Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs

Autor: Josselin Desmars, A. Burtovoi, H. Mikuž, J. R. de Barros, Emmanuel Jehin, Marcelo Assafin, J. Fabrega Polleri, S. Sposetti, D. Herald, R. Szakats, A. R. Gomes-Júnior, Bruno Sicardy, D. W. Dunham, H. Tomioka, A. Ossola, Domenico Nardiello, F. L. Rommel, C. L. Pereira, A. Stechina, T. Hayamizu, Sohrab Rahvar, P. Sogorb, R. Vieira-Martins, Jose Luis Ortiz, Julio Camargo, J. B. Dunham, Luca Zampieri, P. Pravec, R. Komžík, J. Broughton, T. Janik, Anaëlle Maury, B. E. Morgado, P. M. Kilmartin, Pablo Santos-Sanz, G. Benedetti-Rossi, K. Hosoi, Rafael Sfair, Othon C. Winter, Nicolás Morales, D. Gault, András Pál, Y. Ueno, J. Tregloan-Reed, A. C. Gilmore, T. Carruthers, Estela Fernández-Valenzuela, P. B. Siqueira, J. Lecacheux, W. Hanna, Rhian H. Jones, Michele Fiori, Jeffrey A. Newman, Valerio Nascimbeni, Jonathan Bradshaw, K. Kitazaki, E. Pimentel, Rene Duffard, Felipe Braga-Ribas, Jan Maarten Winkel, S. Kerr, P. Nosworthy, A. Marciniak, D. Hooper, Giampiero Naletto, C. Jacques, Kamil Hornoch, Colin Snodgrass, Joseph Brimacombe
Přispěvatelé: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil), Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Fundação de Amparo à Pesquisa do Estado de São Paulo, Centre National D'Etudes Spatiales (France), National Research, Development and Innovation Office (Hungary), European Research Council, Fonds de la Recherche Scientifique (Fédération Wallonie-Bruxelles), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Bairro Imperial de São Cristóvão, Federal University of Technology-Paraná (UTFPR/DAFIS), Institut Polytechnique des Sciences Avancées Ipsa, Univ. Lille, IAA-CSIC, Sorbonne Paris Cité, Universidade Federal do Rio de Janeiro (UFRJ), University of Central Florida, Universidade Estadual Paulista (Unesp), International Occultation Timing Association (IOTA), Trans-Tasman Occultation Alliance (TTOA), Canberra Astronomical Society, Samford Valley Observatory (Q79), Coral Towers Observatory, University of Padova, INAF-Astronomical Observatory of Padova, Jewel Box Observatory, Sonear Observatory, University of Canterbury, Academy of Sciences of the Czech Republic, Astronomical Association of Queensland, Lam, Swiss Astronomical Society, Research Centre for Astronomy and Earth Sciences, Eötvös Loránd University, Institute of Physics, Centro de Amigos de la Astronomia Reconquista-CAAR, Japan Occultation Information Network (JOIN), Reedy Creek Observatory, Université de Liège, Slovak Academy of Sciences, Adam Mickiewicz University, San Pedro de Atacama Celestial Explorations-SPACE, Faculty of Mathematics and Physics, Panamanian Observatory in San Pedro de Atacama-OPSPA, Sharif University of Technology, Royal Observatory, Club d'Astronomie Luberon Sud Astro, Universidad de Antofagasta
Jazyk: angličtina
Rok vydání: 2020
Předmět:
010504 meteorology & atmospheric sciences
general [Minor planets
asteroids]
FOS: Physical sciences
Context (language use)
Astrophysics
Ephemeris
01 natural sciences
0103 physical sciences
Trans-Neptunian object
010303 astronomy & astrophysics
Instrumentation and Methods for Astrophysics (astro-ph.IM)
0105 earth and related environmental sciences
Physics
[PHYS]Physics [physics]
Earth and Planetary Astrophysics (astro-ph.EP)
International Celestial Reference System
Astrometry
Kuiper belt: general
Minor planets
asteroids: general
Occultations
Minor planets
general [Kuiper belt]
Astronomy and Astrophysics
Planetary system
asteroids: general
Space and Planetary Science
Asteroid
astro-ph.EP
Astrophysics - Instrumentation and Methods for Astrophysics
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Astrophysics - Earth and Planetary Astrophysics
astro-ph.IM
Reference frame
Zdroj: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 644, pp.A40. ⟨10.1051/0004-6361/202039054⟩
Astronomy and Astrophysics-A&A, 2020, 644, pp.A40. ⟨10.1051/0004-6361/202039054⟩
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Astronomy & Astrophysics
Digital.CSIC. Repositorio Institucional del CSIC
instname
Rommel, F L, Braga-Ribas, F, Desmars, J, Camargo, J I B, Ortiz, J L, Sicardy, B, Vieira-Martins, R, Assafin, M, Santos-Sanz, P, Duffard, R, Fernández-Valenzuela, E, Lecacheux, J, Morgado, B E, Benedetti-Rossi, G, Gomes-Júnior, A R, Pereira, C L, Herald, D, Hanna, W, Bradshaw, J, Morales, N, Brimacombe, J, Burtovoi, A, Carruthers, T, Barros, J R D, Fiori, M, Gilmore, A, Hooper, D, Hornoch, K, Jacques, C, Janik, T, Kerr, S, Kilmartin, P, Winkel, J M, Naletto, G, Nardiello, D, Nascimbeni, V, Newman, J, Ossola, A, Pál, A, Pimentel, E, Pravec, P, Sposetti, S, Stechina, A, Szákats, R, Ueno, Y, Zampieri, L, Broughton, J, Dunham, J B, Dunham, D W, Gault, D, Hayamizu, T, Hosoi, K, Jehin, E, Jones, R, Kitazaki, K, Komžík, R, Marciniak, A, Maury, A, Mikuž, H, Nosworthy, P, Polleri, J F, Rahvar, S, Sfair, R, Siqueira, P B, Snodgrass, C, Sogorb, P, Tomioka, H, Tregloan-Reed, J & Winter, O C 2020, ' Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs ', Astronomy and Astrophysics, vol. 644, A40 . https://doi.org/10.1051/0004-6361/202039054
ISSN: 6798-5815
0004-6361
DOI: 10.1051/0004-6361/202039054⟩
Popis: Full list of authors: Rommel, F. L.; Braga-Ribas, F.; Desmars, J.; Camargo, J. I. B.; Ortiz, J. L.; Sicardy, B.; Vieira-Martins, R.; Assafin, M.; Santos-Sanz, P.; Duffard, R.; Fernández-Valenzuela, E.; Lecacheux, J.; Morgado, B. E.; Benedetti-Rossi, G.; Gomes-Júnior, A. R.; Pereira, C. L.; Herald, D.; Hanna, W.; Bradshaw, J.; Morales, N. Brimacombe, J.; Burtovoi, A.; Carruthers, T.; de Barros, J. R.; Fiori, M.; Gilmore, A.; Hooper, D.; Hornoch, K.; Jacques, C.; Janik, T.; Kerr, S.; Kilmartin, P.; Winkel, Jan Maarten; Naletto, G.; Nardiello, D.; Nascimbeni, V.; Newman, J.; Ossola, A.; Pál, A.; Pimentel, E.; Pravec, P.; Sposetti, S.; Stechina, A.; Szakáts, R.; Ueno, Y.; Zampieri, L.; Broughton, J.; Dunham, J. B.; Dunham, D. W.; Gault, D.; Hayamizu, T.; Hosoi, K.; Jehin, E.; Jones, R.; Kitazaki, K.; Komžík, R.; Marciniak, A.; Maury, A.; Mikuž, H.; Nosworthy, P.; Fábrega Polleri, J.; Rahvar, S.; Sfair, R.; Siqueira, P. B.; Snodgrass, C.; Sogorb, P.; Tomioka, H.; Tregloan-Reed, J.; Winter, O. C.
Context. Trans-Neptunian objects (TNOs) and Centaurs are remnants of our planetary system formation, and their physical properties have invaluable information for evolutionary theories. Stellar occultation is a ground-based method for studying these distant small bodies and has presented exciting results. These observations can provide precise profiles of the involved body, allowing an accurate determination of its size and shape. Aims. The goal is to show that even single-chord detections of TNOs allow us to measure their milliarcsecond astrometric positions in the reference frame of the Gaia second data release (DR2). Accurate ephemerides can then be generated, allowing predictions of stellar occultations with much higher reliability. Methods. We analyzed data from various stellar occultation detections to obtain astrometric positions of the involved bodies. The events published before the Gaia era were updated so that the Gaia DR2 stellar catalog is the reference, thus providing accurate positions. Events with detection from one or two different sites (single or double chord) were analyzed to determine the event duration. Previously determined sizes were used to calculate the position of the object center and its corresponding error with respectto the detected chord and the International Celestial Reference System propagated Gaia DR2 star position. Results. We derive 37 precise astrometric positions for 19 TNOs and four Centaurs. Twenty-one of these events are presented here for the first time. Although about 68% of our results are based on single-chord detection, most have intrinsic precision at the submilliarcsecond level. Lower limits on the diameter of bodies such as Sedna, 2002 KX14, and Echeclus, and also shape constraints on 2002 VE95, 2003 FF128, and 2005 TV189 are presented as valuable byproducts. Conclusions. Using the Gaia DR2 catalog, we show that even a single detection of a stellar occultation allows improving the object ephemeris significantly, which in turn enables predicting a future stellar occultation with high accuracy. Observational campaigns can be efficiently organized with this help, and may provide a full physical characterization of the involved object, or even the study of topographic features such as satellites or rings. © 2020 ESO.
This study was financed in part by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) - Finance Code 001 and the National Institute of Science and Technology of the e-Universe project (INCT do e-Universo, CNPq grant 465376/2014-2). The following authors acknowledge the respective CNPq grants: F.B.-R. 309578/2017-5; R.V.-M. 304544/2017-5, 401903/2016-8; J.I.B.C. 308150/2016-3; M.A. 427700/2018-3, 310683/2017-3, 473002/2013-2; O.C.W. 305210/2018-1. The following authors acknowledge the respective grants: B.E.M. thanks the CAPES/Cofecub-394/2016-05 grant; G.B-R. acknowledges CAPES-FAPERJ/PAPDRJ grant E26/203.173/2016; M.A. acknowledges FAPERJ grant E-26/111.488/2013; A.R.G.Jr acknowledges FAPESP grant 2018/11239-8; O.C.W. and R.S. acknowledge FAPESP grant 2016/24561-0. D.N. acknowledges support from the French Centre National d'Etudes Spatiales (CNES). K.H. and P.P. were supported by the project R.V.O.: 67985815. A.P. and R.S. received support from the K-125015 grant of the National Research, Development and Innovation Office (NKFIH, Hungary). Partial funding of the computational infrastructure and database servers are received from the grant KEP-7/2018 of the Hungarian Academy of Sciences. Some of the results were based on observations taken at the 1.6m telescope on Pico dos Dias Observatory of the National Laboratory of Astrophysics (LNA/Brazil). Some data are based on observations collected at the Copernicus and Schmidt telescopes (Asiago, Italy) of the INAF-Astronomical Observatory of Padova. This work was carried out within the "Lucky Star" umbrella that agglomerates the efforts of the Paris, Granada and Rio teams, which is funded by the European Research Council under the European Community's H2020 (ERC Grant Agreement No. 669416). This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium).Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. TRAPPIST is a project funded by the Belgian FNRS under grant FRFC 2.5.594.09.F and the ARC grant for Concerted Research Actions, financed by the Wallonia-Brussels Federation. E.J. is a FNRS Senior Research Associate. We would like to acknowledge financial support by the Spanish grant AYA-RTI2018-098657-JI00 "LEO-SBNAF" (MCIU/AEI/FEDER, U.E.) and the financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award for the Instituto de Astrofisica de Andalucia (SEV-2017-0709). Also, AYA2017-89637-R and FEDER funds are acknowledged. We are thankful to the following observers who participated and provided data for respective events as listed in Table B.1: Orlando A. Naranjo from Universidad de Los Andes, Merida/VEN; Faustino Organero from La Hita Observatory - Toledo/ESP.
Databáze: OpenAIRE
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