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 24 M. Altmann R. Andrae M. Audard 25 I. Bellas-Velidis K. Benson J. Berthier 26 R. Blomme 27 P. Burgess 17 G. Busso 17 B. Carry 28 A. Cellino 29 G. Clementini 30 M. Clotet O. Creevey 31 M. David J. De Ridder 22 L. Delchambre A. Dell’oro C. Ducourant 13 J. Hernandez 32 M. Fouesneau Y. Frémat 3 L. Galluccio 33 M. García–torres J. González-Núñez J. González–vidal E. Gosset 34 P. Guy 35 J. Halbwachs C. Hambly D. Harrison D. Hestroffer 36 T. Hodgkin A. Hutton G. Jasniewicz 37 A. Jean-Antoine-Piccolo S. Jordan 38 J. Korn A. Krone-Martins 39 C. Lanza T. Lebzelter W. Löffler M. Manteiga M. Marrese J. Martín–fleitas A. Moitinho 40 A. Mor K. Muinonen 41 J. Osinde T. Pauwels 27 J. Petit 42 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 43 A. Abreu Aramburu S. Accart C. Aerts 44 G. Altavilla M. Álvarez R. Alvarez J. Alves R. Anderson H. Andrei E. Anglada Varela E. Antiche B. Arcay T. Astraatmadja 45 N. Bach 46 S. Baker L. Balaguer-Nunez 47 P. Balm C. Barache 48 C. Barata 49 D. Barbato F. Barblan S. Barklem D. Barrado 50 M. Barros M. Barstow 51 S. Bartholomé Muñoz J. Bassilana U. Becciani M. Bellazzini A. Berihuete S. Bertone L. Bianchi 52 O. Bienaymé 53 S. Blanco-Cuaresma 54 T. Boch C. Boeche A. Bombrun 55 R. Borrachero D. Bossini S. Bouquillon 48 G. Bourda 13 A. Bragaglia L. Bramante A. Bressan 56 N. Brouillet 57 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 48 J. Carrasco 58 L. Casamiquela 13 M. Castellani 59 A. Castro-Ginard P. Charlot 13 L. Chemin A. Chiavassa 37 G. Cocozza G. Costigan S. Cowell 17 F. Crifo 3 M. Crosta C. Crowley 60 J. Cuypers 27 C. Dafonte Y. Damerdji 61 A. Dapergolas P. David P. De Laverny 10 F. De Luise 62 R. De March D. Martino 63 R. De Souza A. De Torres J. Debosscher 64 E. Del Pozo M. Delbò 10 A. Delgado 65 H. Delgado P. Di Matteo 3 S. Diakite 66 C. Diener E. Distefano C. Dolding P. Drazinos J. Duran 67 B. Edvardsson 68 H. Enke K. Eriksson 68 P. Esquej G. Eynard Bontemps C. Fabre 69 M. Fabrizio 70 S. Faigler J. Falcão M. Farràs Casas L. Federici 71 G. Fedorets P. Fernique 72 F. Figueras 73 F. Filippi 74 K. Findeisen A. Fonti E. Fraile M. Fraser 75 B. Frézouls M. Gai 29 S. Galleti D. Garabato F. García–sedano A. Garofalo 76 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 77 A. Guerrier 78 J. Guiraud 79 R. Gutiérrez–sánchez W. Hofmann G. Holland H. Huckle A. Hypki V. Icardi K. Janßen G. Jevardat de Fombelle G. Jonker L. Juhasz 80 F. Julbe A. Karampelas A. Kewley J. Klar A. Kochoska R. Kohley 81 K. Kolenberg M. Kontizas E. Kontizas S. Koposov G. Kordopatis 10 Z. Kostrzewa-Rutkowska P. Koubsky S. Lambert 82 A. Lanza Y. Lasne 83 J. Lavigne Y. Le Fustec C. Le Poncin-Lafitte 84 Y. Lebreton 3 S. Leccia N. Leclerc 85 I. Lecoeur-Taibi H. Lenhardt F. Leroux S. Liao 86 E. Licata H. Lindstrøm T. Lister E. Livanou A. Lobel 27 M. López S. Managau G. Mann 87 G. Mantelet 88 O. Marchal 89 J. Marchant 90 M. Marconi S. Marinoni G. Marschalkó J. Marshall M. Martino G. Marton 91 N. Mary 92 G. Matijevič T. Mazeh 93 S. Messina D. Michalik R. Millar 94 D. Molina R. Molinaro 95 L. Molnar 96 P. Montegriffo R. Mor R. Morbidelli T. Morel 97 D. Morris 98 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 99 H. Palacin L. Palaversa A. Panahi M. Pawlak M. Piersimoni F. Pineau 100 E. Plachy G. Plum E. Poggio E. Poujoulet A. Prša L. Pulone E. Racero S. Ragaini N. Rambaux 36 M. Ramos-Lerate S. Regibo F. Riclet V. Ripepi 101 A. Riva 102 A. Rivard G. Rixon 17 T. Roegiers M. Roelens 103 M. Romero-Gomez 104 N. Rowell F. Royer 3 L. Ruiz-Dern 78 G. Sadowski 105 T. Sagristà Sellés J. Sahlmann J. Salgado 106 E. Salguero N. Sanna T. Santana-Ros 107 M. Sarasso H. Savietto M. Schultheis 5 E. Sciacca M. Segol 108 C. Segovia D. Segransan 54 C. Shih 109 L. Siltala A. Silva R. Smart 29 W. Smith E. Solano 110 F. Solitro R. Sordo S. Soria Nieto J. Souchay 48 A. Spagna F. Spoto 111 U. Stampa A. Steele 112 H. Steidelmüller C. Stephenson H. Stoev F. Suess J. Surdej 113 L. Szabados 114 E. Szegedi-Elek D. Tapiador F. Taris G. Tauran M. Taylor R. Teixeira 115 D. Terrett P. Teyssandier 48 W. Thuillot 36 A. Titarenko F. Torra Clotet C. Turon 3 A. Ulla E. Utrilla S. Uzzi M. Vaillant 116 G. Valentini 117 V. Valette 118 A. Van Elteren E. Van Hemelryck M. Van Leeuwen M. Vaschetto A. Vecchiato 119 Y. Viala 3 D. Vicente 120 S. Vogt 121 C. Von Essen H. Voss V. Votruba S. Voutsinas G. Walmsley M. Weiler 122 O. Wertz T. Wevems Ł. Wyrzykowski A. Yoldas 17 M. Žerjal H. Ziaeepour 123 J. Zorec 124 S. Zschocke 125 S. Zucker 126 C. Zurbach 127 T. Zwitter
13 M2A 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
57 FORMATION STELLAIRE 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
118 Equipe EES
EBI - Ecologie et biologie des interactions
119 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 : lundi 26 novembre 2018 - 17:20:02

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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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