Abstract
Trans-Neptunian objects (TNOs) are a source of invaluable information to access the history and evolution of the outer solar system. However, observing these faint objects is a difficult task. As a consequence, important properties such as size and albedo are known for only a small fraction of them. Now, with the results from deep sky surveys and the Gaia space mission, a new exciting era is within reach as accurate predictions of stellar occultations by numerous distant small solar system bodies become available. From them, diameters with kilometer accuracies can be determined. Albedos, in turn, can be obtained from diameters and absolute magnitudes. We use observations from the Dark Energy Survey (DES) from 2012 November until 2016 February, amounting to 4,292,847 charge-coupled device (CCD) frames. We searched them for all known small solar system bodies and recovered a total of 202 TNOs and Centaurs, 63 of which have been discovered by the DES collaboration as of the date of submission. Their positions were determined using the Gaia Data Release 2 as reference and their orbits were refined. Stellar occultations were then predicted using these refined orbits plus stellar positions from Gaia. These predictions are maintained, and updated, in a dedicated web service. The techniques developed here are also part of an ambitious preparation to use the data from the Large Synoptic Survey Telescope (LSST), that expects to obtain accurate positions and multifilter photometry for tens of thousands of TNOs.
Original language | English |
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Article number | 120 |
Journal | Astronomical Journal |
Volume | 157 |
Issue number | 3 |
DOIs | |
State | Published - 2019 |
Funding
M.V.B.H. acknowledges a CAPES fellowship. J.I.B.C. acknowledges CNPq grant 308150/2016-3. M.A. thanks the CNPq (grants 473002/2013-2 and 308721/2011-0) and FAPERJ (grant E-26/111.488/2013). R.V.-M. thanks grants CNPq-304544/2017-5 and 401903/2016-8. adn Faperj PAPDRJ-45/2013 and E-26/203.026/2015. F.B.-R. acknowledges CNPq grant 309578/2017-5. M.M.G. acknowledges a Capes fellowship (Proc. n°. 88887.144443/2017-00). The work leading to these results has received funding from the National Institute of Science and Technology of the e-Universe project (INCT do e-Universo, CNPq grant 465376/2014-2). The work leading to these results has received funding from the European Research Council under the European Community’s H2020 2014-2020 ERC grant Agreement n° 669416 “Lucky Star.” Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungs-gemeinschaft, and the collaborating institutions in the Dark Energy Survey. The DES data management system is supported by the National Science Foundation under grant Nos. AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project No. CE110001020, and the Brazilian Instituto Nacional de Ciência e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). This manuscript has been authored by Fermi Research Alliance, LLC under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.
Funders | Funder number |
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Australian Research Council Centre of Excellence for All-sky Astrophysics | CE110001020 |
Capes fellowship | 88887.144443/2017-00 |
Deutsche Forschungs-gemeinschaft | |
European Community’s H2020 2014-2020 ERC | |
European Union’s Seventh Framework Program | |
FP7/2007 | |
Fermi Research Alliance, LLC | DE-AC02-07CH11359 |
INCT | |
Kavli Institute of Cosmological Physics at the University of Chicago | |
Ministry of Science and Education of Spain | |
Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University | |
National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign | |
National Institute of Science and Technology | |
U.S. National Science Foundation | |
National Science Foundation | 1138766, AST-1138766, 240672, 306478, 669416, 291329, AST-1536171 |
U.S. Department of Energy | |
Office of Science | |
High Energy Physics | |
Higher Education Funding Council for England | |
Center for Cosmology and Astroparticle Physics, Ohio State University | |
Instituto Nacional de Ciência e Tecnologia Midas | |
Science and Technology Facilities Council | |
European Commission | |
European Research Council | |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
Generalitat de Catalunya | |
Ministerio de Economía y Competitividad | SEV-2016-0588, SEV-2016-0597, ESP2015-66861, MDM-2015-0509, FPA2015-68048, AYA2015-71825 |
Ministério da Ciência, Tecnologia e Inovação | |
Conselho Nacional de Desenvolvimento Científico e Tecnológico | 465376/2014-2, 308150/2016-3, 308721/2011-0, 473002/2013-2 |
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro | 309578/2017-5, PAPDRJ-45/2013, E-26/203.026/2015, E-26/111.488/2013 |
Financiadora de Estudos e Projetos | |
European Regional Development Fund |
Keywords
- Kuiper belt: general
- astrometry
- ephemerides
- occultations
- surveys