INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy;Univ Turin, Dipartimento Fis, Via Pietro Giuria 1, I-10125 Turin, Italy
Robin, A. C. (författare)
Univ Bourgogne Franche Comte, OSU THETA Franche Comte Bourgogne, Inst UTINAM UMR6213, F-25000 Besancon, France
Evans, D. W. (författare)
Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
Uppsala universitet,Teoretisk astrofysik,Observationell astrofysik
Krone-Martins, A. (författare)
Univ Lisbon, CENTRA, FCUL, Edif C8, P-1749016 Lisbon, Portugal
Lanzafame, A. C. (författare)
Univ Catania, Dipartimento Fis & Astron, Sez Astrofis, Via S Sofia 78, I-95123 Catania, Italy;INAF Osservatorio Astrofis Catania, Via S Sofia 78, I-95123 Catania, Italy
Lebzelter, T. (författare)
Univ Vienna, Dept Astrophys, Turkenschanzstr 17, A-1180 Vienna, Austria
Univ A Coruna, CITIC Astron & Astrophys, Campus Elvina S-N, La Coruna 15071, Spain;Univ A Coruna, CITIC Dept Comp Sci, Campus Elvina S-N, La Coruna 15071, Spain
Marrese, P. M. (författare)
Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy;INAF Osservatorio Astron Roma, Via Frascati 33,00078 Monte Porzio Catone, I-00040 Rome, Italy
Martin-Fleitas, J. M. (författare)
Aurora Technol ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Moitinho, A. (författare)
Univ Lisbon, CENTRA, FCUL, Edif C8, P-1749016 Lisbon, Portugal
Mora, A. (författare)
Aurora Technol ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Muinonen, K. (författare)
Univ Helsinki, Dept Phys, POB 64, Helsinki 00014, Finland;Finnish Geospatial Res Inst FGI, Geodeetinrinne 2, Masala 02430, Finland
Osinde, J. (författare)
Isdefe ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Pancino, E. (författare)
INAF Osservatorio Astrofi Arcetri, Largo Enrico Fermi 5, I-50125 Florence, Italy;Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy
Pauwels, T. (författare)
Royal Observ Belgium, Ringlaan 3, B-1180 Brussels, Belgium
Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy;INAF Osservatorio Astron Roma, Via Frascati 33,00078 Monte Porzio Catone, I-00040 Rome, Italy;INAF Osservatorio Astrofis & Sci Spazio Bologna, Via Piero Gobetti 93-3, I-40129 Bologna, Italy
Alvarez, M. A. (författare)
Univ A Coruna, CITIC Dept Comp Sci, Campus Elvina S-N, La Coruna 15071, Spain
Alvarez, R. (författare)
European Space Astron Ctr ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Alves, J. (författare)
Univ Vienna, Dept Astrophys, Turkenschanzstr 17, A-1180 Vienna, Austria
Anderson, R. I. (författare)
European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany;Univ Geneva, Dept Astron, Chemin Maillettes 51, CH-1290 Versoix, Switzerland
Andrei, A. H. (författare)
OV UFRJ BR, Ladeira Pedro Antonio 43, BR-20080090 Rio De Janeiro, RJ, Brazil;Univ PSL, SYRTE, Observ Paris, CNRS,Sorbonne Univ,LNE, 61 Av Observ, F-75014 Paris, France;ON MCTI BR, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil
Anglada Varela, E. (författare)
ATG Europe ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Telespazio Vega UK Ltd ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Barache, C. (författare)
Univ PSL, SYRTE, Observ Paris, CNRS,Sorbonne Univ,LNE, 61 Av Observ, F-75014 Paris, France
Barata, C. (författare)
Univ Lisbon, CENTRA, FCUL, Edif C8, P-1749016 Lisbon, Portugal
Barbato, D. (författare)
INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy;Univ Turin, Dipartimento Fis, Via Pietro Giuria 1, I-10125 Turin, Italy
Uppsala universitet,Teoretisk astrofysik,Observationell astrofysik
Esquej, P. (författare)
RHEA ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Bontemps, G. Eynard (författare)
CNES Ctr Spatial Toulouse, 18 Av Edouard Belin, F-31401 Toulouse 9, France
Fabre, C. (författare)
ATOS CNES Ctr Spatial Toulouse, 18 Av Edouard Belin, F-31401 Toulouse 9, France
Fabrizio, M. (författare)
Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy;INAF Osservatorio Astron Roma, Via Frascati 33,00078 Monte Porzio Catone, I-00040 Rome, Italy
Faigler, S. (författare)
Tel Aviv Univ, Sch Phys & Astron, IL-6997801 Tel Aviv, Israel
Falcao, A. J. (författare)
UNINOVA CTS, Campus FCT UNL, P-2829516 Caparica, Portugal
INAF Osservatorio Astrofis Torino, Via Osservatorio 20, I-10025 Pino Torinese, TO, Italy
Gilmore, G. (författare)
Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
Girona, S. (författare)
Barcelona Supercomp Ctr, Ctr Nacl Super Computac, C Jordi Girona 29,Ed Nexus 2, Barcelona 08034, Spain
Giuffrida, G. (författare)
Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy;INAF Osservatorio Astron Roma, Via Frascati 33,00078 Monte Porzio Catone, I-00040 Rome, Italy
SRON Netherlands Inst Space Res, SRON, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands;Radboud Univ Nijmegen, Dept Astrophysics IMAPP, POB 9010, NL-6500 GL Nijmegen, Netherlands
Juhasz, A. L. (författare)
Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, Budapest, Hungary;Eotvos Lorand Univ, Egyet Ter 1-3, H-1053 Budapest, Hungary
Univ Ljubljana, Fac Math & Phys, Jadranska Ulica 19, Ljubljana 1000, Slovenia;Villanova Univ, Dept Astrophys & Planetary Sci, 800 E Lancaster Av, Villanova, PA 19085 USA
Kohley, R. (författare)
European Space Astron Ctr ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Liverpool John Moores Univ, Astrophys Res Inst, 146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England
Marconi, M. (författare)
INAF Osservatorio Astron Capodimonte, Via Moiariello 16, I-80131 Naples, Italy
Marinoni, S. (författare)
Space Sci Data Ctr ASI, Via Politecn SNC, I-00133 Rome, Italy;INAF Osservatorio Astron Roma, Via Frascati 33,00078 Monte Porzio Catone, I-00040 Rome, Italy
Marschalko, G. (författare)
Baja Observ Univ Szeged, Szeged Ut III-70, H-6500 Baja, Hungary;Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, Budapest, Hungary
Marshall, D. J. (författare)
Univ Paris Diderot, Lab AIM, IRFU Serv Astrophys, CEA DSM,CNRS,CEA Saclay, Bat 709, F-91191 Gif Sur Yvette, France
Martino, M. (författare)
ALTEC Spa, Corso Marche 79, I-10146 Turin, Italy
Marton, G. (författare)
Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, Budapest, Hungary
Mary, N. (författare)
Thales Serv CNES Ctr Spatial Toulouse, 18 Av Edouard Belin, F-31401 Toulouse 09, France
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA;European Space Astron Ctr ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Salgado, J. (författare)
QUASAR Sci Resources ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Salguero, E. (författare)
ATG Europe ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain
Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, Budapest, Hungary
Szegedi-Elek, E. (författare)
Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, Budapest, Hungary
Tapiador, D. (författare)
INSA ESA ESAC, Camino Bajo Castillo S-N, Madrid 28692, Spain;Univ Complutense Madrid, Dept Arquitectura Computadores & Automat, Fac Informat, C Prof Jose Garcia Santesmases S-N, Madrid 3, Spain
Taris, F. (författare)
Univ PSL, SYRTE, Observ Paris, CNRS,Sorbonne Univ,LNE, 61 Av Observ, F-75014 Paris, France
Tauran, G. (författare)
Thales Serv CNES Ctr Spatial Toulouse, 18 Av Edouard Belin, F-31401 Toulouse 09, France
Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
Zerjal, M. (författare)
Univ Ljubljana, Fac Math & Phys, Jadranska Ulica 19, Ljubljana 1000, Slovenia;Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia
Ziaeepour, H. (författare)
Univ Bourgogne Franche Comte, OSU THETA Franche Comte Bourgogne, Inst UTINAM UMR6213, F-25000 Besancon, France
Zorec, J. (författare)
CNRS, UMR 7095, Inst Astrophys Paris, 98 Bis Bd, F-75014 Paris, France;Sorbonne Univ, Univ Paris 06, UPMC, F-75014 Paris, France
Context. The second Gaia data release (Gaia DR2) contains high-precision positions, parallaxes, and proper motions for 1.3 billion sources as well as line-of-sight velocities for 7.2 million stars brighter than G(RVS) = 12 mag. Both samples provide a full sky coverage. Aims. To illustrate the potential of Gaia DR2, we provide a first look at the kinematics of the Milky Way disc, within a radius of several kiloparsecs around the Sun. Methods. We benefit for the first time from a sample of 6.4 million F-G-K stars with full 6D phase-space coordinates, precise parallaxes (sigma((omega) over bar)/(omega) over bar <= 20%), and precise Galactic cylindrical velocities (median uncertainties of 0.9-1.4 km s(-1) and 20% of the stars with uncertainties smaller than 1 km s(-1) on all three components). From this sample, we extracted a sub-sample of 3.2 million giant stars to map the velocity field of the Galactic disc from similar to 5 kpc to similar to 13 kpc from the Galactic centre and up to 2 kpc above and below the plane. We also study the distribution of 0.3 million solar neighbourhood stars (r < 200 pc), with median velocity uncertainties of 0.4 km s(-1), in velocity space and use the full sample to examine how the over-densities evolve in more distant regions. Results. Gaia DR2 allows us to draw 3D maps of the Galactocentric median velocities and velocity dispersions with unprecedented accuracy, precision, and spatial resolution. The maps show the complexity and richness of the velocity field of the galactic disc. We observe streaming motions in all the components of the velocities as well as patterns in the velocity dispersions. For example, we confirm the previously reported negative and positive galactocentric radial velocity gradients in the inner and outer disc, respectively. Here, we see them as part of a non-axisymmetric kinematic oscillation, and we map its azimuthal and vertical behaviour. We also witness a new global arrangement of stars in the velocity plane of the solar neighbourhood and in distant regions in which stars are organised in thin substructures with the shape of circular arches that are oriented approximately along the horizontal direction in the U - V plane. Moreover, in distant regions, we see variations in the velocity substructures more clearly than ever before, in particular, variations in the velocity of the Hercules stream. Conclusions. Gaia DR2 provides the largest existing full 6D phase-space coordinates catalogue. It also vastly increases the number of available distances and transverse velocities with respect to Gaia DR1. Gaia DR2 offers a great wealth of information on the Milky Way and reveals clear non-axisymmetric kinematic signatures within the Galactic disc, for instance. It is now up to the astronomical community to explore its full potential.