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Gaia Data Release 2. Mapping the Milky Way disc kinematics

Gaia Collaboration; Katz, D.; Antoja, T.; Romero-Gómez, M.; Drimmel, R.; Reylé, C.; Seabroke, G. M.; Soubiran, C.; Babusiaux, C.; Di Matteo, P. et al.
Gaia Data Release 2. Mapping the Milky Way disc kinematics // Astronomy & astrophysics (Berlin), 616 (2018), A11, 40 doi:10.1051/0004-6361/201832865 (međunarodna recenzija, članak, znanstveni)

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Naslov
Gaia Data Release 2. Mapping the Milky Way disc kinematics
(Gaia Data Release 2)

Autori
Gaia Collaboration ; Katz, D. ; Antoja, T. ; Romero-Gómez, M. ; Drimmel, R. ; Reylé, C. ; Seabroke, G. M. ; Soubiran, C. ; Babusiaux, C. ; Di Matteo, P. ; Figueras, F. ; Poggio, E. ; Robin, A. C. ; Evans, D. W. ; Brown, A. G. A. ; Vallenari, A. ; Prusti, T. ; de Bruijne, J. H. J. ; Bailer-Jones, C. A. L. ; Biermann, M. ; Eyer, L. ; Jansen, F. ; Jordi, C. ; Klioner, S. A. ; Lammers, U. ; Lindegren, L. ; Luri, X. ; Mignard, F. ; Panem, C. ; Pourbaix, D. ; Randich, S. ; Sartoretti, P. ; Siddiqui, H. I. ; van Leeuwen, F. ; Walton, N. A. ; Arenou, F. ; Bastian, U. ; Cropper, M. ; Lattanzi, M. G. ; Bakker, J. ; Cacciari, C. ; Casta n, 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. ; Tanga, P. ; Thévenin, 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. ; Fernández-Hernández, J. ; Fouesneau, M. ; Frémat, Y. ; Galluccio, L. ; García-Torres, M. ; González-Núñez, J. ; González-Vidal, J. J. ; Gosset, E. ; Guy, L. P. ; Halbwachs, J.-L. ; Hambly, N. C. ; Harrison, D. L. ; Hernández, 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. ; Löffler, W. ; Manteiga, M. ; Marrese, P. M. ; Martín-Fleitas, J. M. ; Moitinho, A. ; Mora, A. ; Muinonen, K. ; Osinde, J. ; Pancino, E. ; Pauwels, T. ; Petit, J.-M. ; Recio-Blanco, A. ; Richards, P. J. ; Rimoldini, L. ; Sarro, L. M. ; Siopis, C. ; Smith, M. ; Sozzetti, A. ; Süveges, M. ; Torra, J. ; van Reeven, W. ; Abbas, U. ; Abreu Aramburu, A. ; Accart, S. ; Aerts, C. ; Altavilla, G. ; Álvarez, 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-Núñez, L. ; Balm, P. ; Barache, C. ; Barata, C. ; Barbato, D. ; Barblan, F. ; Barklem, P. S. ; Barrado, D. ; Barros, M. ; Barstow, M. A. ; Bartholomé Muñoz, L. ; Bassilana, J.-L. ; Becciani, U. ; Bellazzini, M. ; Berihuete, A. ; Bertone, S. ; Bianchi, L. ; Bienaymé, O. ; Blanco-Cuaresma, S. ; Boch, T. ; Boeche, C. ; Bombrun, A. ; Borrachero, R. ; Bossini, D. ; Bouquillon, S. ; Bourda, G. ; Bragaglia, A. ; Bramante, L. ; Breddels, M. A. ; Bressan, A. ; Brouillet, N. ; Brüsemeister, 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 Souza, R. ; de Torres, A. ; Debosscher, J. ; del Pozo, E. ; Delbo, M. ; Delgado, A. ; Pagano, I. ; Pailler, F. ; Palacin, H. ; Palaversa, L. ; et al.

Izvornik
Astronomy & astrophysics (Berlin) (0004-6361) 616 (2018); A11, 40

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Galaxy: kinematics and dynamics – Galaxy: disk – solar neighborhood

Sažetak
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 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

Profili:

Avatar Url Lovro Palaversa (autor)

Poveznice na cjeloviti tekst rada:

doi

Citiraj ovu publikaciju:

Gaia Collaboration; Katz, D.; Antoja, T.; Romero-Gómez, M.; Drimmel, R.; Reylé, C.; Seabroke, G. M.; Soubiran, C.; Babusiaux, C.; Di Matteo, P. et al.
Gaia Data Release 2. Mapping the Milky Way disc kinematics // Astronomy & astrophysics (Berlin), 616 (2018), A11, 40 doi:10.1051/0004-6361/201832865 (međunarodna recenzija, članak, znanstveni)
Gaia Collaboration, Katz, D., Antoja, T., Romero-Gómez, M., Drimmel, R., Reylé, C., Seabroke, G., Soubiran, C., Babusiaux, C. & Di Matteo, P. (2018) Gaia Data Release 2. Mapping the Milky Way disc kinematics. Astronomy & astrophysics (Berlin), 616, A11, 40 doi:10.1051/0004-6361/201832865.
@article{article, author = {Katz, D. and Antoja, T. and Romero-G\'{o}mez, M. and Drimmel, R. and Reyl\'{e}, C. and Seabroke, G. M. and Soubiran, C. and Babusiaux, C. and Di Matteo, P. and Figueras, F. and Poggio, E. and Robin, A. C. and Evans, D. W. and Brown, A. G. A. and Vallenari, A. and Prusti, T. and de Bruijne, J. H. J. and Bailer-Jones, C. A. L. and Biermann, M. and Eyer, L. and Jansen, F. and Jordi, C. and Klioner, S. A. and Lammers, U. and Lindegren, L. and Luri, X. and Mignard, F. and Panem, C. and Pourbaix, D. and Randich, S. and Sartoretti, P. and Siddiqui, H. I. and van Leeuwen, F. and Walton, N. A. and Arenou, F. and Bastian, U. and Cropper, M. and Lattanzi, M. G. and Bakker, J. and Cacciari, C. and Casta n, J. and Chaoul, L. and Cheek, N. and De Angeli, F. and Fabricius, C. and Guerra, R. and Holl, B. and Masana, E. and Messineo, R. and Mowlavi, N. and Nienartowicz, K. and Panuzzo, P. and Portell, J. and Riello, M. and Tanga, P. and Th\'{e}venin, F. and Gracia-Abril, G. and Comoretto, G. and Garcia-Reinaldos, M. and Teyssier, D. and Altmann, M. and Andrae, R. and Audard, M. and Bellas-Velidis, I. and Benson, K. and Berthier, J. and Blomme, R. and Burgess, P. and Busso, G. and Carry, B. and Cellino, A. and Clementini, G. and Clotet, M. and Creevey, O. and Davidson, M. and De Ridder, J. and Delchambre, L. and Dell’Oro, A. and Ducourant, C. and Fern\'{a}ndez-Hern\'{a}ndez, J. and Fouesneau, M. and Fr\'{e}mat, Y. and Galluccio, L. and Garc\'{\i}a-Torres, M. and Gonz\'{a}lez-N\'{u}\~{n}ez, J. and Gonz\'{a}lez-Vidal, J. J. and Gosset, E. and Guy, L. P. and Halbwachs, J.-L. and Hambly, N. C. and Harrison, D. L. and Hern\'{a}ndez, J. and Hestroffer, D. and Hodgkin, S. T. and Hutton, A. and Jasniewicz, G. and Jean-Antoine-Piccolo, A. and Jordan, S. and Korn, A. J. and Krone-Martins, A. and Lanzafame, A. C. and Lebzelter, T. and L\"{o}ffler, W. and Manteiga, M. and Marrese, P. M. and Mart\'{\i}n-Fleitas, J. M. and Moitinho, A. and Mora, A. and Muinonen, K. and Osinde, J. and Pancino, E. and Pauwels, T. and Petit, J.-M. and Recio-Blanco, A. and Richards, P. J. and Rimoldini, L. and Sarro, L. M. and Siopis, C. and Smith, M. and Sozzetti, A. and S\"{u}veges, M. and Torra, J. and van Reeven, W. and Abbas, U. and Abreu Aramburu, A. and Accart, S. and Aerts, C. and Altavilla, G. and \'{A}lvarez, M. A. and Alvarez, R. and Alves, J. and Anderson, R. I. and Andrei, A. H. and Anglada Varela, E. and Antiche, E. and Arcay, B. and Astraatmadja, T. L. and Bach, N. and Baker, S. G. and Balaguer-N\'{u}\~{n}ez, L. and Balm, P. and Barache, C. and Barata, C. and Barbato, D. and Barblan, F. and Barklem, P. S. and Barrado, D. and Barros, M. and Barstow, M. A. and Bartholom\'{e} Mu\~{n}oz, L. and Bassilana, J.-L. and Becciani, U. and Bellazzini, M. and Berihuete, A. and Bertone, S. and Bianchi, L. and Bienaym\'{e}, O. and Blanco-Cuaresma, S. and Boch, T. and Boeche, C. and Bombrun, A. and Borrachero, R. and Bossini, D. and Bouquillon, S. and Bourda, G. and Bragaglia, A. and Bramante, L. and Breddels, M. A. and Bressan, A. and Brouillet, N. and Br\"{u}semeister, T. and Brugaletta, E. and Bucciarelli, B. and Burlacu, A. and Busonero, D. and Butkevich, A. G. and Buzzi, R. and Caffau, E. and Cancelliere, R. and Cannizzaro, G. and Cantat-Gaudin, T. and Carballo, R. and Carlucci, T. and Carrasco, J. M. and Casamiquela, L. and Castellani, M. and Castro-Ginard, A. and Charlot, P. and Chemin, L. and Chiavassa, A. and Cocozza, G. and Costigan, G. and Cowell, S. and Crifo, F. and Crosta, M. and Crowley, C. and Cuypers†, J. and Dafonte, C. and Damerdji, Y. and Dapergolas, A. and David, P. and David, M. and de Laverny, P. and De Luise, F. and De March, R. and de Souza, R. and de Torres, A. and Debosscher, J. and del Pozo, E. and Delbo, M. and Delgado, A. and Pagano, I. and Pailler, F. and Palacin, H. and Palaversa, L.}, year = {2018}, pages = {40}, DOI = {10.1051/0004-6361/201832865}, chapter = {A11}, keywords = {Galaxy: kinematics and dynamics – Galaxy: disk – solar neighborhood}, journal = {Astronomy and astrophysics (Berlin)}, doi = {10.1051/0004-6361/201832865}, volume = {616}, issn = {0004-6361}, title = {Gaia Data Release 2. Mapping the Milky Way disc kinematics}, keyword = {Galaxy: kinematics and dynamics – Galaxy: disk – solar neighborhood}, chapternumber = {A11} }
@article{article, author = {Katz, D. and Antoja, T. and Romero-G\'{o}mez, M. and Drimmel, R. and Reyl\'{e}, C. and Seabroke, G. M. and Soubiran, C. and Babusiaux, C. and Di Matteo, P. and Figueras, F. and Poggio, E. and Robin, A. C. and Evans, D. W. and Brown, A. G. A. and Vallenari, A. and Prusti, T. and de Bruijne, J. H. J. and Bailer-Jones, C. A. L. and Biermann, M. and Eyer, L. and Jansen, F. and Jordi, C. and Klioner, S. A. and Lammers, U. and Lindegren, L. and Luri, X. and Mignard, F. and Panem, C. and Pourbaix, D. and Randich, S. and Sartoretti, P. and Siddiqui, H. I. and van Leeuwen, F. and Walton, N. A. and Arenou, F. and Bastian, U. and Cropper, M. and Lattanzi, M. G. and Bakker, J. and Cacciari, C. and Casta n, J. and Chaoul, L. and Cheek, N. and De Angeli, F. and Fabricius, C. and Guerra, R. and Holl, B. and Masana, E. and Messineo, R. and Mowlavi, N. and Nienartowicz, K. and Panuzzo, P. and Portell, J. and Riello, M. and Tanga, P. and Th\'{e}venin, F. and Gracia-Abril, G. and Comoretto, G. and Garcia-Reinaldos, M. and Teyssier, D. and Altmann, M. and Andrae, R. and Audard, M. and Bellas-Velidis, I. and Benson, K. and Berthier, J. and Blomme, R. and Burgess, P. and Busso, G. and Carry, B. and Cellino, A. and Clementini, G. and Clotet, M. and Creevey, O. and Davidson, M. and De Ridder, J. and Delchambre, L. and Dell’Oro, A. and Ducourant, C. and Fern\'{a}ndez-Hern\'{a}ndez, J. and Fouesneau, M. and Fr\'{e}mat, Y. and Galluccio, L. and Garc\'{\i}a-Torres, M. and Gonz\'{a}lez-N\'{u}\~{n}ez, J. and Gonz\'{a}lez-Vidal, J. J. and Gosset, E. and Guy, L. P. and Halbwachs, J.-L. and Hambly, N. C. and Harrison, D. L. and Hern\'{a}ndez, J. and Hestroffer, D. and Hodgkin, S. T. and Hutton, A. and Jasniewicz, G. and Jean-Antoine-Piccolo, A. and Jordan, S. and Korn, A. J. and Krone-Martins, A. and Lanzafame, A. C. and Lebzelter, T. and L\"{o}ffler, W. and Manteiga, M. and Marrese, P. M. and Mart\'{\i}n-Fleitas, J. M. and Moitinho, A. and Mora, A. and Muinonen, K. and Osinde, J. and Pancino, E. and Pauwels, T. and Petit, J.-M. and Recio-Blanco, A. and Richards, P. J. and Rimoldini, L. and Sarro, L. M. and Siopis, C. and Smith, M. and Sozzetti, A. and S\"{u}veges, M. and Torra, J. and van Reeven, W. and Abbas, U. and Abreu Aramburu, A. and Accart, S. and Aerts, C. and Altavilla, G. and \'{A}lvarez, M. A. and Alvarez, R. and Alves, J. and Anderson, R. I. and Andrei, A. H. and Anglada Varela, E. and Antiche, E. and Arcay, B. and Astraatmadja, T. L. and Bach, N. and Baker, S. G. and Balaguer-N\'{u}\~{n}ez, L. and Balm, P. and Barache, C. and Barata, C. and Barbato, D. and Barblan, F. and Barklem, P. S. and Barrado, D. and Barros, M. and Barstow, M. A. and Bartholom\'{e} Mu\~{n}oz, L. and Bassilana, J.-L. and Becciani, U. and Bellazzini, M. and Berihuete, A. and Bertone, S. and Bianchi, L. and Bienaym\'{e}, O. and Blanco-Cuaresma, S. and Boch, T. and Boeche, C. and Bombrun, A. and Borrachero, R. and Bossini, D. and Bouquillon, S. and Bourda, G. and Bragaglia, A. and Bramante, L. and Breddels, M. A. and Bressan, A. and Brouillet, N. and Br\"{u}semeister, T. and Brugaletta, E. and Bucciarelli, B. and Burlacu, A. and Busonero, D. and Butkevich, A. G. and Buzzi, R. and Caffau, E. and Cancelliere, R. and Cannizzaro, G. and Cantat-Gaudin, T. and Carballo, R. and Carlucci, T. and Carrasco, J. M. and Casamiquela, L. and Castellani, M. and Castro-Ginard, A. and Charlot, P. and Chemin, L. and Chiavassa, A. and Cocozza, G. and Costigan, G. and Cowell, S. and Crifo, F. and Crosta, M. and Crowley, C. and Cuypers†, J. and Dafonte, C. and Damerdji, Y. and Dapergolas, A. and David, P. and David, M. and de Laverny, P. and De Luise, F. and De March, R. and de Souza, R. and de Torres, A. and Debosscher, J. and del Pozo, E. and Delbo, M. and Delgado, A. and Pagano, I. and Pailler, F. and Palacin, H. and Palaversa, L.}, year = {2018}, pages = {40}, DOI = {10.1051/0004-6361/201832865}, chapter = {A11}, keywords = {Galaxy: kinematics and dynamics – Galaxy: disk – solar neighborhood}, journal = {Astronomy and astrophysics (Berlin)}, doi = {10.1051/0004-6361/201832865}, volume = {616}, issn = {0004-6361}, title = {Gaia Data Release 2}, keyword = {Galaxy: kinematics and dynamics – Galaxy: disk – solar neighborhood}, chapternumber = {A11} }

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  • Current Contents Connect (CCC)
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    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
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