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A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS
Morgado, B. E. and Bruno, G. and Gomes-Junior, A. R. and Pagano, I. and Sicardy, B. and Fortier, A. and Desmars, J. and Maxted, P. F. L. and Braga-Ribas, F. and Queloz, D. and Sousa, S. G. and Ortiz, J. L. and Brandeker, A. and Collier Cameron, A. and Pereira, C. L. and Floren, H. G. and Hara, N. C. and Souami, D. and Isaak, K. G. and Olofsson, G. and Santos-Sanz, P. and Wilson, T. G. and Broughton, J. and Alibert, Y. and Alonso, R. and Anglada Escudé, G. and Bàrczy, T. and Barrado, D. and Barros, S. C. C. and Baumjohann, W. and Beck, M. and Beck, T. and Benz, W. and Billot, N. and Bonfils, X. and Broeg, C. and Cabrera, J. and Charnoz, S. and Csizmadia, S. and Davies, M. B. and Deleuil, M. and Delrez, L. and Demangeon, O. D. S. and Demory, B. -O. and Ehrenreich, D. and Erikson, A. and Fossati, L. and Fridlund, M. and Gandolfi, D. and Gillon, M. and Güdel, M. and Heng, K. and Hoyer, S. and Kiss, L. L. and Laskar, J. and Lecavelier des Etangs, A. and Lendl, M. and Lovis, C. and Magrin, D. and Marafatto, L. and Nascimbeni, V. and Ottensamer, R. and Palle, E. and Peter, G. and Piazza, D. and Piotto, G. and Pollacco, D. and Ragazzoni, R. and Rando, N. and Ratti, F. and Rauer, H. and Reimers, C. and Ribas, I. and Santos, N. C. and Scandariato, G. and Segransan, D. and Simon, A. E. and Smith, A M S and Steller, M. and Szabo, G. M. and Thomas, N. and Udry, S. and Van Grootel, V. and Walton, N. A. and Westerdorff, Karsten
(2022)
A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS.
Astronomy & Astrophysics, 664, L15.
EDP Sciences.
doi: 10.1051/0004-6361/202244221.
ISSN 0004-6361.
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Official URL: https://www.aanda.org/articles/aa/full_html/2022/08/aa44221-22/aa44221-22.html AbstractContext. 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. | Item URL in elib: | https://elib.dlr.de/189090/ |
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| Document Type: | Article |
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| Title: | A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS |
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| Authors: | | Authors | Institution or Email of Authors | Author's ORCID iD | ORCID Put Code |
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| Morgado, B. E. | Universidade Federal do Rio de Janeiro - Observatório do Valongo, Ladeira Pedro Antônio 43, CEP 20.080-090, Rio de Janeiro, Brazil ; Observatório Nacional/MCTI, R. General José Cristino 77, CEP 20921-400, Rio de Janeiro, Brazil; Laboratório Interinstituci | UNSPECIFIED | UNSPECIFIED | | Bruno, G. | INAF, Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123, Catania, Italy | UNSPECIFIED | UNSPECIFIED | | Gomes-Junior, A. R. | UNESP - São Paulo State University, Grupo de Dinâmica Orbital e Planetologia, Guaratinguetá 12516-410, Brazil | UNSPECIFIED | UNSPECIFIED | | Pagano, I. | INAF – Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123 Catania, Italy | UNSPECIFIED | UNSPECIFIED | | Sicardy, B. | LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, France | UNSPECIFIED | UNSPECIFIED | | Fortier, A. | Physikalisches Institut, University of Bern, Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Desmars, J. | Institut Polytechnique des Sciences Avancées IPSA, 63 Boulevard de Brandebourg, 94200, Ivry-sur-Seine, France; Institut de Mécanique Céleste et de Calcul des Éphémérides, IMCCE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, U | UNSPECIFIED | UNSPECIFIED | | Maxted, P. F. L. | Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK | UNSPECIFIED | UNSPECIFIED | | Braga-Ribas, F. | Observatório do Valongo/UFRJ, Ladeira Pedro Antonio 43, 20080-090 Rio de Janeiro, Brazil | UNSPECIFIED | UNSPECIFIED | | Queloz, D. | Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, UK | UNSPECIFIED | UNSPECIFIED | | Sousa, S. G. | Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal | UNSPECIFIED | UNSPECIFIED | | Ortiz, J. L. | Instituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain | UNSPECIFIED | UNSPECIFIED | | Brandeker, A. | Department of Astronomy – Stockholm University, SE-106 91 Stockholm, Sweden | UNSPECIFIED | UNSPECIFIED | | Collier Cameron, A. | SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK | UNSPECIFIED | UNSPECIFIED | | Pereira, C. L. | Observatório Nacional/MCTI, R. General José Cristino 77, CEP 20921-400, Rio de Janeiro, Brazil; Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, 20921-400, Brazil | UNSPECIFIED | UNSPECIFIED | | Floren, H. G. | Department of Astronomy, Stockholm University, AlbaNova University Center, 10691 Stockholm, Sweden | UNSPECIFIED | UNSPECIFIED | | Hara, N. C. | Observatoire Astronomique de l’Université de Genève, CheminPegasi 51, Versoix, Switzerland | UNSPECIFIED | UNSPECIFIED | | Souami, D. | Observatoire de la Côte d'Azur, Laboratoire Lagrange UMR7293 CNRS, Nice, France; LESIA, Observatoire de Paris, Université PSL, Sorbonne Université, Université de Paris, CNRS, 92190, Meudon, France; NaXys, University of Namur, 8 Rempart de la Vierge, Namur | UNSPECIFIED | UNSPECIFIED | | Isaak, K. G. | ESA/ESTEC, Niederlande | UNSPECIFIED | UNSPECIFIED | | Olofsson, G. | Department of Astronomy, Stockholm University, Sweden | UNSPECIFIED | UNSPECIFIED | | Santos-Sanz, P. | Instituto de Astrofísica de Andalucía, IAA-CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain | UNSPECIFIED | UNSPECIFIED | | Wilson, T. G. | School of Physics and Astronomy, St. Andrews, UK | https://orcid.org/0000-0001-8749-1962 | UNSPECIFIED | | Broughton, J. | Reedy Creek Observatory, Gold Coast, Queensland, Australia; Trans-Tasman Occultation Alliance (TTOA), PO Box 3181, Wellington, New Zealand | UNSPECIFIED | UNSPECIFIED | | Alibert, Y. | Physikalisches Institut, University of Bern;Observatoire de Besançon, Institut UTINAM, France | UNSPECIFIED | UNSPECIFIED | | Alonso, R. | Instituto de Astrofisica de Canarias (IAC), Via Lactea s/n 38200, La Laguna, Spain | UNSPECIFIED | UNSPECIFIED | | Anglada Escudé, G. | Institut de Ciències de l’Espai (ICE, CSIC), Campus UAB, CanMagrans s/n, 08193 Bellaterra, Spain; Institut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona,Spain | UNSPECIFIED | UNSPECIFIED | | Bàrczy, T. | Admatis, Miskolc, Hungary | UNSPECIFIED | UNSPECIFIED | | Barrado, D. | Departamento de Astrofisica, Centro de Astrobiologia (INTA-CSIC), Campus ESAC (ESA)Camino Bajo del Castillo s/n 28692 Villanueva de la Canada, Spain | UNSPECIFIED | UNSPECIFIED | | Barros, S. C. C. | Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal | UNSPECIFIED | UNSPECIFIED | | Baumjohann, W. | Space Research Institute, Austrian Academy of Sciences, Graz, Austria | https://orcid.org/0000-0001-6271-0110 | UNSPECIFIED | | Beck, M. | Observatoire de Genève, University of Geneva, Switzerland | UNSPECIFIED | UNSPECIFIED | | Beck, T. | Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Benz, W. | Physikalisches Institut, Universität Bern, CH | UNSPECIFIED | UNSPECIFIED | | Billot, N. | Observatoire de Genève, University of Geneva, Switzerland | UNSPECIFIED | UNSPECIFIED | | Bonfils, X. | Institut de Planétologie et d'Astrophysique, University of Grenoble, France | UNSPECIFIED | UNSPECIFIED | | Broeg, C. | Physikalisches Institut, University of Bern, Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Cabrera, J. | UNSPECIFIED | https://orcid.org/0000-0001-6653-5487 | UNSPECIFIED | | Charnoz, S. | Université de Paris, Institut de physique du globe de Paris, CNRS, 75005, Paris, France | UNSPECIFIED | UNSPECIFIED | | Csizmadia, S. | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | | Davies, M. B. | Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, 22100, Lund, Sweden | UNSPECIFIED | UNSPECIFIED | | Deleuil, M. | Aix Marseille Universite, CNRS, LAM (Laboratoire d Astrophysique de Marseille) UMR 7326, F-13388 Marseille, France | UNSPECIFIED | UNSPECIFIED | | Delrez, L. | Institut d Astrophysique et de Geophysique, Universite de Liege, Allee du 6 Aout, 17, Bat. B5C, Liege 1, Belgium | UNSPECIFIED | UNSPECIFIED | | Demangeon, O. D. S. | Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762, Porto, Portugal | UNSPECIFIED | UNSPECIFIED | | Demory, B. -O. | Center for Space and Habitability, Gesellsschaftstrasse 6, 3012, Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Ehrenreich, D. | Observatoire de Genève, University of Geneva, Switzerland | UNSPECIFIED | UNSPECIFIED | | Erikson, A. | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | | Fossati, L. | Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, Austria | UNSPECIFIED | UNSPECIFIED | | Fridlund, M. | Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands; Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92, Onsala, Sweden | UNSPECIFIED | UNSPECIFIED | | Gandolfi, D. | Dipartimento di Fisica, Universita degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, Italy | https://orcid.org/0000-0001-8627-9628 | UNSPECIFIED | | Gillon, M. | Institut d’Astrophysique et de Geophysique, Universite de Liege, Belgium | UNSPECIFIED | UNSPECIFIED | | Güdel, M. | Department of Astrophysics, University of Vienna, Tuerkenschanzstrasse 17, A-1180 Vienna, Austria | UNSPECIFIED | UNSPECIFIED | | Heng, K. | Center for Space and Habitability, University of Bern, Gesellschaftsstraße 6, 3012, Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Hoyer, S. | Laboratoire d’Astrophysique de Marseille, Univ. de Provence, France | UNSPECIFIED | UNSPECIFIED | | Kiss, L. L. | Konkoly Observatory, Research Centre for Astronomy and Earth, Budapest, Hungary | UNSPECIFIED | UNSPECIFIED | | Laskar, J. | IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ.,Sorbonne Univ., 77 av. Denfert-Rochereau, 75014 Paris, France | UNSPECIFIED | UNSPECIFIED | | Lecavelier des Etangs, A. | Institut d Astrophysique de Paris, CNRS, UMR 7095 & Sorbonne Universites, UPMC Paris 6, 98 bis bd Arago, 75014 Paris, France | UNSPECIFIED | UNSPECIFIED | | Lendl, M. | Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290, Versoix, Switzerland | UNSPECIFIED | UNSPECIFIED | | Lovis, C. | Observatoire de l Universite de Geneve, 51 chemin des Maillettes, 1290 Sauverny, Switzerland | UNSPECIFIED | UNSPECIFIED | | Magrin, D. | INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy | UNSPECIFIED | UNSPECIFIED | | Marafatto, L. | INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy | UNSPECIFIED | UNSPECIFIED | | Nascimbeni, V. | INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, Italy | UNSPECIFIED | UNSPECIFIED | | Ottensamer, R. | University of Vienna, Department of Astrophysics, Austria | UNSPECIFIED | UNSPECIFIED | | Palle, E. | Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain | Departamento de Astrofisica, Universidad de La Laguna, 38206 La Laguna, Spain | UNSPECIFIED | UNSPECIFIED | | Peter, G. | UNSPECIFIED | https://orcid.org/0000-0001-6101-2513 | UNSPECIFIED | | Piazza, D. | Physics Institute, Space Research & Planetary Sciences, University of Bern, Sidlerstr. 5, CH-3012 Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Piotto, G. | INAF – Osservatorio Astronomico di Padova, vicolo dell Osservatorio 5, 35122 Padova, Italy | UNSPECIFIED | UNSPECIFIED | | Pollacco, D. | Department of Physics, University of Warwick, Coventry CV4 7AL, UK | UNSPECIFIED | UNSPECIFIED | | Ragazzoni, R. | INAF - Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy | UNSPECIFIED | UNSPECIFIED | | Rando, N. | ESA/ESTEC, Noordwijk, Niederlande | UNSPECIFIED | UNSPECIFIED | | Ratti, F. | ESA/ESTEC, Noordwijk, Niederlande | UNSPECIFIED | UNSPECIFIED | | Rauer, H. | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | | Reimers, C. | Department of Astrophysics, University of Vienna, Tuerkenschanzs-trasse 17, 1180 Vienna, Austria | UNSPECIFIED | UNSPECIFIED | | Ribas, I. | Institut de Ciencies de l Espai (CSIC-IEEC), Carrer de Can Magrans, Campus UAB, E-08193 Bellaterra, Spain | UNSPECIFIED | UNSPECIFIED | | Santos, N. C. | Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal; Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Rua Campo Alegre, 4169-007 Porto, Portugal | UNSPECIFIED | UNSPECIFIED | | Scandariato, G. | NAF – Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy | UNSPECIFIED | UNSPECIFIED | | Segransan, D. | Observatoire de Geneve, Universite de Geneve, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland | UNSPECIFIED | UNSPECIFIED | | Simon, A. E. | Center for Space and Habitability, University of Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Smith, A M S | UNSPECIFIED | https://orcid.org/0000-0002-2386-4341 | UNSPECIFIED | | Steller, M. | Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042, Graz, Austria | UNSPECIFIED | UNSPECIFIED | | Szabo, G. M. | Konkoly Observatory, Budapest, Hungary | UNSPECIFIED | UNSPECIFIED | | Thomas, N. | Physikalisches Institut, University of Bern, Gesellsschaftstrasse 6, 3012, Bern, Switzerland | UNSPECIFIED | UNSPECIFIED | | Udry, S. | Observatoire de Genève, Sauverny, Switzerland | UNSPECIFIED | UNSPECIFIED | | Van Grootel, V. | STAR, Université de Liège, Belgium | UNSPECIFIED | UNSPECIFIED | | Walton, N. A. | Institute of Astronomy, University of Cambridge, Cambridge, UK | UNSPECIFIED | UNSPECIFIED | | Westerdorff, Karsten | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED |
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| Date: | 2022 |
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| Journal or Publication Title: | Astronomy & Astrophysics |
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| Refereed publication: | Yes |
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| Open Access: | Yes |
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| Gold Open Access: | No |
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| In SCOPUS: | Yes |
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| In ISI Web of Science: | Yes |
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| Volume: | 664 |
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| DOI: | 10.1051/0004-6361/202244221 |
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| Page Range: | L15 |
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| Publisher: | EDP Sciences |
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| ISSN: | 0004-6361 |
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| Status: | Published |
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| Keywords: | methods: observational, techniques: photometric, occultations, minor planets, asteroids: individual: Quaoar, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics |
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| HGF - Research field: | Aeronautics, Space and Transport |
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| HGF - Program: | Space |
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| HGF - Program Themes: | Space Exploration |
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| DLR - Research area: | Raumfahrt |
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| DLR - Program: | R EW - Space Exploration |
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| DLR - Research theme (Project): | R - CHEOPS Science, R - Project CHEOPS |
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Location: |
Berlin-Adlershof
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| Institutes and Institutions: | Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF
Institute of Optical Sensor Systems > Space Instruments |
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| Deposited By: |
Smith, Dr Alexis M S
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| Deposited On: | 31 Oct 2022 14:47 |
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| Last Modified: | 31 Oct 2022 14:47 |
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