Gaia Data Release 2

Author:

,Helmi A.,van Leeuwen F.,McMillan P. J.,Massari D.,Antoja T.,Robin A. C.,Lindegren L.,Bastian U.,Arenou F.,Babusiaux C.,Biermann M.,Breddels M. A.,Hobbs D.,Jordi C.,Pancino E.,Reylé C.,Veljanoski J.,Brown A. G. A.,Vallenari A.,Prusti T.,de Bruijne J. H. J.,Bailer-Jones C. A. L.,Evans D. W.,Eyer L.,Jansen F.,Klioner S. A.,Lammers U.,Luri X.,Mignard F.,Panem C.,Pourbaix D.,Randich S.,Sartoretti P.,Siddiqui H. I.,Soubiran C.,Walton N. A.,Cropper M.,Drimmel R.,Katz D.,Lattanzi M. G.,Bakker J.,Cacciari C.,Castañeda J.,Chaoul L.,Cheek N.,De Angeli F.,Fabricius C.,Guerra R.,Holl B.,Masana E.,Messineo R.,Mowlavi N.,Nienartowicz K.,Panuzzo P.,Portell J.,Riello M.,Seabroke G. M.,Tanga P.,Thévenin F.,Gracia-Abril G.,Comoretto G.,Garcia-Reinaldos M.,Teyssier D.,Altmann M.,Andrae R.,Audard M.,Bellas-Velidis I.,Benson K.,Berthier J.,Blomme R.,Burgess P.,Busso G.,Carry B.,Cellino A.,Clementini G.,Clotet M.,Creevey O.,Davidson M.,De Ridder J.,Delchambre L.,Dell’Oro A.,Ducourant C.,Fernández-Hernández J.,Fouesneau M.,Frémat Y.,Galluccio L.,García–Torres M.,González-Núñez J.,González–Vidal J. J.,Gosset E.,Guy L. P.,Halbwachs J.-L.,Hambly N. C.,Harrison D. L.,Hernández J.,Hestroffer D.,Hodgkin S. T.,Hutton A.,Jasniewicz G.,Jean-Antoine-Piccolo A.,Jordan S.,Korn A. J.,Krone-Martins A.,Lanzafame A. C.,Lebzelter T.,Löffler W.,Manteiga M.,Marrese P. M.,Martín–Fleitas J. M.,Moitinho A.,Mora A.,Muinonen K.,Osinde J.,Pauwels T.,Petit J.-M.,Recio-Blanco A.,Richards P. J.,Rimoldini L.,Sarro L. M.,Siopis C.,Smith M.,Sozzetti A.,Süveges M.,Torra J.,van Reeven W.,Abbas U.,Abreu Aramburu A.,Accart S.,Aerts C.,Altavilla G.,Álvarez M. A.,Alvarez R.,Alves J.,Anderson R. I.,Andrei A. H.,Anglada Varela E.,Antiche E.,Arcay B.,Astraatmadja T. L.,Bach N.,Baker S. G.,Balaguer-Núñez L.,Balm P.,Barache C.,Barata C.,Barbato D.,Barblan F.,Barklem P. S.,Barrado D.,Barros M.,Barstow M. A.,Bartholomé Muñoz S.,Bassilana J.-L.,Becciani U.,Bellazzini M.,Berihuete A.,Bertone S.,Bianchi L.,Bienaymé O.,Blanco-Cuaresma S.,Boch T.,Boeche C.,Bombrun A.,Borrachero R.,Bossini D.,Bouquillon S.,Bourda G.,Bragaglia A.,Bramante L.,Bressan A.,Brouillet N.,Brüsemeister T.,Brugaletta E.,Bucciarelli B.,Burlacu A.,Busonero D.,Butkevich A. G.,Buzzi R.,Caffau E.,Cancelliere R.,Cannizzaro G.,Cantat-Gaudin T.,Carballo R.,Carlucci T.,Carrasco J. M.,Casamiquela L.,Castellani M.,Castro-Ginard A.,Charlot P.,Chemin L.,Chiavassa A.,Cocozza G.,Costigan G.,Cowell S.,Crifo F.,Crosta M.,Crowley C.,Cuypers J.,Dafonte C.,Damerdji Y.,Dapergolas A.,David P.,David M.,de Laverny P.,De Luise F.,De March R.,de Martino D.,de Souza R.,de Torres A.,Debosscher J.,del Pozo E.,Delbo M.,Delgado A.,Delgado H. E.,Di Matteo P.,Diakite S.,Diener C.,Distefano E.,Dolding C.,Drazinos P.,Durán J.,Edvardsson B.,Enke H.,Eriksson K.,Esquej P.,Eynard Bontemps G.,Fabre C.,Fabrizio M.,Faigler S.,Falcão A. J.,Farràs Casas M.,Federici L.,Fedorets G.,Fernique P.,Figueras F.,Filippi F.,Findeisen K.,Fonti A.,Fraile E.,Fraser M.,Frézouls B.,Gai M.,Galleti S.,Garabato D.,García–Sedano F.,Garofalo A.,Garralda N.,Gavel A.,Gavras P.,Gerssen J.,Geyer R.,Giacobbe P.,Gilmore G.,Girona S.,Giuffrida G.,Glass F.,Gomes M.,Granvik M.,Gueguen A.,Guerrier A.,Guiraud J.,Gutiérrez–Sánchez R.,Haigron R.,Hatzidimitriou D.,Hauser M.,Haywood M.,Heiter U.,Heu J.,Hilger T.,Hofmann W.,Holland G.,Huckle H. E.,Hypki A.,Icardi V.,Janßen K.,Jevardat de Fombelle G.,Jonker P. G.,Juhász Á. L.,Julbe F.,Karampelas A.,Kewley A.,Klar J.,Kochoska A.,Kohley R.,Kolenberg K.,Kontizas M.,Kontizas E.,Koposov S. E.,Kordopatis G.,Kostrzewa-Rutkowska Z.,Koubsky P.,Lambert S.,Lanza A. F.,Lasne Y.,Lavigne J.-B.,Le Fustec Y.,Le Poncin-Lafitte C.,Lebreton Y.,Leccia S.,Leclerc N.,Lecoeur-Taibi I.,Lenhardt H.,Leroux F.,Liao S.,Licata E.,Lindstrøm H. E. P.,Lister T. A.,Livanou E.,Lobel A.,López M.,Managau S.,Mann R. G.,Mantelet G.,Marchal O.,Marchant J. M.,Marconi M.,Marinoni S.,Marschalkó G.,Marshall D. J.,Martino M.,Marton G.,Mary N.,Matijevič G.,Mazeh T.,Messina S.,Michalik D.,Millar N. R.,Molina D.,Molinaro R.,Molnár L.,Montegriffo P.,Mor R.,Morbidelli R.,Morel T.,Morris D.,Mulone A. F.,Muraveva T.,Musella I.,Nelemans G.,Nicastro L.,Noval L.,O’Mullane W.,Ordénovic C.,Ordóñez–Blanco D.,Osborne P.,Pagani C.,Pagano I.,Pailler F.,Palacin H.,Palaversa L.,Panahi A.,Pawlak M.,Piersimoni A. M.,Pineau F.-X.,Plachy E.,Plum G.,Poggio E.,Poujoulet E.,Prša A.,Pulone L.,Racero E.,Ragaini S.,Rambaux N.,Ramos-Lerate M.,Regibo S.,Riclet F.,Ripepi V.,Riva A.,Rivard A.,Rixon G.,Roegiers T.,Roelens M.,Romero-Gómez M.,Rowell N.,Royer F.,Ruiz-Dern L.,Sadowski G.,Sagristà Sellés T.,Sahlmann J.,Salgado J.,Salguero E.,Sanna N.,Santana-Ros T.,Sarasso M.,Savietto H.,Schultheis M.,Sciacca E.,Segol M.,Segovia J. C.,Ségransan D.,Shih I-C.,Siltala L.,Silva A. F.,Smart R. L.,Smith K. W.,Solano E.,Solitro F.,Sordo R.,Soria Nieto S.,Souchay J.,Spagna A.,Spoto F.,Stampa U.,Steele I. A.,Steidelmüller H.,Stephenson C. A.,Stoev H.,Suess F. F.,Surdej J.,Szabados L.,Szegedi-Elek E.,Tapiador D.,Taris F.,Tauran G.,Taylor M. B.,Teixeira R.,Terrett D.,Teyssandier P.,Thuillot W.,Titarenko A.,Torra Clotet F.,Turon C.,Ulla A.,Utrilla E.,Uzzi S.,Vaillant M.,Valentini G.,Valette V.,van Elteren A.,Van Hemelryck E.,van Leeuwen M.,Vaschetto M.,Vecchiato A.,Viala Y.,Vicente D.,Vogt S.,von Essen C.,Voss H.,Votruba V.,Voutsinas S.,Walmsley G.,Weiler M.,Wertz O.,Wevems T.,Wyrzykowski Ł.,Yoldas A.,Žerjal M.,Ziaeepour H.,Zorec J.,Zschocke S.,Zucker S.,Zurbach C.,Zwitter T.

Abstract

Context. Aims. The goal of this paper is to demonstrate the outstanding quality of the second data release of the Gaia mission and its power for constraining many different aspects of the dynamics of the satellites of the Milky Way. We focus here on determining the proper motions of 75 Galactic globular clusters, nine dwarf spheroidal galaxies, one ultra-faint system, and the Large and Small Magellanic Clouds. Methods. Using data extracted from the Gaia archive, we derived the proper motions and parallaxes for these systems, as well as their uncertainties. We demonstrate that the errors, statistical and systematic, are relatively well understood. We integrated the orbits of these objects in three different Galactic potentials, and characterised their properties. We present the derived proper motions, space velocities, and characteristic orbital parameters in various tables to facilitate their use by the astronomical community. Results. Our limited and straightforward analyses have allowed us for example to (i) determine absolute and very precise proper motions for globular clusters; (ii) detect clear rotation signatures in the proper motions of at least five globular clusters; (iii) show that the satellites of the Milky Way are all on high-inclination orbits, but that they do not share a single plane of motion; (iv) derive a lower limit for the mass of the Milky Way of 9.1-2.6+6.2 × 1011 M based on the assumption that the Leo I dwarf spheroidal is bound; (v) derive a rotation curve for the Large Magellanic Cloud based solely on proper motions that is competitive with line-of-sight velocity curves, now using many orders of magnitude more sources; and (vi) unveil the dynamical effect of the bar on the motions of stars in the Large Magellanic Cloud. Conclusions. All these results highlight the incredible power of the Gaia astrometric mission, and in particular of its second data release.

Publisher

EDP Sciences

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 520 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3