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J/A+A/616/A12       Gaia DR2 sources in GC and dSph (Gaia Collaboration+, 2018)

Gaia Data Release 2. Kinematics of globular clusters and dwarf galaxies around the Milky Way Gaia Collaboration, Helmi A., van Leeuwen F., Mc Millan 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., Reyle 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., Castaneda 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., Thevenin 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., Fernandez-Hernandez J., Fouesneau M., Fremat Y., Galluccio L., Garcia-Torres M., Gonzalez-Nunez J., Gonzalez-Vidal J.J., Gosset E., Guy L.P., Halbwachs J.-L., Hambly N.C., Harrison D.L., Hernandez 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., Loeffler W., Manteiga M., Marrese P.M., Martin-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., Sueveges M., Torra J., van Reeven W., Abbas U., Abreu Aramburu A., Accart S., Aerts C., Altavilla G., Alvarez 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-Nunez L., Balm P., Barache C., Barata C., Barbato D., Barblan F., Barklem P.S., Barrado D., Barros M., Barstow M.A., Bartholome Munoz S., Bassilana J.-L., Becciani U., Bellazzini M., Berihuete A., Bertone S., Bianchi L., Bienayme 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., Bruesemeister 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., Duran J., Edvardsson B., Enke H., Eriksson K., Esquej P., Eynard Bontemps G., Fabre C., Fabrizio M., Faigler S., Falcao A.J., Farras Casas M., Federici L., Fedorets G., Fernique P., Figueras F., Filippi F., Findeisen K., Fonti A., Fraile E., Fraser M., Frezouls B., Gai M., Galleti S., Garabato D., Garcia-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., Gutierrez-Sanchez R., Hofmann W., Holland G., Huckle H.E., Hypki A., Icardi V., Janssen K., Jevardat de Fombelle G., Jonker P.G., Juhasz A.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., Lindstrom H.E.P., Lister T.A., Livanou E., Lobel A., Lopez M., Managau S., Mann R.G., Mantelet G., Marchal O., Marchant J.M., Marconi M., Marinoni S., Marschalko G., Marshall D.J., Martino M., Marton G., Mary N., Matijevic G., Mazeh T., Messina S., Michalik D., Millar N.R., Molina D., Molinaro R., Molnar 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., Ordenovic C., Ordonez-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., Prsa 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-Gomez M., Rowell N., Royer F., Ruiz-Dern L., Sadowski G., Sagrista Selles 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., Segransan 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., Steidelmueller 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 L., Yoldas A., Zerjal M., Ziaeepour H., Zorec J., Zschocke S., Zucker S., Zurbach C., Zwitter T. <Astron. Astrophys. 616, A12 (2018)> =2018A&A...616A..12G (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Clusters, globular ; Galaxies, nearby ; Positional data Keywords: Galaxy: kinematics and dynamics - astrometry - globular clusters: general - galaxies: dwarf - Local Group - Magellanic Clouds Abstract: 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. 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. 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 9.8+6.7-2.7x1011M 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. All these results highlight the incredible power of the Gaia astrometric mission, and in particular of its second data release. Description: The files contains lists of possible members of each of the objects (75 globular clusters, 9 dwarf spheroidal galaxies, the Bootes I UFD, the LMC and SMC). The stars in these lists have been selected and used to determine the astrometric parameters of the corresponding objects following either the procedures described in Sec. 2.1 (for the clusters and dwarfs) or in Sec. 2.2 (for the LMC and SMC). The first column is the "source_id" as given by Gaia, the ra and declination of the star in degrees, and its G-band magnitude (known as "photgmean_mag" in the Gaia archive). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 52 87 List of group (clusters, galaxies and ultra-faint system) files/* 73 87 Individual group possible members data
See also: I/345 : Gaia DR2 (Gaia Collaboration, 2018) Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 22 A22 --- Name Group name 26- 43 A18 --- FileName Name of the files with data in subdirectory files 46- 52 I7 --- N Number of Gaia DR2 source in the associated file
Byte-by-byte Description of file: files/*
Bytes Format Units Label Explanations
1- 19 I19 --- Source Gaia DR2 source identifier (source_id) 21- 43 F23.19 deg RAdeg Gaia DR2 right ascension (ICRS, Ep=2015.5) 45- 63 F19.15 deg DEdeg Gaia DR2 declination (ICRS, Ep=2015.5) 65- 73 F9.6 mag Gmag Gaia DR2 G-band mean magnitude (Vega)
Acknowledgements: Amina Helmi, ahelmi(at)astro.rug.nl
(End) Patricia Vannier [CDS] 24-Apr-2018
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