Authors
David Katz, Teresa Antoja, Manuel Romero-Gómez, Ronald Drimmel, Céline Reylé, George M Seabroke, C Soubiran, Carine Babusiaux, P Di Matteo, F Figueras, Eloisa Poggio, AC Robin, Dafydd Wyn Evans, Anthony GA Brown, Antonella Vallenari, Timo Prusti, Jos HJ De Bruijne, Coryn AL Bailer-Jones, Michael Biermann, L Eyer, F Jansen, C Jordi, SA Klioner, U Lammers, L Lindegren, X Luri, F Mignard, C Panem, D Pourbaix, S Randich, P Sartoretti, HI Siddiqui, F Van Leeuwen, NA Walton, F Arenou, U Bastian, M Cropper, MG Lattanzi, J Bakker, C Cacciari, L Chaoul, N Cheek, F De Angeli, C Fabricius, R Guerra, B Holl, E Masana, R Messineo, N Mowlavi, K Nienartowicz, P Panuzzo, J Portell, M Riello, P Tanga, F Thévenin, G Gracia-Abril, G Comoretto, M Garcia-Reinaldos, D Teyssier, M Altmann, R Andrae, M Audard, I Bellas-Velidis, K Benson, J Berthier, R Blomme, P Burgess, G Busso, B Carry, A Cellino, G Clementini, M Clotet, O Creevey, M Davidson, J De Ridder, Ludovic Delchambre, A Dell’Oro, C Ducourant, J Fernández-Hernández, M Fouesneau, Y Frémat, L Galluccio, M García-Torres, J González-Núñez, JJ González-Vidal, Eric Gosset, LP Guy, J-L Halbwachs, NC Hambly, DL Harrison, J Hernández, D Hestroffer, ST Hodgkin, A Hutton, Gérard Jasniewicz, A Jean-Antoine-Piccolo, S Jordan, AJ Korn, A Krone-Martins, AC Lanzafame, T Lebzelter, W Löffler, M Manteiga, PM Marrese, JM Martín-Fleitas, A Moitinho, A Mora, K Muinonen, J Osinde, E Pancino, T Pauwels, J-M Petit, A Recio-Blanco, PJ Richards, L Rimoldini, LM Sarro, C Siopis, M Smith, A Sozzetti, M Süveges, J Torra, W van Reeven, U Abbas, A Abreu Aramburu, S Accart, C Aerts, G Altavilla, MA Álvarez, R Alvarez, J Alves, RI Anderson, AH Andrei, E Anglada Varela, E Antiche, B Arcay, TL Astraatmadja, N Bach, SG Baker, L Balaguer-Núñez, P Balm, C Barache, C Barata, D Barbato, F Barblan, PS Barklem, D Barrado, M Barros, MA Barstow, L Bartholomé Muñoz, J-L Bassilana
Publication date
2018/8/1
Journal
Astronomy & astrophysics
Volume
616
Pages
A11
Publisher
EDP sciences
Description
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 GRVS = 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 (σϖ∕ϖ ≤ 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 ~5 kpc to ~13 kpc from the Galactic centre and up to 2 kpc …
Scholar articles
D Katz, T Antoja, M Romero-Gómez, R Drimmel… - Astronomy & astrophysics, 2018