A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS
Autor(a) principal: | |
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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/10.1051/0004-6361/202244221 http://hdl.handle.net/11449/237676 |
Resumo: | Context. Stellar occultation is a powerful technique that allows the determination of some physical parameters of the occulting object. The result depends on the photometric accuracy, the temporal resolution, and the number of chords obtained. Space telescopes can achieve high photometric accuracy as they are not affected by atmospheric scintillation. Aims. Using ESA's CHEOPS space telescope, we observed a stellar occultation by the transneptunian object (50000) Quaoar. We compare the obtained chord with previous occultations by this object and determine its astrometry with sub-milliarcsecond precision. Also, we determine upper limits to the presence of a global methane atmosphere on the occulting body. Methods. We predicted and observed a stellar occultation by Quaoar using the CHEOPS space telescope. We measured the occultation light curve from this dataset and determined the dis- and reappearance of the star behind the occulting body. Furthermore, a ground-based telescope in Australia was used to constrain Quaoar's limb. Combined with results from previous works, these measurements allowed us to obtain a precise position of Quaoar at the occultation time. Results. We present the results obtained from the first stellar occultation by a transneptunian object using a space telescope orbiting Earth; it was the occultation by Quaoar observed on 2020 June 11. We used the CHEOPS light curve to obtain a surface pressure upper limit of 85 nbar for the detection of a global methane atmosphere. Also, combining this observation with a ground-based observation, we fitted Quaoar's limb to determine its astrometric position with an uncertainty below 1.0 mas. Conclusions. This observation is the first of its kind, and it shall be considered as a proof of concept of stellar occultation observations of transneptunian objects with space telescopes orbiting Earth. Moreover, it shows significant prospects for the James Webb Space Telescope. |
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Repositório Institucional da UNESP |
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2946 |
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A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPSMethods: observationalTechniques: photometricOccultationsMinor planets, asteroids: individual: QuaoarContext. Stellar occultation is a powerful technique that allows the determination of some physical parameters of the occulting object. The result depends on the photometric accuracy, the temporal resolution, and the number of chords obtained. Space telescopes can achieve high photometric accuracy as they are not affected by atmospheric scintillation. Aims. Using ESA's CHEOPS space telescope, we observed a stellar occultation by the transneptunian object (50000) Quaoar. We compare the obtained chord with previous occultations by this object and determine its astrometry with sub-milliarcsecond precision. Also, we determine upper limits to the presence of a global methane atmosphere on the occulting body. Methods. We predicted and observed a stellar occultation by Quaoar using the CHEOPS space telescope. We measured the occultation light curve from this dataset and determined the dis- and reappearance of the star behind the occulting body. Furthermore, a ground-based telescope in Australia was used to constrain Quaoar's limb. Combined with results from previous works, these measurements allowed us to obtain a precise position of Quaoar at the occultation time. Results. We present the results obtained from the first stellar occultation by a transneptunian object using a space telescope orbiting Earth; it was the occultation by Quaoar observed on 2020 June 11. We used the CHEOPS light curve to obtain a surface pressure upper limit of 85 nbar for the detection of a global methane atmosphere. Also, combining this observation with a ground-based observation, we fitted Quaoar's limb to determine its astrometric position with an uncertainty below 1.0 mas. Conclusions. This observation is the first of its kind, and it shall be considered as a proof of concept of stellar occultation observations of transneptunian objects with space telescopes orbiting Earth. Moreover, it shows significant prospects for the James Webb Space Telescope.European Research Council under the European Community's H2020 (ERC)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)CHEOPS ASI-INAFSNSASTFCUKSASwiss National FundSpanish Ministry of Science and InnovationEuropean Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC)Generalitat de Catalunya/CERCA programmeESAFCTCNESBelgian Federal Science Policy Office (BELSPO)University of Liege through an ARC grant for Concerted Research Actions - Wallonia-Brussels FederationFCT -Fundacao para a Ciencia e a TecnologiaFEDER through COMPETE2020-Programa Operacional Competitividade e InternacionalizacaoSpanish grant LEO-SBNAF (MCIU/AEI/FEDER, UE)State Agency for Research of the Spanish MCIU through the Center of Excellence Severo Ochoa award for the Instituto de Astrofisica de AndaluciaProyectos de Excelencia de la Junta de AndaluciaSwiss National Science FoundationEuropean Research Council (ERC) under the European Union's Horizon 2020 research and innovation programmeSwiss National Science Foundation (SNSF)Swedish National Space AgencyCRT foundationRegion Ile de Franceproject Equip at Meso of the programme Investissements d'AvenirSimons FoundationEuropean Regional Development FundPOPH/FSEHungarian National Research, Development and Innovation Office (NKFIH)PRODEX Experiment AgreementHungarian Academy of Sciencecity of SzombathelyUniv Fed Rio de Janeiro, Observ Valongo, Ladeira Pedro Antonio 43, BR-20080090 Rio De Janeiro, BrazilObserv Nacl MCTI, R Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, BrazilLab Interinst E Astron LIneA, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, BrazilOsserv Astrofis Catania, INAF, Via S Sofia 78, I-95123 Catania, ItalyUniv Fed Uberlandia, Inst Phys, Uberlandia, MG, BrazilUNESP Sao Paulo State Univ, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP, BrazilUniv Paris, LESIA, Observ Paris, Univ PSL,Sorbonne Univ,CNRS, F-92190 Meudon, FranceUniv Bern, Phys Inst, Sidlerstr 5, CH-3012 Bern, SwitzerlandUniv Bern, Ctr Space & Habitabil, Gesell Str 6, CH-3012 Bern, SwitzerlandInst Polytech Sci Avancees IPSA, 63 Blvd Brandebourg, F-94200 Ivry, FranceUniv Lille, Inst Mecan Celeste & Calcul Ephemerides, IMCCE,UPMC Univ Paris 06, Observ Paris,PSL Res Univ,CNRS,Sorbonne Univ, 77 Av Denfert Rochereau, F-75014 Paris, FranceKeele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, EnglandFed Univ Technol Parana UTFPR DAFIS, Rua Sete Setembro 3165, BR-80230901 Curitiba, Parana, BrazilSwiss Fed Inst Technol, Dept Phys, Wolfgang Pauli Str 2, CH-8093 Zurich, SwitzerlandCavendish Lab, JJ Thomson Ave, Cambridge CB3 OHE, EnglandUniv Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, PortugalIAA CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, Granada 18008, SpainStockholm Univ, Alballova Univ Ctr, Dept Astron, S-10691 Stockholm, SwedenUniv St Andrews, SUPA Sch Phys & Astron, Ctr Exoplanet Sci, St Andrews KY16 9SS, Fife, ScotlandUniv Geneva, Observ Astron, Chemin Pegasi 51, Versoix, SwitzerlandLab Lagrange UMR7293 CNRS, Observ Cote dAzur, Nice, FranceUniv Namur, NaXys, 8 Rempart de la Vierge, B-5000 Namur, BelgiumEuropean Space Res & Technol Ctr ESTEC, European Space Agcy ESA, Directorate Sci, Sci & Operat Dept,Sci Div SCI SC, Keplerlaan 1, NL-2201 Noordwijk, NetherlandsReedy Creek Observ, Gold Coast, Qld, AustraliaTrans Tasman Occultat Alliance TTOA, POB 3181, Wellington, New ZealandInst Astrofis Canarias, Tenerife 38200, SpainUniv La Laguna, Dept Astrofis, Tenerife 38206, SpainCSIC, Inst Ciencies Espai ICE, Campus UAB,Can Magrans S-N, Bellaterra 08193, SpainInst Estudis Espacials Catalunya IEEC, Barcelona 08034, SpainAdmatis, 5 Kando Kalman St, H-3534 Miskolc, HungaryCtr Astrobiol CSIC INTA, Dept Astrofis, ESAC Campus, Madrid 28692, SpainUniv Porto, Fac Ciencias, Dept Fis & Astron, Rua Campo Alegre, P-4169007 Porto, PortugalAustrian Acad Sci, Space Res Inst, Schmiedlstr 6, A-8042 Graz, AustriaUniv Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, FranceGerman Aerosp Ctr DLR, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, GermanyUniv Paris, Inst Phys Globe Paris, CNRS, F-75005 Paris, FranceLund Univ, Ctr Math Sci, Box 118, S-22100 Lund, SwedenAix Marseille Univ, LAM, CNES, CNRS, 38 Rue Frederic Joliot Curie, F-13388 Marseille, FranceUniv Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, BelgiumUniv Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee 6 Aout 19C, B-4000 Liege, BelgiumLeiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, NetherlandsChalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, S-43992 Onsala, SwedenUniv Torino, Dipartimento Fis, Via Pietro Giuria 1, I-10125 Turin, ItalyUniv Vienna, Dept Astrophys, Turkenschanzstr 17, A-1180 Vienna, AustriaUniv Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, EnglandRes Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, HungaryEotvos Lorand Univ, Inst Phys, Pazmany Peter Setany 1-A, H-1117 Budapest, HungarySorbonne Univ, PSL Univ, Observ Paris, IMCCE,UMR8028 CNRS, 77 Av Denfert Rochereau, F-75014 Paris, FranceUniv Paris 06, Inst Astrophys Paris, UMR7095 CNRS, 98Bis Blvd Arago, F-75014 Paris, FranceOsserv Astron Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, ItalyUniv Vienna, Dept Astrophys, Tuerkenschanzstr 17, A-1180 Vienna, AustriaGerman Aerosp Ctr DLR, Inst Opt Sensor Syst, Rutherfordstr 2, D-12489 Berlin, GermanyUniv Padua, Dipartimento Fis & Astron Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, ItalyEuropean Space Agcy, Estec, NL-2201 AZ Noordwijk, NetherlandsTech Univ Berlin, Zentrum Astron & Astrophys, Hardenbergstr 36, D-10623 Berlin, GermanyFree Univ Berlin, Inst Geol Wissensch, D-12249 Berlin, GermanyEotvos Lorand Univ, Gothard Astrophys Observ, Szent Imre H U 112, H-9700 Szombathely, HungaryMTA ELTE Exoplanet Res Grp, Szent Imre H U 112, H-9700 Szombathely, HungaryUniv Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, EnglandUNESP Sao Paulo State Univ, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP, BrazilEuropean Research Council under the European Community's H2020 (ERC): 669416CNPq: 465376/2014-2CNPq: BEM 150612/2020-6CNPq: FB-R 314772/2020-0CAPES: BEM 394/2016-05FAPESP: ARGJr 2018/11239-8CHEOPS ASI-INAF: 2019-29-HH.0STFC: ST/R000824/1STFC: ST/V000861/1STFC: ST/M001040/1UKSA: ST/R003203/1UKSA: ST/R004838/1Swiss National Fund: 200020_172746European Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC): ESP2016-80435-C2-1-REuropean Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC): ESP2016-80435-C2-2-REuropean Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC): PGC2018-098153-B-C33European Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC): PGC2018-098153-B-C31European Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC): ESP2017-87676-C51-REuropean Regional Development Fund Unidad de Excelencia Maria de Maeztu-Centro de Astrobiologica (INTA-CSIC): MDM-2017-0737ESA: 4000124370FCT: IF/01312/2014/CP1215/CT0004FCT: CEECIND/00826/2018FCT: DL 57/2016/CP1364/CT0004FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: UID/FIS/04434/2019FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: UIDB/04434/2020FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: UIDP/04434/2020FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: PTDC/FIS-AST/32113/2017FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: POCI-01-0145-FEDER-032113FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: PTDC/FIS-AST/28953/2017FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: POCI01-0145-FEDER-028953FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: PTDC/FIS-AST/28987/2017FEDER through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao: POCI-01-0145FEDER-028987Spanish grant LEO-SBNAF (MCIU/AEI/FEDER, UE): AYA-RTI2018-098657J-I00State Agency for Research of the Spanish MCIU through the Center of Excellence Severo Ochoa award for the Instituto de Astrofisica de Andalucia: SEV-2017-0709Proyectos de Excelencia de la Junta de Andalucia: 2012-FQM1776Proyectos de Excelencia de la Junta de Andalucia: PY20-01309Swiss National Science Foundation: PP00P2-190080Swiss National Science Foundation: 200021_200726Swiss National Science Foundation: PCEFP2_194576European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme: 724427Swedish National Space Agency: DNR 65/19Swedish National Space Agency: 174/18CRT foundation: 2018.2323CNES: 837319project Equip at Meso of the programme Investissements d'Avenir: ANR-10-EQPX-29-01Simons Foundation: 327127European Regional Development Fund: PGC2018-098153-B-C33Hungarian National Research, Development and Innovation Office (NKFIH): K-125015PRODEX Experiment Agreement: 4000137122Hungarian Academy of Science: LP2018-7/2021: AYA-2017-84637-R: PID2020112789GB-I00Edp Sciences S AUniversidade Federal do Rio de Janeiro (UFRJ)Observ Nacl MCTILab Interinst E Astron LIneAOsserv Astrofis CataniaUniversidade Federal de Uberlândia (UFU)Universidade Estadual Paulista (UNESP)Univ ParisUniv BernInst Polytech Sci Avancees IPSAUniv LilleKeele UnivFed Univ Technol Parana UTFPR DAFISSwiss Fed Inst TechnolCavendish LabUniv PortoIAA CSICStockholm UnivUniv St AndrewsUniv GenevaLab Lagrange UMR7293 CNRSUniv NamurEuropean Space Res & Technol Ctr ESTECReedy Creek ObservTrans Tasman Occultat Alliance TTOAInst Astrofis CanariasUniv La LagunaCSICInst Estudis Espacials Catalunya IEECAdmatisCtr Astrobiol CSIC INTAAustrian Acad SciUniv Grenoble AlpesGerman Aerosp Ctr DLRLund UnivAix Marseille UnivUniv LiegeLeiden UnivChalmers Univ TechnolUniv TorinoUniv ViennaUniv WarwickRes Ctr Astron & Earth SciEotvos Lorand UnivSorbonne UnivUniv Paris 06Osserv Astron PadovaUniv PaduaEuropean Space AgcyTech Univ BerlinFree Univ BerlinMTA ELTE Exoplanet Res GrpUniv CambridgeMorgado, B. E.Bruno, G.Gomes-Junior, A. R. [UNESP]Pagano, ISicardy, B.Fortier, A.Desmars, J.Maxted, P. F. L.Braga-Ribas, F.Queloz, D.Sousa, S. G.Ortiz, J. L.Brandeker, A.Cameron, A. CollierPereira, C. L.Floren, H. G.Hara, N.Souami, D.Isaak, K. G.Olofsson, G.Santos-Sanz, P.Wilson, T. G.Broughton, J.Alibert, Y.Alonso, R.Anglada, G.Barczy, T.Barrado, D.Barros, S. C. C.Baumjohann, W.Beck, M.Beck, T.Benz, W.Billot, N.Bonfils, X.Broeg, C.Cabrera, J.Charnoz, S.Csizmadia, S.Davies, M. B.Deleuil, M.Delrez, L.Demangeon, O. D. S.Demory, B. O.Ehrenreich, D.Erikson, A.Fossati, L.Fridlund, M.Gandolfi, D.Gillon, M.Gudel, M.Heng, K.Hoyer, S.Kiss, L. L.Laskar, J.des Etangs, A. LecavelierLendl, M.Lovis, C.Magrin, D.Marafatto, L.Nascimbeni, VOttensamer, R.Palle, E.Peter, G.Piazza, D.Piotto, G.Pollacco, D.Ragazzoni, R.Rando, N.Ratti, F.Rauer, H.Reimers, C.Ribas, ISantos, N. C.Scandariato, G.Segransan, D.Simon, A. E.Smith, A. M. S.Steller, M.Szabo, G. M.Thomas, N.Udry, S.Van Grootel, V.Walton, N. A.Westerdorff, K.2022-11-30T13:41:37Z2022-11-30T13:41:37Z2022-08-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article9http://dx.doi.org/10.1051/0004-6361/202244221Astronomy & Astrophysics. Les Ulis Cedex A: Edp Sciences S A, v. 664, 9 p., 2022.0004-6361http://hdl.handle.net/11449/23767610.1051/0004-6361/202244221WOS:000847065300014Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAstronomy & Astrophysicsinfo:eu-repo/semantics/openAccess2022-11-30T13:41:39Zoai:repositorio.unesp.br:11449/237676Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:48:26.011722Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
title |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
spellingShingle |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS Morgado, B. E. Methods: observational Techniques: photometric Occultations Minor planets, asteroids: individual: Quaoar |
title_short |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
title_full |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
title_fullStr |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
title_full_unstemmed |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
title_sort |
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
author |
Morgado, B. E. |
author_facet |
Morgado, B. E. Bruno, G. Gomes-Junior, A. R. [UNESP] Pagano, I Sicardy, B. Fortier, A. Desmars, J. Maxted, P. F. L. Braga-Ribas, F. Queloz, D. Sousa, S. G. Ortiz, J. L. Brandeker, A. Cameron, A. Collier Pereira, C. L. Floren, H. G. Hara, N. Souami, D. Isaak, K. G. Olofsson, G. Santos-Sanz, P. Wilson, T. G. Broughton, J. Alibert, Y. Alonso, R. Anglada, G. Barczy, T. Barrado, D. Barros, S. C. C. Baumjohann, W. Beck, M. Beck, T. Benz, W. Billot, N. Bonfils, X. Broeg, C. Cabrera, J. Charnoz, S. Csizmadia, S. Davies, M. B. Deleuil, M. Delrez, L. Demangeon, O. D. S. Demory, B. O. Ehrenreich, D. Erikson, A. Fossati, L. Fridlund, M. Gandolfi, D. Gillon, M. Gudel, M. Heng, K. Hoyer, S. Kiss, L. L. Laskar, J. des Etangs, A. Lecavelier Lendl, M. Lovis, C. Magrin, D. Marafatto, L. Nascimbeni, V Ottensamer, R. Palle, E. Peter, G. Piazza, D. Piotto, G. Pollacco, D. Ragazzoni, R. Rando, N. Ratti, F. Rauer, H. Reimers, C. Ribas, I Santos, N. C. Scandariato, G. Segransan, D. Simon, A. E. Smith, A. M. S. Steller, M. Szabo, G. M. Thomas, N. Udry, S. Van Grootel, V. Walton, N. A. Westerdorff, K. |
author_role |
author |
author2 |
Bruno, G. Gomes-Junior, A. R. [UNESP] Pagano, I Sicardy, B. Fortier, A. Desmars, J. Maxted, P. F. L. Braga-Ribas, F. Queloz, D. Sousa, S. G. Ortiz, J. L. Brandeker, A. Cameron, A. Collier Pereira, C. L. Floren, H. G. Hara, N. Souami, D. Isaak, K. G. Olofsson, G. Santos-Sanz, P. Wilson, T. G. Broughton, J. Alibert, Y. Alonso, R. Anglada, G. Barczy, T. Barrado, D. Barros, S. C. C. Baumjohann, W. Beck, M. Beck, T. Benz, W. Billot, N. Bonfils, X. Broeg, C. Cabrera, J. Charnoz, S. Csizmadia, S. Davies, M. B. Deleuil, M. Delrez, L. Demangeon, O. D. S. Demory, B. O. Ehrenreich, D. Erikson, A. Fossati, L. Fridlund, M. Gandolfi, D. Gillon, M. Gudel, M. Heng, K. Hoyer, S. Kiss, L. L. Laskar, J. des Etangs, A. Lecavelier Lendl, M. Lovis, C. Magrin, D. Marafatto, L. Nascimbeni, V Ottensamer, R. Palle, E. Peter, G. Piazza, D. Piotto, G. Pollacco, D. Ragazzoni, R. Rando, N. Ratti, F. Rauer, H. Reimers, C. Ribas, I Santos, N. C. Scandariato, G. Segransan, D. Simon, A. E. Smith, A. M. S. Steller, M. Szabo, G. M. Thomas, N. Udry, S. Van Grootel, V. Walton, N. A. Westerdorff, K. |
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 |
dc.contributor.none.fl_str_mv |
Universidade Federal do Rio de Janeiro (UFRJ) Observ Nacl MCTI Lab Interinst E Astron LIneA Osserv Astrofis Catania Universidade Federal de Uberlândia (UFU) Universidade Estadual Paulista (UNESP) Univ Paris Univ Bern Inst Polytech Sci Avancees IPSA Univ Lille Keele Univ Fed Univ Technol Parana UTFPR DAFIS Swiss Fed Inst Technol Cavendish Lab Univ Porto IAA CSIC Stockholm Univ Univ St Andrews Univ Geneva Lab Lagrange UMR7293 CNRS Univ Namur European Space Res & Technol Ctr ESTEC Reedy Creek Observ Trans Tasman Occultat Alliance TTOA Inst Astrofis Canarias Univ La Laguna CSIC Inst Estudis Espacials Catalunya IEEC Admatis Ctr Astrobiol CSIC INTA Austrian Acad Sci Univ Grenoble Alpes German Aerosp Ctr DLR Lund Univ Aix Marseille Univ Univ Liege Leiden Univ Chalmers Univ Technol Univ Torino Univ Vienna Univ Warwick Res Ctr Astron & Earth Sci Eotvos Lorand Univ Sorbonne Univ Univ Paris 06 Osserv Astron Padova Univ Padua European Space Agcy Tech Univ Berlin Free Univ Berlin MTA ELTE Exoplanet Res Grp Univ Cambridge |
dc.contributor.author.fl_str_mv |
Morgado, B. E. Bruno, G. Gomes-Junior, A. R. [UNESP] Pagano, I Sicardy, B. Fortier, A. Desmars, J. Maxted, P. F. L. Braga-Ribas, F. Queloz, D. Sousa, S. G. Ortiz, J. L. Brandeker, A. Cameron, A. Collier Pereira, C. L. Floren, H. G. Hara, N. Souami, D. Isaak, K. G. Olofsson, G. Santos-Sanz, P. Wilson, T. G. Broughton, J. Alibert, Y. Alonso, R. Anglada, G. Barczy, T. Barrado, D. Barros, S. C. C. Baumjohann, W. Beck, M. Beck, T. Benz, W. Billot, N. Bonfils, X. Broeg, C. Cabrera, J. Charnoz, S. Csizmadia, S. Davies, M. B. Deleuil, M. Delrez, L. Demangeon, O. D. S. Demory, B. O. Ehrenreich, D. Erikson, A. Fossati, L. Fridlund, M. Gandolfi, D. Gillon, M. Gudel, M. Heng, K. Hoyer, S. Kiss, L. L. Laskar, J. des Etangs, A. Lecavelier Lendl, M. Lovis, C. Magrin, D. Marafatto, L. Nascimbeni, V Ottensamer, R. Palle, E. Peter, G. Piazza, D. Piotto, G. Pollacco, D. Ragazzoni, R. Rando, N. Ratti, F. Rauer, H. Reimers, C. Ribas, I Santos, N. C. Scandariato, G. Segransan, D. Simon, A. E. Smith, A. M. S. Steller, M. Szabo, G. M. Thomas, N. Udry, S. Van Grootel, V. Walton, N. A. Westerdorff, K. |
dc.subject.por.fl_str_mv |
Methods: observational Techniques: photometric Occultations Minor planets, asteroids: individual: Quaoar |
topic |
Methods: observational Techniques: photometric Occultations Minor planets, asteroids: individual: Quaoar |
description |
Context. Stellar occultation is a powerful technique that allows the determination of some physical parameters of the occulting object. The result depends on the photometric accuracy, the temporal resolution, and the number of chords obtained. Space telescopes can achieve high photometric accuracy as they are not affected by atmospheric scintillation. Aims. Using ESA's CHEOPS space telescope, we observed a stellar occultation by the transneptunian object (50000) Quaoar. We compare the obtained chord with previous occultations by this object and determine its astrometry with sub-milliarcsecond precision. Also, we determine upper limits to the presence of a global methane atmosphere on the occulting body. Methods. We predicted and observed a stellar occultation by Quaoar using the CHEOPS space telescope. We measured the occultation light curve from this dataset and determined the dis- and reappearance of the star behind the occulting body. Furthermore, a ground-based telescope in Australia was used to constrain Quaoar's limb. Combined with results from previous works, these measurements allowed us to obtain a precise position of Quaoar at the occultation time. Results. We present the results obtained from the first stellar occultation by a transneptunian object using a space telescope orbiting Earth; it was the occultation by Quaoar observed on 2020 June 11. We used the CHEOPS light curve to obtain a surface pressure upper limit of 85 nbar for the detection of a global methane atmosphere. Also, combining this observation with a ground-based observation, we fitted Quaoar's limb to determine its astrometric position with an uncertainty below 1.0 mas. Conclusions. This observation is the first of its kind, and it shall be considered as a proof of concept of stellar occultation observations of transneptunian objects with space telescopes orbiting Earth. Moreover, it shows significant prospects for the James Webb Space Telescope. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-30T13:41:37Z 2022-11-30T13:41:37Z 2022-08-29 |
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/10.1051/0004-6361/202244221 Astronomy & Astrophysics. Les Ulis Cedex A: Edp Sciences S A, v. 664, 9 p., 2022. 0004-6361 http://hdl.handle.net/11449/237676 10.1051/0004-6361/202244221 WOS:000847065300014 |
url |
http://dx.doi.org/10.1051/0004-6361/202244221 http://hdl.handle.net/11449/237676 |
identifier_str_mv |
Astronomy & Astrophysics. Les Ulis Cedex A: Edp Sciences S A, v. 664, 9 p., 2022. 0004-6361 10.1051/0004-6361/202244221 WOS:000847065300014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Astronomy & Astrophysics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
9 |
dc.publisher.none.fl_str_mv |
Edp Sciences S A |
publisher.none.fl_str_mv |
Edp Sciences S A |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128982399320064 |