireCiel et Espace, 63-65 boulevard MassenaAlbireo78 AssociationSadr AssociationSociété Astronomique de FranceInstituto de Astrofísica e Ciências Do Espaço (IA) Universidade de Lisboa Tapada da Ajuda, Edifício Leste - 2 PisoEuraster, 1 rue du TonnelierAirylab, Greoux les BainsObservatoire des Côtes-de-Meuse, 8 Place de Verdun, Viéville-sous-les-CôtesObservatoire Midi-Pyrénées et Université Toulouse-III IRAPObservatoire de Saint-CapraisInstitut Supérieur de l'Aéronautique et de l'Espace ISAE-SUPAERO Toulouse UniversityUniversité Toulouse-III FSICentre d'Astronomie93 Société Lorraine d'AstronomieUranoscope de l'Ile de France Gretz Armainvilliers, UaiGEOPS - Géosciences Paris Sud Univ. Paris-Sud CNRS Université Paris-SaclayAssociation Marseillaise d'Astronomie (AMAS)O.A.B.A.C. - Observatoire Astronomique du Beausset André Coliac, BeaussetObservatoire de PuimichelObservatoire Charles FehrenbachAstro Club de FranceUniversité Grenoble Alpes InriaUniversité Paris-Saclay Université Paris-SudSAS les Pleiades (Opticiens)LOMA CNRS-Université de Bordeaux UMR5798Vendéen Astronomical Center, VendéeAssociation DinastroCenter of Research in Astronomy Astrophysics and Geophysics (CRAAG) Algiers ObservatoryHampshire Astronomical GroupRoyal Astronomical Society, Burlington House, PiccadillyAmerican Association of Variable Star Observers, 49 Bay State RoadUCL Observatory Dept. of Physics and Astronomy University College London, Gower St.Reading Astronomical Society, EarleyDept. of Software Engineering University of GranadaSAG Sociedad Astronómica de GranadaPuckett Observatory, PO BOX 818Centro de Estudios de Física Del Cosmos de Aragón, Plaza San Juan 1Astrophysics Department Universidad de la Laguna, TenerifeObservatorio de Forcarei, Forcarei, PontevedraObservatorio Astronómico de Albox - C, Poeta Martin Torregrosa no8 2 A, AlboxLiverpool Telescope Group Astrophysics Research Institute Liverpool John Moores UniversityObservatorio Astronómico de GuirguillanoObservatorio Astronómico la Hita, La Villa de Don FadriqueObservatorio Astronómico Universidad de ValenciaAgrupacio Astronomica de Sabadell Occultation's Group, C/. Prat de la Riba, s/n, SabadellAstrophysics Department CEA/DRF/IRFU/DAp Université Paris Saclay UMR AIMInstitut de Ciències Del Espai Campus UAB Carrer de Can Magrans S/nInstituto Politécnico de Tomar CI2 e U.D. Matemática e FísicaObservatório Astronómico Centro Ciência Viva de ConstânciaCentro Ciência Viva Do AlgarveFundamental and Applied Physics Laboratory - Safi Physics Department Polydisciplinary Faculty Cadi Ayyad UniversityOukaimeden Observatory High Energy Physics and Astrophysics Laboratory FSSM Cadi Ayyad UniversityAstrobiology Research Unit Université de Liège, 19C Allée du 6 AoûtLaboratory of High Energy Physics and Astrophysics Physics Department Cadi Ayad University, PB 2390STAR Institute Université de Liège, Allée du 6 août, 19CDepartment of Astronomy Carl Sagan Institute Cornell University, Space Sciences BuildingCornell Center for Astrophysics and Planetary Science Carl Sagan Institute Cornell University, Space Sciences BuildingDepartment of Physics and Astronomy University of Toledo, 2801 West Bancroft StreetDepartment of Physics and Astronomy Appalachian State UniversityDepartment of Physics and Astronomy University of North CarolinaCentral (Pulkovo) Observatory Russian Academy of Sciences, 65/1 Pulkovskoye Ave.Association de Gestion de l'Observatoire Réunionais d'Astronomie (AGORA) Observatoire des Makes, La Réunion IslandAssociation Réunionnaise Pour l'Etude du Ciel Austral (ARECA), La Réunion IslandPlanétarium de Vaulx-en-Velin, Place de la NationAssociation AT60 Observatoire du Pic du MidiLunar and Planetary Laboratory University of ArizonaReitsema Enterprises Inc, 1584 Waukazoo DriveAix Marseille Univ CNRS CNES LAMAstronomical Association of QueenslandBundaberg Astronomical Society Inc.Brisbane Astronomical SocietyUNESP - São Paulo State University Grupo de Dinâmica Orbital e Planetologia, SPSorbonne UniversitéUniversidade Estadual Paulista (UNESP)Laboratório Interinstitucional de E-Astronomia - LIneAInstituto de Astrofísica de Andalucía (IAA-CSIC)Johns Hopkins UniversitySpace Science DivisionInstitut Polytechnique des Sciences Avancées IPSAUniv. LilleLaboratoire LagrangeUniversidad de ChileComisión Nacional de Investigatión y Desarrollo Aeroespacial Del Perú - CONIDAObservatorio Astronómico de MoqueguaUniversity of NamurUniversity of Central FloridaFederal University of Technology-Paraná (UTFPR / DAFIS)Observatório Nacional/MCTICUniversidade Federal do Rio de Janeiro (UFRJ)Polo Educacional SescObservatoire de LilleUniversidad Del País Vasco (UPV/EHU)Internationale Amateursternwarte (IAS) E. V.International Occultation Timing Association - European Section (IOTA/ES)Trans-Tasman Occultation Alliance (TTOA)International Occultation Timing Association (IOTA)Vereinigung der Sternfreunde E.V. (VdS)Thierry MidavaineDutch Occultation Association/Dutch Observers of Asteroids (DOA)Archenhold SternwarteBritish Astronomical AssociationESTEC SCI-SNational and Kapodistrian University of AthensHellenic Amateur Astronomy AssociationArmagh Observatory and PlanetariumNational Observatory of AthensUniversity of CreteFoundation for Research and Technology-HellasAstronomical Institute of the Czech Academy of SciencesSternwarte StuttgartAstronomische Arbeitsgemeinschaft Wanne-Eickel / Herne E.V.Observatory: Sternwarte Zollern-AlbAVV (Astronomische Vereinigung Vulkaneifel) Astronomical Society Volcano EifelAriel UniversityHamburger SternwarteSelztal ObservatoryBochumer Herbsttagung der Amateuratsronomen (BoHeTa)Hammerichstraße e 5EURASTER(AO)Mount Agliale ObservatoryAAB - Associazione Astrofili BolognesiINAF - Osservatorio Astrofisico di CataniaAssociazione Astrofili AuruncaAstrocampania Associazione - Osservatorio Salvatore di Giacomo - Agerola (NAGruppo Astrofili CatanesiSezione AstrofisicaAstronomical Society of TunisiaSociété Astronomique de GenèveObservatoire de GenèveObservatoire de la Vallée de JouxObservatoire François-Xavier BagnoudSociété Neuchâteloise d'AstronomieETH ZurichObservatoire Centre-ArdenneBelesta Observatory (A05: MPC Code)Observatoire les PléiadesObservatoire des Baronnies ProvençalesAssociation Photographie Astronomie Montredonnaise (APAM)Observatoire de la Côte d'Azur (OCA)Ciel et EspaceAlbireo78 AssociationSadr AssociationSociété Astronomique de FranceTapada da AjudaEurasterAirylabObservatoire des Côtes-de-MeuseIRAPObservatoire de Saint-CapraisToulouse UniversityFSICentre d'Astronomie93 Société Lorraine d'AstronomieGretz ArmainvilliersUniversité Paris-SaclayAssociation Marseillaise d'Astronomie (AMAS)O.A.B.A.C. - Observatoire Astronomique du Beausset André ColiacObservatoire de PuimichelObservatoire Charles FehrenbachAstro Club de FranceInriaUniversité Paris-SudSAS les Pleiades (Opticiens)LOMA CNRS-Université de Bordeaux UMR5798Vendéen Astronomical CenterAssociation DinastroAlgiers ObservatoryHampshire Astronomical GroupRoyal Astronomical SocietyAmerican Association of Variable Star ObserversUniversity College LondonReading Astronomical SocietyUniversity of GranadaSociedad Astronómica de GranadaPuckett ObservatoryCentro de Estudios de Física Del Cosmos de AragónUniversidad de la LagunaObservatorio de ForcareiObservatorio Astronómico de Albox - CLiverpool John Moores UniversityObservatorio Astronómico de GuirguillanoObservatorio Astronómico la HitaUniversidad de ValenciaOccultation's GroupUMR AIMS/nCI2 e U.D. Matemática e FísicaCentro Ciência Viva de ConstânciaCentro Ciência Viva Do AlgarveCadi Ayyad UniversityUniversité de LiègeCadi Ayad UniversityCornell UniversityUniversity of ToledoAppalachian State UniversityUniversity of North CarolinaRussian Academy of SciencesObservatoire des MakesAssociation Réunionnaise Pour l'Etude du Ciel Austral (ARECA)Planétarium de Vaulx-en-VelinObservatoire du Pic du MidiUniversity of ArizonaReitsema Enterprises IncLAMAstronomical Association of QueenslandBundaberg Astronomical Society Inc.Brisbane Astronomical SocietyOliveira, J. MarquesSicardy, B.Gomes-Júnior, A. R. [UNESP]Ortiz, J. L.Strobel, D. F.Bertrand, T.Forget, F.Lellouch, E.Desmars, J.Bérard, D.Doressoundiram, A.Lecacheux, J.Leiva, R.Meza, E.Roques, F.Souami, D.Widemann, T.Santos-Sanz, P.Morales, N.Duffard, R.Fernández-Valenzuela, E.Castro-Tirado, A. J.Braga-Ribas, F.Morgado, B. E.Assafin, M.Camargo, J. I.B.Vieira-Martins, R.Benedetti-Rossi, G. [UNESP]Santos-Filho, S.Banda-Huarca, M. V.Quispe-Huaynasi, F.Pereira, C. L.Rommel, F. L.Margoti, G.Dias-Oliveira, A.Colas, F.Berthier, J.Renner, S.Hueso, R.Pérez-Hoyos, S.Sánchez-Lavega, A.Rojas, J. F.Beisker, W.Kretlow, M.Herald, D.Gault, D.Bath, K. L.Bode, H. J.Bredner, E.Guhl, K.Haymes, T. V.Hummel, E.Kattentidt, B.Klös, O.Pratt, A.Thome, B.Avdellidou, C.Gazeas, K.Karampotsiou, E.Tzouganatos, L.Kardasis, E.Christou, A. A.Xilouris, E. M.Alikakos, I.Gourzelas, A.Liakos, A.Charmandaris, V.Jelínek, M.Štrobl, J.Eberle, A.Rapp, K.Gährken, B.Klemt, B.Kowollik, S.Bitzer, R.Miller, M.Herzogenrath, G.Frangenberg, D.Brandis, L.Pütz, I.Perdelwitz, V.Piehler, G. M.Riepe, P.Von Poschinger, K.Baruffetti, P.Cenadelli, D.Christille, J. M.Ciabattari, F.Di Luca, R.Alboresi, D.Leto, G.Zanmar Sanchez, R.Bruno, P.Occhipinti, G.Morrone, L.Cupolino, L.Noschese, A.Vecchione, A.Scalia, C.Lo Savio, R.Giardina, G.Kamoun, S.Barbosa, R.Behrend, R.Spano, M.Bouchet, E.Cottier, M.Falco, L.Gallego, S.Tortorelli, L.Sposetti, S.Sussenbach, J.Van Den Abbeel, F.André, P.Llibre, M.Pailler, F.Ardissone, J.Boutet, M.Sanchez, J.Bretton, M.Cailleau, A.Pic, V.Granier, L.Chauvet, R.Conjat, M.Dauvergne, J. L.Dechambre, O.Delay, P.Delcroix, M.Rousselot, L.Ferreira, J.MacHado, P.Tanga, P.Rivet, J. P.Frappa, E.Irzyk, M.Jabet, F.Kaschinski, M.Klotz, A.Rieugnie, Y.Klotz, A. N.Labrevoir, O.Lavandier, D.Walliang, D.Leroy, A.Bouley, S.Lisciandra, S.Coliac, J. F.Metz, F.Erpelding, D.Nougayrède, P.Midavaine, T.Miniou, M.Moindrot, S.Morel, P.Reginato, B.Reginato, E.Rudelle, J.Tregon, B.Tanguy, R.David, J.Thuillot, W.Hestroffer, D.Vaudescal, G.Baba Aissa, D.Grigahcene, Z.Briggs, D.Broadbent, S.Denyer, P.Haigh, N. J.Quinn, N.Thurston, G.Fossey, S. J.Arena, C.Jennings, M.Talbot, J.Alonso, S.Román Reche, A.Casanova, V.Briggs, E.Iglesias-Marzoa, R.Abril Ibáñez, J.Díaz Martín, M. C.González, H.Maestre García, J. L.Marchant, J.Ordonez-Etxeberria, I.Martorell, P.Salamero, J.Organero, F.Ana, L.Fonseca, F.Peris, V.Brevia, O.Selva, A.Perello, C.Cabedo, V.Gonçalves, R.Ferreira, M.Marques Dias, F.Daassou, A.Barkaoui, K.Benkhaldoun, Z.Guennoun, M.Chouqar, J.Jehin, E.Rinner, C.Lloyd, J.El Moutamid, M.Lamarche, C.Pollock, J. T.Caton, D. B.Kouprianov, V.Timerson, B. W.Blanchard, G.Payet, B.Peyrot, A.Teng-Chuen-Yu, J. P.Françoise, J.Mondon, B.Payet, T.Boissel, C.Castets, M.Hubbard, W. B.Hill, R.Reitsema, H. J.Mousis, O.Ball, L.Neilsen, G.Hutcheon, S.Lay, K.Anderson, P.Moy, M.Jonsen, M.Pink, I.Walters, R.Downs, B.2023-03-01T19:53:33Z2023-03-01T19:53:33Z2022-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1051/0004-6361/202141443Astronomy and Astrophysics, v. 659.1432-07460004-6361http://hdl.handle.net/11449/23992710.1051/0004-6361/2021414432-s2.0-85128706474Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAstronomy and Astrophysicsinfo:eu-repo/semantics/openAccess2023-03-01T19:53:44Zoai:repositorio.unesp.br:11449/239927Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-03-01T19:53:44Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
title |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
spellingShingle |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations Oliveira, J. Marques Methods: data analysis Methods: observational Planets and satellites: atmospheres Planets and satellites: physical evolution Techniques: photometric |
title_short |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
title_full |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
title_fullStr |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
title_full_unstemmed |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
title_sort |
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations |
author |
Oliveira, J. Marques |
author_facet |
Oliveira, J. Marques Sicardy, B. Gomes-Júnior, A. R. [UNESP] Ortiz, J. L. Strobel, D. F. Bertrand, T. Forget, F. Lellouch, E. Desmars, J. Bérard, D. Doressoundiram, A. Lecacheux, J. Leiva, R. Meza, E. Roques, F. Souami, D. Widemann, T. Santos-Sanz, P. Morales, N. Duffard, R. Fernández-Valenzuela, E. Castro-Tirado, A. J. Braga-Ribas, F. Morgado, B. E. Assafin, M. Camargo, J. I.B. Vieira-Martins, R. Benedetti-Rossi, G. [UNESP] Santos-Filho, S. Banda-Huarca, M. V. Quispe-Huaynasi, F. Pereira, C. L. Rommel, F. L. Margoti, G. Dias-Oliveira, A. Colas, F. Berthier, J. Renner, S. Hueso, R. Pérez-Hoyos, S. Sánchez-Lavega, A. Rojas, J. F. Beisker, W. Kretlow, M. Herald, D. Gault, D. Bath, K. L. Bode, H. J. Bredner, E. Guhl, K. Haymes, T. V. Hummel, E. Kattentidt, B. Klös, O. Pratt, A. Thome, B. Avdellidou, C. Gazeas, K. Karampotsiou, E. Tzouganatos, L. Kardasis, E. Christou, A. A. Xilouris, E. M. Alikakos, I. Gourzelas, A. Liakos, A. Charmandaris, V. Jelínek, M. Štrobl, J. Eberle, A. Rapp, K. Gährken, B. Klemt, B. Kowollik, S. Bitzer, R. Miller, M. Herzogenrath, G. Frangenberg, D. Brandis, L. Pütz, I. Perdelwitz, V. Piehler, G. M. Riepe, P. Von Poschinger, K. Baruffetti, P. Cenadelli, D. Christille, J. M. Ciabattari, F. Di Luca, R. Alboresi, D. Leto, G. Zanmar Sanchez, R. Bruno, P. Occhipinti, G. Morrone, L. Cupolino, L. Noschese, A. Vecchione, A. Scalia, C. Lo Savio, R. Giardina, G. Kamoun, S. Barbosa, R. Behrend, R. Spano, M. Bouchet, E. Cottier, M. Falco, L. Gallego, S. Tortorelli, L. Sposetti, S. Sussenbach, J. Van Den Abbeel, F. André, P. Llibre, M. Pailler, F. Ardissone, J. Boutet, M. Sanchez, J. Bretton, M. Cailleau, A. Pic, V. Granier, L. Chauvet, R. Conjat, M. Dauvergne, J. L. Dechambre, O. Delay, P. Delcroix, M. Rousselot, L. Ferreira, J. MacHado, P. Tanga, P. Rivet, J. P. Frappa, E. Irzyk, M. Jabet, F. Kaschinski, M. Klotz, A. Rieugnie, Y. Klotz, A. N. Labrevoir, O. Lavandier, D. Walliang, D. Leroy, A. Bouley, S. Lisciandra, S. Coliac, J. F. Metz, F. Erpelding, D. Nougayrède, P. Midavaine, T. Miniou, M. Moindrot, S. Morel, P. Reginato, B. Reginato, E. Rudelle, J. Tregon, B. Tanguy, R. David, J. Thuillot, W. Hestroffer, D. Vaudescal, G. Baba Aissa, D. Grigahcene, Z. Briggs, D. Broadbent, S. Denyer, P. Haigh, N. J. Quinn, N. Thurston, G. Fossey, S. J. Arena, C. Jennings, M. Talbot, J. Alonso, S. Román Reche, A. Casanova, V. Briggs, E. Iglesias-Marzoa, R. Abril Ibáñez, J. Díaz Martín, M. C. González, H. Maestre García, J. L. Marchant, J. Ordonez-Etxeberria, I. Martorell, P. Salamero, J. Organero, F. Ana, L. Fonseca, F. Peris, V. Brevia, O. Selva, A. Perello, C. Cabedo, V. Gonçalves, R. Ferreira, M. Marques Dias, F. Daassou, A. Barkaoui, K. Benkhaldoun, Z. Guennoun, M. Chouqar, J. Jehin, E. Rinner, C. Lloyd, J. El Moutamid, M. Lamarche, C. Pollock, J. T. Caton, D. B. Kouprianov, V. Timerson, B. W. Blanchard, G. Payet, B. Peyrot, A. Teng-Chuen-Yu, J. P. Françoise, J. Mondon, B. Payet, T. Boissel, C. Castets, M. Hubbard, W. B. Hill, R. Reitsema, H. J. Mousis, O. Ball, L. Neilsen, G. Hutcheon, S. Lay, K. Anderson, P. Moy, M. Jonsen, M. Pink, I. Walters, R. Downs, B. |
author_role |
author |
author2 |
Sicardy, B. Gomes-Júnior, A. R. [UNESP] Ortiz, J. L. Strobel, D. F. Bertrand, T. Forget, F. Lellouch, E. Desmars, J. Bérard, D. Doressoundiram, A. Lecacheux, J. Leiva, R. Meza, E. Roques, F. Souami, D. Widemann, T. Santos-Sanz, P. Morales, N. Duffard, R. Fernández-Valenzuela, E. Castro-Tirado, A. J. Braga-Ribas, F. Morgado, B. E. Assafin, M. Camargo, J. I.B. Vieira-Martins, R. Benedetti-Rossi, G. [UNESP] Santos-Filho, S. Banda-Huarca, M. V. Quispe-Huaynasi, F. Pereira, C. L. Rommel, F. L. Margoti, G. Dias-Oliveira, A. Colas, F. Berthier, J. Renner, S. Hueso, R. Pérez-Hoyos, S. Sánchez-Lavega, A. Rojas, J. F. Beisker, W. Kretlow, M. Herald, D. Gault, D. Bath, K. L. Bode, H. J. Bredner, E. Guhl, K. Haymes, T. V. Hummel, E. Kattentidt, B. Klös, O. Pratt, A. Thome, B. Avdellidou, C. Gazeas, K. Karampotsiou, E. Tzouganatos, L. Kardasis, E. Christou, A. A. Xilouris, E. M. Alikakos, I. Gourzelas, A. Liakos, A. Charmandaris, V. Jelínek, M. Štrobl, J. Eberle, A. Rapp, K. Gährken, B. Klemt, B. Kowollik, S. Bitzer, R. Miller, M. Herzogenrath, G. Frangenberg, D. Brandis, L. Pütz, I. Perdelwitz, V. Piehler, G. M. Riepe, P. Von Poschinger, K. Baruffetti, P. Cenadelli, D. Christille, J. M. Ciabattari, F. Di Luca, R. Alboresi, D. Leto, G. Zanmar Sanchez, R. Bruno, P. Occhipinti, G. Morrone, L. Cupolino, L. Noschese, A. Vecchione, A. Scalia, C. Lo Savio, R. Giardina, G. Kamoun, S. Barbosa, R. Behrend, R. Spano, M. Bouchet, E. Cottier, M. Falco, L. Gallego, S. Tortorelli, L. Sposetti, S. Sussenbach, J. Van Den Abbeel, F. André, P. Llibre, M. Pailler, F. Ardissone, J. Boutet, M. Sanchez, J. Bretton, M. Cailleau, A. Pic, V. Granier, L. Chauvet, R. Conjat, M. Dauvergne, J. L. Dechambre, O. Delay, P. Delcroix, M. Rousselot, L. Ferreira, J. MacHado, P. Tanga, P. Rivet, J. P. Frappa, E. Irzyk, M. Jabet, F. Kaschinski, M. Klotz, A. Rieugnie, Y. Klotz, A. N. Labrevoir, O. Lavandier, D. Walliang, D. Leroy, A. Bouley, S. Lisciandra, S. Coliac, J. F. Metz, F. Erpelding, D. Nougayrède, P. Midavaine, T. Miniou, M. Moindrot, S. Morel, P. Reginato, B. Reginato, E. Rudelle, J. Tregon, B. Tanguy, R. David, J. Thuillot, W. Hestroffer, D. Vaudescal, G. Baba Aissa, D. Grigahcene, Z. Briggs, D. Broadbent, S. Denyer, P. Haigh, N. J. Quinn, N. Thurston, G. Fossey, S. J. Arena, C. Jennings, M. Talbot, J. Alonso, S. Román Reche, A. Casanova, V. Briggs, E. Iglesias-Marzoa, R. Abril Ibáñez, J. Díaz Martín, M. C. González, H. Maestre García, J. L. Marchant, J. Ordonez-Etxeberria, I. Martorell, P. Salamero, J. Organero, F. Ana, L. Fonseca, F. Peris, V. Brevia, O. Selva, A. Perello, C. Cabedo, V. Gonçalves, R. Ferreira, M. Marques Dias, F. Daassou, A. Barkaoui, K. Benkhaldoun, Z. Guennoun, M. Chouqar, J. Jehin, E. Rinner, C. Lloyd, J. El Moutamid, M. Lamarche, C. Pollock, J. T. Caton, D. B. Kouprianov, V. Timerson, B. W. Blanchard, G. Payet, B. Peyrot, A. Teng-Chuen-Yu, J. P. Françoise, J. Mondon, B. Payet, T. Boissel, C. Castets, M. Hubbard, W. B. Hill, R. Reitsema, H. J. Mousis, O. Ball, L. Neilsen, G. Hutcheon, S. Lay, K. Anderson, P. Moy, M. Jonsen, M. Pink, I. Walters, R. Downs, B. |
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 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 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 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 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 author author author author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Sorbonne Université Universidade Estadual Paulista (UNESP) Laboratório Interinstitucional de E-Astronomia - LIneA Instituto de Astrofísica de Andalucía (IAA-CSIC) Johns Hopkins University Space Science Division Institut Polytechnique des Sciences Avancées IPSA Univ. Lille Laboratoire Lagrange Universidad de Chile Comisión Nacional de Investigatión y Desarrollo Aeroespacial Del Perú - CONIDA Observatorio Astronómico de Moquegua University of Namur University of Central Florida Federal University of Technology-Paraná (UTFPR / DAFIS) Observatório Nacional/MCTIC Universidade Federal do Rio de Janeiro (UFRJ) Polo Educacional Sesc Observatoire de Lille Universidad Del País Vasco (UPV/EHU) Internationale Amateursternwarte (IAS) E. V. International Occultation Timing Association - European Section (IOTA/ES) Trans-Tasman Occultation Alliance (TTOA) International Occultation Timing Association (IOTA) Vereinigung der Sternfreunde E.V. (VdS) Thierry Midavaine Dutch Occultation Association/Dutch Observers of Asteroids (DOA) Archenhold Sternwarte British Astronomical Association ESTEC SCI-S National and Kapodistrian University of Athens Hellenic Amateur Astronomy Association Armagh Observatory and Planetarium National Observatory of Athens University of Crete Foundation for Research and Technology-Hellas Astronomical Institute of the Czech Academy of Sciences Sternwarte Stuttgart Astronomische Arbeitsgemeinschaft Wanne-Eickel / Herne E.V. Observatory: Sternwarte Zollern-Alb AVV (Astronomische Vereinigung Vulkaneifel) Astronomical Society Volcano Eifel Ariel University Hamburger Sternwarte Selztal Observatory Bochumer Herbsttagung der Amateuratsronomen (BoHeTa) Hammerichstraße e 5 EURASTER (AO) Mount Agliale Observatory AAB - Associazione Astrofili Bolognesi INAF - Osservatorio Astrofisico di Catania Associazione Astrofili Aurunca Astrocampania Associazione - Osservatorio Salvatore di Giacomo - Agerola (NA Gruppo Astrofili Catanesi Sezione Astrofisica Astronomical Society of Tunisia Société Astronomique de Genève Observatoire de Genève Observatoire de la Vallée de Joux Observatoire François-Xavier Bagnoud Société Neuchâteloise d'Astronomie ETH Zurich Observatoire Centre-Ardenne Belesta Observatory (A05: MPC Code) Observatoire les Pléiades Observatoire des Baronnies Provençales Association Photographie Astronomie Montredonnaise (APAM) Observatoire de la Côte d'Azur (OCA) Ciel et Espace Albireo78 Association Sadr Association Société Astronomique de France Tapada da Ajuda Euraster Airylab Observatoire des Côtes-de-Meuse IRAP Observatoire de Saint-Caprais Toulouse University FSI Centre d'Astronomie 93 Société Lorraine d'Astronomie Gretz Armainvilliers Université Paris-Saclay Association Marseillaise d'Astronomie (AMAS) O.A.B.A.C. - Observatoire Astronomique du Beausset André Coliac Observatoire de Puimichel Observatoire Charles Fehrenbach Astro Club de France Inria Université Paris-Sud SAS les Pleiades (Opticiens) LOMA CNRS-Université de Bordeaux UMR5798 Vendéen Astronomical Center Association Dinastro Algiers Observatory Hampshire Astronomical Group Royal Astronomical Society American Association of Variable Star Observers University College London Reading Astronomical Society University of Granada Sociedad Astronómica de Granada Puckett Observatory Centro de Estudios de Física Del Cosmos de Aragón Universidad de la Laguna Observatorio de Forcarei Observatorio Astronómico de Albox - C Liverpool John Moores University Observatorio Astronómico de Guirguillano Observatorio Astronómico la Hita Universidad de Valencia Occultation's Group UMR AIM S/n CI2 e U.D. Matemática e Física Centro Ciência Viva de Constância Centro Ciência Viva Do Algarve Cadi Ayyad University Université de Liège Cadi Ayad University Cornell University University of Toledo Appalachian State University University of North Carolina Russian Academy of Sciences Observatoire des Makes Association Réunionnaise Pour l'Etude du Ciel Austral (ARECA) Planétarium de Vaulx-en-Velin Observatoire du Pic du Midi University of Arizona Reitsema Enterprises Inc LAM Astronomical Association of Queensland Bundaberg Astronomical Society Inc. Brisbane Astronomical Society |
dc.contributor.author.fl_str_mv |
Oliveira, J. Marques Sicardy, B. Gomes-Júnior, A. R. [UNESP] Ortiz, J. L. Strobel, D. F. Bertrand, T. Forget, F. Lellouch, E. Desmars, J. Bérard, D. Doressoundiram, A. Lecacheux, J. Leiva, R. Meza, E. Roques, F. Souami, D. Widemann, T. Santos-Sanz, P. Morales, N. Duffard, R. Fernández-Valenzuela, E. Castro-Tirado, A. J. Braga-Ribas, F. Morgado, B. E. Assafin, M. Camargo, J. I.B. Vieira-Martins, R. Benedetti-Rossi, G. [UNESP] Santos-Filho, S. Banda-Huarca, M. V. Quispe-Huaynasi, F. Pereira, C. L. Rommel, F. L. Margoti, G. Dias-Oliveira, A. Colas, F. Berthier, J. Renner, S. Hueso, R. Pérez-Hoyos, S. Sánchez-Lavega, A. Rojas, J. F. Beisker, W. Kretlow, M. Herald, D. Gault, D. Bath, K. L. Bode, H. J. Bredner, E. Guhl, K. Haymes, T. V. Hummel, E. Kattentidt, B. Klös, O. Pratt, A. Thome, B. Avdellidou, C. Gazeas, K. Karampotsiou, E. Tzouganatos, L. Kardasis, E. Christou, A. A. Xilouris, E. M. Alikakos, I. Gourzelas, A. Liakos, A. Charmandaris, V. Jelínek, M. Štrobl, J. Eberle, A. Rapp, K. Gährken, B. Klemt, B. Kowollik, S. Bitzer, R. Miller, M. Herzogenrath, G. Frangenberg, D. Brandis, L. Pütz, I. Perdelwitz, V. Piehler, G. M. Riepe, P. Von Poschinger, K. Baruffetti, P. Cenadelli, D. Christille, J. M. Ciabattari, F. Di Luca, R. Alboresi, D. Leto, G. Zanmar Sanchez, R. Bruno, P. Occhipinti, G. Morrone, L. Cupolino, L. Noschese, A. Vecchione, A. Scalia, C. Lo Savio, R. Giardina, G. Kamoun, S. Barbosa, R. Behrend, R. Spano, M. Bouchet, E. Cottier, M. Falco, L. Gallego, S. Tortorelli, L. Sposetti, S. Sussenbach, J. Van Den Abbeel, F. André, P. Llibre, M. Pailler, F. Ardissone, J. Boutet, M. Sanchez, J. Bretton, M. Cailleau, A. Pic, V. Granier, L. Chauvet, R. Conjat, M. Dauvergne, J. L. Dechambre, O. Delay, P. Delcroix, M. Rousselot, L. Ferreira, J. MacHado, P. Tanga, P. Rivet, J. P. Frappa, E. Irzyk, M. Jabet, F. Kaschinski, M. Klotz, A. Rieugnie, Y. Klotz, A. N. Labrevoir, O. Lavandier, D. Walliang, D. Leroy, A. Bouley, S. Lisciandra, S. Coliac, J. F. Metz, F. Erpelding, D. Nougayrède, P. Midavaine, T. Miniou, M. Moindrot, S. Morel, P. Reginato, B. Reginato, E. Rudelle, J. Tregon, B. Tanguy, R. David, J. Thuillot, W. Hestroffer, D. Vaudescal, G. Baba Aissa, D. Grigahcene, Z. Briggs, D. Broadbent, S. Denyer, P. Haigh, N. J. Quinn, N. Thurston, G. Fossey, S. J. Arena, C. Jennings, M. Talbot, J. Alonso, S. Román Reche, A. Casanova, V. Briggs, E. Iglesias-Marzoa, R. Abril Ibáñez, J. Díaz Martín, M. C. González, H. Maestre García, J. L. Marchant, J. Ordonez-Etxeberria, I. Martorell, P. Salamero, J. Organero, F. Ana, L. Fonseca, F. Peris, V. Brevia, O. Selva, A. Perello, C. Cabedo, V. Gonçalves, R. Ferreira, M. Marques Dias, F. Daassou, A. Barkaoui, K. Benkhaldoun, Z. Guennoun, M. Chouqar, J. Jehin, E. Rinner, C. Lloyd, J. El Moutamid, M. Lamarche, C. Pollock, J. T. Caton, D. B. Kouprianov, V. Timerson, B. W. Blanchard, G. Payet, B. Peyrot, A. Teng-Chuen-Yu, J. P. Françoise, J. Mondon, B. Payet, T. Boissel, C. Castets, M. Hubbard, W. B. Hill, R. Reitsema, H. J. Mousis, O. Ball, L. Neilsen, G. Hutcheon, S. Lay, K. Anderson, P. Moy, M. Jonsen, M. Pink, I. Walters, R. Downs, B. |
dc.subject.por.fl_str_mv |
Methods: data analysis Methods: observational Planets and satellites: atmospheres Planets and satellites: physical evolution Techniques: photometric |
topic |
Methods: data analysis Methods: observational Planets and satellites: atmospheres Planets and satellites: physical evolution Techniques: photometric |
description |
Context. A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves from this event, 42 of which yielded a central flash detection. Aims. We aimed at constraining Triton's atmospheric structure and the seasonal variations of its atmospheric pressure since the Voyager 2 epoch (1989). We also derived the shape of the lower atmosphere from central flash analysis. Methods. We used Abel inversions and direct ray-tracing code to provide the density, pressure, and temperature profiles in the altitude range ∼8 km to ∼190 km, corresponding to pressure levels from 9 μbar down to a few nanobars. Results. (i) A pressure of 1.18 ± 0.03 μbar is found at a reference radius of 1400 km (47 km altitude). (ii) A new analysis of the Voyager 2 radio science occultation shows that this is consistent with an extrapolation of pressure down to the surface pressure obtained in 1989. (iii) A survey of occultations obtained between 1989 and 2017 suggests that an enhancement in surface pressure as reported during the 1990s might be real, but debatable, due to very few high S/N light curves and data accessible for reanalysis. The volatile transport model analysed supports a moderate increase in surface pressure, with a maximum value around 2005-2015 no higher than 23 μbar. The pressures observed in 1995-1997 and 2017 appear mutually inconsistent with the volatile transport model presented here. (iv) The central flash structure does not show evidence of an atmospheric distortion. We find an upper limit of 0.0011 for the apparent oblateness of the atmosphere near the 8 km altitude. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-03-01 2023-03-01T19:53:33Z 2023-03-01T19:53:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1051/0004-6361/202141443 Astronomy and Astrophysics, v. 659. 1432-0746 0004-6361 http://hdl.handle.net/11449/239927 10.1051/0004-6361/202141443 2-s2.0-85128706474 |
url |
http://dx.doi.org/10.1051/0004-6361/202141443 http://hdl.handle.net/11449/239927 |
identifier_str_mv |
Astronomy and Astrophysics, v. 659. 1432-0746 0004-6361 10.1051/0004-6361/202141443 2-s2.0-85128706474 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Astronomy and Astrophysics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965114991902720 |