Gaia Data Release 2. Kinematics of globular clusters and dwarf galaxies around the Milky Way

Collaboration Gaia A. Helmi 1 F. Van Leeuwen J. Mcmillan D. Massari T. Antoja C. Robin L. Lindegren U. Bastian 2 F. Arenou 3 C. Babusiaux 3 M. Biermann M. Breddels D. Hobbs C. Jordi E. Pancino 4 C. Reyle 5 J. Veljanoski A. Brown A. Vallenari T. Prusti 6 J. De Bruijne C. Bailer-Jones D. Evans L. Eyer 7 F. Jansen 8 S. Klioner U. Lammers X. Luri 9 F. Mignard 10 C. Panem D. Pourbaix 11 S. Randich P. Sartoretti 3 H. Siddiqui 12 C. Soubiran 13 A. Walton M. Cropper R. Drimmel D. Katz 3 M. Lattanzi 14 J. Bakker 15 C. Cacciari 16 J. Castañeda L. Chaoul N. Cheek F. De Angeli 17 C. Fabricius 18 R. Guerra 19 B. Holl 20 E. Masana 21 R. Messineo N. Mowlavi K. Nienartowicz P. Panuzzo 22 J. Portell M. Riello M. Seabroke P. Tanga 10 F. Thevenin 10 G. Gracia-Abril G. Comoretto 23 M. Garcia-Reinaldos D. Teyssier M. Altmann R. Andrae M. Audard 24 I. Bellas-Velidis K. Benson J. Berthier 25 R. Blomme 26 P. Burgess 17 G. Busso 17 B. Carry 27 A. Cellino 28 G. Clementini 29 M. Clotet O. Creevey 30 M. David J. De Ridder 22 L. Delchambre A. Dell’oro C. Ducourant 13 J. Hernandez 31 M. Fouesneau Y. Frémat 3 L. Galluccio 32 M. García–torres J. González-Núñez J. González–vidal E. Gosset 33 P. Guy 34 J. Halbwachs C. Hambly D. Harrison D. Hestroffer 35 T. Hodgkin A. Hutton G. Jasniewicz 36 A. Jean-Antoine-Piccolo S. Jordan 37 J. Korn A. Krone-Martins 38 C. Lanza T. Lebzelter W. Löffler M. Manteiga M. Marrese J. Martín–fleitas A. Moitinho 39 A. Mor K. Muinonen 40 J. Osinde T. Pauwels 26 J. Petit 41 A. Recio-Blanco 10 J. Richards L. Rimoldini M. Sarro C. Siopis M. Smith A. Sozzetti M. Süveges J. Torra W. Van Reeven U. Abbas 42 A. Abreu Aramburu S. Accart C. Aerts 43 G. Altavilla M. Álvarez R. Alvarez J. Alves R. Anderson H. Andrei E. Anglada Varela E. Antiche B. Arcay T. Astraatmadja 44 N. Bach 45 S. Baker L. Balaguer-Nunez 46 P. Balm C. Barache 47 C. Barata 48 D. Barbato F. Barblan S. Barklem D. Barrado 49 M. Barros M. Barstow 50 S. Bartholomé Muñoz J. Bassilana U. Becciani M. Bellazzini A. Berihuete S. Bertone L. Bianchi 51 O. Bienaymé 52 S. Blanco-Cuaresma 53 T. Boch C. Boeche A. Bombrun 54 R. Borrachero D. Bossini S. Bouquillon 47 G. Bourda 13 A. Bragaglia L. Bramante A. Bressan 55 N. Brouillet 56 T. Brüsemeister E. Brugaletta B. Bucciarelli A. Burlacu D. Busonero A. Butkevich R. Buzzi E. Caffau 3 R. Cancelliere G. Cannizzaro T. Cantat-Gaudin R. Carballo T. Carlucci 47 J. Carrasco 57 L. Casamiquela 13 M. Castellani 58 A. Castro-Ginard P. Charlot 13 L. Chemin A. Chiavassa 36 G. Cocozza G. Costigan S. Cowell 17 F. Crifo 3 M. Crosta C. Crowley 59 J. Cuypers 26 C. Dafonte Y. Damerdji 60 A. Dapergolas P. David P. De Laverny 10 F. De Luise 61 R. De March D. Martino 62 R. De Souza A. De Torres J. Debosscher 63 E. Del Pozo M. Delbò 10 A. Delgado 64 H. Delgado P. Di Matteo 3 S. Diakite 65 C. Diener E. Distefano C. Dolding P. Drazinos J. Duran 66 B. Edvardsson 67 H. Enke K. Eriksson 67 P. Esquej G. Eynard Bontemps C. Fabre 68 M. Fabrizio 69 S. Faigler J. Falcão M. Farràs Casas L. Federici 70 G. Fedorets P. Fernique 71 F. Figueras 72 F. Filippi 73 K. Findeisen A. Fonti E. Fraile M. Fraser 74 B. Frézouls M. Gai 28 S. Galleti D. Garabato F. García–sedano A. Garofalo 75 N. Garralda A. Gavel P. Gavras J. Gerssen R. Geyer P. Giacobbe G. Gilmore S. Girona G. Giuffrida F. Glass M. Gomes M. Granvik A. Gueguen 76 A. Guerrier 77 J. Guiraud 78 R. Gutiérrez–sánchez W. Hofmann G. Holland H. Huckle A. Hypki V. Icardi K. Janßen G. Jevardat de Fombelle G. Jonker L. Juhasz 79 F. Julbe A. Karampelas A. Kewley J. Klar A. Kochoska R. Kohley 80 K. Kolenberg M. Kontizas E. Kontizas S. Koposov G. Kordopatis 10 Z. Kostrzewa-Rutkowska P. Koubsky S. Lambert 81 A. Lanza Y. Lasne 82 J. Lavigne Y. Le Fustec C. Le Poncin-Lafitte 83 Y. Lebreton 3 S. Leccia N. Leclerc 84 I. Lecoeur-Taibi H. Lenhardt F. Leroux S. Liao 85 E. Licata H. Lindstrøm T. Lister E. Livanou A. Lobel 26 M. López S. Managau G. Mann 86 G. Mantelet 87 O. Marchal 88 J. Marchant 89 M. Marconi S. Marinoni G. Marschalkó J. Marshall M. Martino G. Marton 90 N. Mary 91 G. Matijevič T. Mazeh 92 S. Messina D. Michalik R. Millar 93 D. Molina R. Molinaro 94 L. Molnar 95 P. Montegriffo R. Mor R. Morbidelli T. Morel 96 D. Morris 97 A. Mulone T. Muraveva I. Musella G. Nelemans L. Nicastro L. Noval W. O’mullane C. Ordenovic 10 D. Ordóñez–blanco P. Osborne C. Pagani I. Pagano F. Pailler 98 H. Palacin L. Palaversa A. Panahi M. Pawlak M. Piersimoni F. Pineau 99 E. Plachy G. Plum E. Poggio E. Poujoulet A. Prša L. Pulone E. Racero S. Ragaini N. Rambaux 35 M. Ramos-Lerate S. Regibo F. Riclet V. Ripepi 100 A. Riva 101 A. Rivard G. Rixon 17 T. Roegiers M. Roelens 102 M. Romero-Gomez 103 N. Rowell F. Royer 3 L. Ruiz-Dern 77 G. Sadowski 104 T. Sagristà Sellés J. Sahlmann J. Salgado 105 E. Salguero N. Sanna T. Santana-Ros 106 M. Sarasso H. Savietto M. Schultheis 5 E. Sciacca M. Segol 107 C. Segovia D. Segransan 53 C. Shih 108 L. Siltala A. Silva R. Smart 28 W. Smith E. Solano 109 F. Solitro R. Sordo S. Soria Nieto J. Souchay 47 A. Spagna F. Spoto 110 U. Stampa A. Steele 111 H. Steidelmüller C. Stephenson H. Stoev F. Suess J. Surdej 112 L. Szabados 113 E. Szegedi-Elek D. Tapiador F. Taris G. Tauran M. Taylor R. Teixeira 114 D. Terrett P. Teyssandier 47 W. Thuillot 35 A. Titarenko F. Torra Clotet C. Turon 3 A. Ulla E. Utrilla S. Uzzi M. Vaillant 115 G. Valentini 116 V. Valette 117 A. Van Elteren E. Van Hemelryck M. Van Leeuwen M. Vaschetto A. Vecchiato 118 Y. Viala 3 D. Vicente 119 S. Vogt 120 C. Von Essen H. Voss V. Votruba S. Voutsinas G. Walmsley M. Weiler 121 O. Wertz T. Wevems Ł. Wyrzykowski A. Yoldas 17 M. Žerjal H. Ziaeepour 122 J. Zorec 123 S. Zschocke 124 S. Zucker 125 C. Zurbach 126 T. Zwitter
13 M2A 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
56 FORMATION STELLAIRE 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
117 Equipe EES
EBI - Ecologie et biologie des interactions
118 Astrometry
OATo - INAF - Osservatorio Astrofisico di Torino
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.
Type de document :
Article dans une revue
Astronomy and Astrophysics - A&A, EDP Sciences, 2018, 616, pp.id.A12. 〈10.1051/0004-6361/201832698〉
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https://hal.archives-ouvertes.fr/hal-01867358
Contributeur : Marie-Paule Pomies <>
Soumis le : mardi 4 septembre 2018 - 11:44:41
Dernière modification le : jeudi 7 février 2019 - 17:13:43

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Collaboration Gaia, A. Helmi, F. Van Leeuwen, J. Mcmillan, D. Massari, et al.. Gaia Data Release 2. Kinematics of globular clusters and dwarf galaxies around the Milky Way. Astronomy and Astrophysics - A&A, EDP Sciences, 2018, 616, pp.id.A12. 〈10.1051/0004-6361/201832698〉. 〈hal-01867358〉

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