Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12666/671
Title: Gaia Early Data Release 3 Acceleration of the Solar System from Gaia astrometry
Authors: Klioner, S. A.
Mignard, F.
Lindegren, L.
Bastian, U.
McMillan, P. J.
Hernández, J.
Hobbs, D.
Ramos Lerate, M.
Biermann, M.
Bombrun, A.
De Torres, A.
Ajaj, M.
Sordo, R.
Reylé, C.
Cancelliere, R.
Pawlak, M.
Jean Antonie Piccolo, A.
Cánovas, H.
Fabre, C.
Mazeh, T.
Baker, S. G.
Guiraud, J.
Dell´Oro, A.
Michalik, D.
Van Leewen, M.
Muñoz, D.
Marocco, F.
Carrasco, J. M.
Osborne, P.
Messineo, M.
Wevers, T.
Nicolas, C.
Solano, E.
Smart, R. L.
Guerra, R.
Chaoul, L.
Balog, Z.
Viala, Y.
Fraile, E.
Mann, R. G.
Juaristi Campillo, J.
Mor, R.
Lanzafame, A. C.
Lindstrom, H. E. P.
Mora, A.
Molina, D.
Van Reeven, W.
Roegiers, T.
Riello, M.
Cellino, A.
De Bruijne, J. H. J.
Delchambre, L.
Piersimoni, A. M.
Tonello, N.
Hatzidimitriou, D.
Jonker, P. G.
Franke, F.
Raiteri, C. M.
Guy, L. P.
Pulone, L.
Pagano, I.
Audard, M.
Guerrier, A.
Vaillant, M.
González Vidal, J. J.
Hidalgo, S. L.
Moitinho, A.
Marrese, P. M.
Pauwels, T.
Balbinot, E.
De March, R.
Castañeda, J.
Vallenari, A.
Accart, S.
Souami, D.
Holland, G.
Schultheis, M.
Fouron, C.
Managau, S.
Robin, A. C.
Butkevich, A. G.
Sahlmann, J.
Rixon, G.
Garabato, D.
Boch, T.
Portell, J.
Jordi, C.
Heiter, U.
Lister, T. A.
Marshall, D. J.
Palicio, P. A.
Morel, T.
Sadowski, G.
Bianchi, L.
Peñalosa Ester, X.
Bressan, A.
Breedt, E.
David, P.
Baines, D.
Pailler, F.
Di Matteo, P.
Balaguer Núñez, L.
Voutsinas, S.
Haywood, M.
Szabados, L.
Altavilla, G.
Helmi, A.
Mastrobuono Battisti, A.
Samaras, N.
Fabrizio, M.
Bramante, L.
Bailer Jones, C. A. L.
De Teodoro, P.
Siebert, A.
Royer, F.
Jasniewicz, G.
Cooper, W. J.
Lammers, U.
Gosset, E.
Alves, J.
Seabroke, G. M.
Aerts, C.
Karbevska, L.
Fernique, P.
Galluccio, L.
Molnár, L.
Roelens, M.
Plum, G.
Segovia, J. C.
Castellani, M.
Chiavassa, A.
Sarasso, M.
Babusiaux, C.
Dapergolas, A.
Crowley, C.
Bertone, S.
Marchal, O.
Bouquillon, S.
Tauran, G.
Carry, B.
Plachy, E.
Montegriffo, P.
Vanel, O.
Palaversa, L.
Turon, C.
Spoto, F.
Esquej, P.
Aguado, J. J.
Davidson, M.
Osinde, J.
Chemin, L.
Charlot, P.
Cowell, S.
Fedorets, G.
Livanou, E.
Hilger, T.
Lorca, A.
Delgado, A.
Thévenin, F.
Penttilä, A.
Pourbaix, D.
Robin, C.
Dafonte, C.
Hutton, A.
De Angeli, F.
Wyrzykowski, L.
Morbidelli, R.
Giacobbe, P.
Barache, C.
Pancino, E.
Ripepi, V.
Rybicki, K. A.
Steele, I. A.
Semeux, D.
Bakker, J.
Gavras, P.
Szegedi Elek, E.
González Santamaria, I.
Gómez, A.
Licata, E.
Anglada Varela, E.
Marinoni, S.
Faigler, S.
García Reinaldos, M.
Sartoretti, P.
Bellas Velidis, I.
Diakite, S.
Panahi, A.
Salguero, E.
Fouesneau, M.
Giuffrida, G.
Rybizki, J.
Madrero Pardo, P.
Panuzzo, P.
Van Leeuwen, F.
Pineau, F. X.
Le Campion, J. F.
Jordan, S.
Burlacu, A.
Dolding, C.
Delgado, H. E.
Poretti, E.
Millar, N. R.
Brown, A. G. A.
Sciacca, E.
Zhao, H.
Thuillot, W.
Mowlavi, N.
Jansen, F.
Kochoska, A.
Gerlach, E.
Lecoeur Taibi, I.
Leccia, S.
Garofalo, A.
Prusti, T.
Girona, S.
Blomme, R.
Bernet, M.
Teixeira, R.
Segol, M.
Drimmel, R.
Clementini, G.
Teyssier, D.
Massari, D.
Delisle, J. B.
Bossini, D.
Souchay, J.
Khanna, S.
Kervella, P.
Lebreton, Y.
Riva, A.
Jevardat de Fombelle, G.
Castro Sampol, P.
Marchant, J. M.
Steidelmüller, H.
Taris, F.
Richards, P. J.
Yvard, P.
Leclerc, N.
Muinonen, K.
Haigron, R.
Ségransan, D.
Muraveva, T.
Fienga, A.
Cornez, T.
Weiler, M.
Zwitter, T.
Altmann, M.
Nienartowicz, K.
Utrilla, E.
Benson, K.
Ordénovic, C.
Noval, L.
Regibo, S.
Eappachen, D.
Rowell, N.
Messina, S.
Brouillet, N.
Geyer, R.
Bartolomé, S.
Süveges, M.
Fabricius, C.
Abreu Aramburu, A.
Musella, I.
David, M.
Robichon, N.
Antoja, T.
Ulla, A.
Taylor, M. B.
Racero, E.
Granvik, M.
Panem, C.
Marconi, M.
Katz, D.
Sanna, N.
Löffler, W.
Masana, E.
Harrison, D. L.
Busso, G.
Álvarez Cid Fuentes, J.
Prsa, A.
Holl, B.
Re Fiorentin, P.
Rambaux, N.
Mulone, A. F.
Manteiga, M.
Murphy, C. P.
Baudesson-Stella, A.
García Torres, M.
Burgess, P. W.
Siopis, C.
Blanco Cuaresma, S.
Barbato, D.
Salgado, J
Marcos Santos, M. M. S.
Gilmore, G.
Gracia Abril, G.
Poujoulet, E.
Soubiran, C.
Rainer, M.
Carnerero, M. I.
Julbe, F.
Rohrbasser, L.
Krone Martins, A.
Berthier, J.
Crosta, M.
Hambly, N. C.
Ramos, P.
Comoretto, G.
Busonero, D.
Siltala, L.
Mints, A.
Le Fustec, Y.
González Núñez, J.
Hodgkin, S. T.
Barros, M.
Anderson, R. I.
De Souza, R.
Bassilana, J. L.
Solitro, F.
Lattanzi, M. G.
Martín Fleitas, J. M.
Zurbach, C.
Sánchez Giménez, V.
González Santamaria, I.
Janßen, Katja
Fragkoudi, F.
Andrae, R.
Abbas, U.
Del Pozo, E.
Liao, S.
Yoldas, A.
Enke, H.
De Ridder, J.
Brugaletta, E.
Unger, N.
Pagani, C.
Recio Blanco, A.
Romero Gómez, M.
Smith, M.
Castro Ginard, A.
Álvarez, M. A.
Caffau, E.
Bellazzini, M.
Di Stefano, E.
Torra, J.
Carballo, R.
Vicente, D.
Vecchiato, A.
Cropper, M.
Slezak, E.
Gai, M.
Morris, D.
Stephenson, C. A.
De Laverny, P.
Eyer, L.
Figueras, F.
Ducourant, C.
Arenou, F.
Randich, S.
Torra, F.
Rimoldini, L.
Van Dillen, E.
Huckle, H. E.
Poggio, E.
Zorec, J.
Casamiquela, L.
Bauchet, N.
Lebzelter, T.
Buzzi, R.
Kordopatis, G.
Gutiérrez Sánchez, R.
Riclet, F.
Santoveña, R.
Ragaini, S.
Bucciarelli, B.
Cantat Gaudin, T.
Evans, D. W.
Creevey, O. L.
Luri, X.
Tanga, P.
Sozzetti, A.
Sagristà Sellés, A.
Hestroffer, D.
Frémat, Y.
Orrù, G.
Carlucci, T.
Molinaro, R.
Barstow, M. A.
Del Peloso, E. F.
Walton, N. A.
Halbwachs, J. L.
Masip, A.
Lobel, A.
Becciani, U.
Damerdji, Y.
Spagna, A.
Crifo, F.
Zucker, S.
De Luise, F.
Diener, C.
Hauser, M.
García Gutierrez, A.
Martin Polo, L.
Cheek, N.
Hladczuk, N.
García Lario, P.
Fernández Hernández, J.
Sarro, L. M.
Roux, W.
Siddiqui, H. I.
Keywords: Astrometry;Proper motions;Reference systems;Galaxy: kinematics and dynamics;Methods: data analysis
Issue Date: 28-Apr-2021
Publisher: EDP Sciences
DOI: 10.1051/0004-6361/202039734
Published version: https://www.aanda.org/articles/aa/full_html/2021/05/aa39734-20/aa39734-20.html
Citation: Astronomy and Astrophysics 649: A9(2921)
Abstract: Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality five-parameter astrometric solutions. Aims. The proper motions of QSO-like sources are used to reveal a systematic pattern due to the acceleration of the solar systembarycentre with respect to the rest frame of the Universe. Apart from being an important scientific result by itself, the acceleration measured in this way is a good quality indicator of the Gaia astrometric solution. Methods. Theeffect of the acceleration was obtained as a part of the general expansion of the vector field of proper motions in vector spherical harmonics (VSH). Various versions of the VSH fit and various subsets of the sources were tried and compared to get the most consistent result and a realistic estimate of its uncertainty. Additional tests with the Gaia astrometric solution were used to get a better idea of the possible systematic errors in the estimate. Results. Our best estimate of the acceleration based on Gaia EDR3 is (2.32 ± 0.16) × 10−10 m s−2 (or 7.33 ±0.51 km s−1 Myr−1) towards α = 269.1° ± 5.4°, δ = −31.6° ± 4.1°, corresponding to a proper motion amplitude of 5.05 ±0.35 μas yr−1. This is in good agreement with the acceleration expected from current models of the Galactic gravitational potential. We expect that future Gaia data releases will provide estimates of the acceleration with uncertainties substantially below 0.1 μas yr−1.
URI: http://hdl.handle.net/20.500.12666/671
E-ISSN: 1432-0746
ISSN: 0004-6361
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