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Study of the Plutino Object (208996) 2003 AZ(84) from Stellar Occultations: Size, Shape, and Topographic Features
Dias-Oliveira, A.1; Sicardy, B.2; Ortiz, J. L.3; Braga-Ribas, F.1,4; Leiva, R.2,5; Vieira-Martins, R.1,6,7; Benedetti-Rossi, G.1; Camargo, J. I. B.1,7; Assafin, M.8; Gomes-Junior, A. R.8; Baug, T.9; Chandrasekhar, T.9; Desmars, J.2; Duffard, R.3; Santos-Sanz, P.3; Zhao EG(赵二刚)10; Ganesh, S.9; Ikari, Y.11; Irawati, P.12; Jain, J.9; Zhu LY(朱俐颖)10; Richichi, A.12; Qian SB(钱声帮)10; Behrend, R.13; Benkhaldoun, Z.14; Brosch, N.15; Daassou, A.14; Frappa, E.16; Gal-Yam, A.17; Garcia-Lozano, R.18; Gillon, M.19; Jehin, E.19; Kaspi, S.15; Klotz, A.20; Lecacheux, J.2; Mahasena, P.21; Manfroid, J.19; Manulis, I.17; Maury, A.22; Mohan, V.23; Morales, N.3; Ofek, E.17; Rinner, C.24; Sharma, A.25; Sposetti, S.13; Tanga, P.26; Thirouin, A.27; Vachier, F.6; Widemann, T.2; Asai, A.11; Hayato, Watanabe11; Hiroyuki, Watanabe11; Owada, M.11; Yamamura, H.11; Hayamizu, T.11; Bradshaw, J.28,29; Kerr, S.30; Tomioka, H.36; Andersson, S.31; Dangl, G.32; Haymes, T.33; Naves, R.34; Wortmann, G.35
Source PublicationASTRONOMICAL JOURNAL
2017-07-01
Volume154Issue:1
DOI10.3847/1538-3881/aa74e9
Contribution Rank第10完成单位
Indexed BySCI
KeywordKuiper Belt Objects: Individual (208996, 2003az84) Occultations Planets And Satellites: Fundamental Parameters Planets And Satellites: Surfaces
Abstract

We present results derived from four stellar occultations by the plutino object (208996) 2003. AZ(84), detected on 2011 January 8 (single-chord event), 2012 February 3 (multi-chord), 2013 December 2 (single-chord), and 2014 November 15 (multi-chord). Our observations rule out an oblate spheroid solution for 2003. AZ(84)'s shape. Instead, assuming hydrostatic equilibrium, we find that a Jacobi triaxial solution with semiaxes (470 +/- 20) x (383 +/- 10) x (245 +/- 8) km can better account for all our occultation observations. Combining these dimensions with the rotation period of the body (6.75 hr) and the amplitude of its rotation light curve, we derive a density rho = 0.87 +/- 0.01g cm(-3), a geometric albedo p(V) = 0.097 +/- 0.009. A grazing chord observed during the 2014 occultation reveals a topographic feature along 2003. AZ(84) ' s limb, which can be interpreted as an abrupt chasm of width similar to 23. km and depth >8 km, or a smooth depression of width similar to 80. km and depth similar to 13 km (or an intermediate feature between those two extremes).

Funding ProjectFrench grants "Beyond Neptune"[ANR-08-BLAN-0177] ; "Beyond Neptune II"[ANR-11-IS56-0002] ; European Research Council under the European Community's[H2020 (2014-2020/ERC] ; European Research Council under the European Community's[669416] ; CONICYT-PCHA/Doctorado[Nacional/2014-21141198] ; CAPES[BEX 9110/12-7] ; CAPES[203.173/2016] ; FAPERJ/PAPDRJ[E-45/2013] ; FAPERJ/PAPDRJ[E26/200.464/2015227833] ; European Union's Horizon Research and Innovation Programme[687378] ; CNPq[306885/2013] ; CNPq[473002/2013-2] ; CNPq[308721/ 2011-0] ; Capes/Cofecub[2506/2015] ; Faperj[PAPDRJ-45/2013] ; Faperj[E-26/203.026/2015] ; Faperj[E-26/111.488/2013] ; CNPq/PQ2 fellowship[308489/ 2013-6] ; Searchlight Observatory Network Funding from Spanish[AYA-2014-56637-C2-1-P] ; Proyecto de Excelencia de la Junta de Andaluca[JA 2012FQM1776] ; Lowell Observatory
Funding OrganizationFrench grants "Beyond Neptune"[ANR-08-BLAN-0177] ; "Beyond Neptune II"[ANR-11-IS56-0002] ; European Research Council under the European Community's[H2020 (2014-2020/ERC, 669416] ; CONICYT-PCHA/Doctorado[Nacional/2014-21141198] ; CAPES[BEX 9110/12-7, 203.173/2016] ; FAPERJ/PAPDRJ[E-45/2013, E26/200.464/2015227833] ; European Union's Horizon Research and Innovation Programme[687378] ; CNPq[306885/2013, 473002/2013-2, 308721/ 2011-0] ; Capes/Cofecub[2506/2015] ; Faperj[PAPDRJ-45/2013, E-26/203.026/2015, E-26/111.488/2013] ; CNPq/PQ2 fellowship[308489/ 2013-6] ; Searchlight Observatory Network Funding from Spanish[AYA-2014-56637-C2-1-P] ; Proyecto de Excelencia de la Junta de Andaluca[JA 2012FQM1776] ; Lowell Observatory
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS IDWOS:000404755100001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTrans-neptunian Objects ; Short-term Variability ; Solar-system ; 2060 Chiron ; Albedo ; Radius ; Planet ; Centaurs
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10153
Collection双星与变星研究组
Corresponding AuthorDias-Oliveira, A.
Affiliation1.Observatório Nacional/MCTI, Rua General José Cristino 77, Rio de Janeiro—RJ, 20.921-400, Brazil
2.LESIA/Observatoire de Paris, CNRS UMR 8109, Université Pierre et Marie Curie, Université Paris-Diderot, 5 place Jules Janssen, F-92195 Meudon Cédex, France
3.Instituto de Astrofísica de Andalucía-CSIC, Apt 3004, E-18080, Granada, Spain
4.Federal University of Technology—Paraná (UTFPR/DAFIS), R. Sete de Setembro 3165, Curitiba—PR, 80230-901, Brazil
5.Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
6.IMCCE/Observatorie de Paris, 77 Avenue Denfert Rochereau, Paris, F-75014, France
7.Laboratório Interinstitucional de e-Astronomia—LIneA, Rua General José Cristino 77, Rio de Janeiro—RJ, 20.921-400, Brazil
8.Observatório do Valongo/UFRJ, Ladeira Pedro Antonio 43, Rio de Janeiro—RJ, 20080-090, Brazil
9.Physical Research Laboratory, Ahmedabad, Gujarat 380009, India
10.Yunnan Observatories, Chinese Academy of Sciences, Yunnan, China
11.Japan Occultation Information Network (JOIN), Japan
12.National Astronomical Research Institute of Thailand, Siriphanich Building, Chiang Mai 50200, Thailand
13.Observatoire de Genève, 1290 Versoix, Switzerland
14.Oukaimeden Observatory, LPHEA, Cadi Ayyad University, Morocco
15.Wise Observatory and School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel
16.EURASTER, 8 route de Soulomes, F-46240 Labastide-Murat, France
17.Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel
18.Observatorio de Busot, Spain
19.Institut d'Astrophysique, de Géophysique et Océanographie, Université de Liège, Allée du 6 aohat ut 17, B-4000 Liége, Belgium
20.Université de Toulouse, UPS-OMP, IRAP, 14 Avenue Edouard Belin, F-31400 Toulouse, France
21.Observatorium Bosscha, Institut Teknologi Bandung, Indonesia
22.San Pedro de Atacama Celestial Explorations (S.P.A.C.E.), San Pedro de Atacama, Chile
23.IUCAA Girawali Observatory, India
24.Moroccan Oukaimeden Sky Survey, Morocco
25.Nikaya Observatory, Tamil Nadu 635114, India
26.Laboratoire Lagrange, UMR7293, Uni. Côte d'Azur, CNRS, Observatoire de la Côte d'Azur Boulevard de l'Observatoire, CS 34229, F-06304 Nice, France
27.Lowell Observatory, 1400 W Mars Hill Rd, Flagstaff, Arizona, USA
28.International Occultation Timing Association (IOTA), P.O. Box 7152, Kent, WA 98042, USA
29.Samford Valley Observatory, QLD, Australia
30.Royal Astronomical Society of New Zealand—Occultation Section, New Zealand
31.Amateursternwarte Mueggelheim, Wiesbacher Weg 8, D-12559 Berlin, Germany
32.A-3830, Nonndorf 12, Austria
33.BAA Asteroids and Remote Planets Section, Hill Rise, Knowl Hill Common, RG10 9YD, UK
34.c/Jaume Balmes n 24 Cabrils E-08348, Spain
35.Archenhold-Observatory, Neue Krugallee 180, D-12437 Berlin, Germany
36.Independent Astronomer.
Recommended Citation
GB/T 7714
Dias-Oliveira, A.,Sicardy, B.,Ortiz, J. L.,et al. Study of the Plutino Object (208996) 2003 AZ(84) from Stellar Occultations: Size, Shape, and Topographic Features[J]. ASTRONOMICAL JOURNAL,2017,154(1).
APA Dias-Oliveira, A..,Sicardy, B..,Ortiz, J. L..,Braga-Ribas, F..,Leiva, R..,...&Wortmann, G..(2017).Study of the Plutino Object (208996) 2003 AZ(84) from Stellar Occultations: Size, Shape, and Topographic Features.ASTRONOMICAL JOURNAL,154(1).
MLA Dias-Oliveira, A.,et al."Study of the Plutino Object (208996) 2003 AZ(84) from Stellar Occultations: Size, Shape, and Topographic Features".ASTRONOMICAL JOURNAL 154.1(2017).
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