A
Anthony G. A. Brown
Researcher at Leiden University
Publications - 243
Citations - 32567
Anthony G. A. Brown is an academic researcher from Leiden University. The author has contributed to research in topics: Stars & Astrometry. The author has an hindex of 50, co-authored 234 publications receiving 25984 citations. Previous affiliations of Anthony G. A. Brown include University of Manchester & Australia Telescope National Facility.
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Journal ArticleDOI
Gaia data release 1, the photometric data
F.E. van Leeuwen,D. W. Evans,F. De Angeli,Carme Jordi,G. Busso,Carla Cacciari,M. Riello,Elena Pancino,G. Altavilla,Anthony G. A. Brown,Paul W. Burgess,J. M. Carrasco,G. Cocozza,S. Cowell,Michael Davidson,F. De Luise,C. Fabricius,S. Galleti,Gerry Gilmore,G. Giuffrida,Nigel Hambly,D. L. Harrison,S. T. Hodgkin,G. Holland,I. MacDonald,S. Marinoni,P. Montegrffo,P. Osborne,S. Ragaini,P. J. Richards,Nicholas Rowell,H. Voss,N. A. Walton,M. Weiler,Marco Castellani,Antonio Delgado,Erik Høg,M. van Leeuwen,N.R. Millar,C. Pagani,A. M. Piersimoni,L. Pulone,Guy Rixon,F. F. Suess,Łukasz Wyrzykowski,A. Yoldas,A. Alecu,P. M. Allan,L. Balaguer-Núñez,Martin A. Barstow,M. Bellazzini,Vasily Belokurov,Nadejda Blagorodnova,M. Bonfigli,Angela Bragaglia,Sally Brown,P. S. Bunclark,R. Buonanno,R. Burgon,H. Campbell,Ross Collins,Nicholas Cross,C. Ducourant,A. van Elteren,Nick Evans,Luciana Federici,J. Fernández-Hernández,Francesca Figueras,Morgan Fraser,D. Fyfe,M. Gebran,A. Heyrovsky,B. Holl,Andrew D. Holland,G. Iannicola,Michael G. Irwin,Sergey E. Koposov,Alberto Krone-Martins,Robert G. Mann,P. M. Marrese,Eduard Masana,U. Munari,P. Ortiz,A. Ouzounis,C. Peltzer,Jordi Portell,A. M. Read,David Terrett,J. Torra,Scott Trager,L. Troisi,Gaetano Valentini,Antonella Vallenari,Thomas Wevers +93 more
TL;DR: In this paper, the authors present an overview of the photometric data that are part of the first Gaia data release, and the overall precision for the Gaia photometry is shown to be at the milli-magnitude level and has a clear potential to improve further in future releases.
Journal ArticleDOI
Three-dimensional motions in the Sculptor dwarf galaxy as a glimpse of a new era
Davide Massari,Maarten A. Breddels,Amina Helmi,Lorenzo Posti,Anthony G. A. Brown,Eline Tolstoy +5 more
TL;DR: In this article, the authors present precise proper motions of Sculptor's stars based on data from the Gaia mission and the Hubble Space Telescope, and they show that the stars in their sample move preferentially on radial orbits as quantified by the anisotropy parameter, which they find to be $${\boldsymbol{\beta }}}^{{\rm{M}}R} \sim 0.8{6}_{-0.83}^{+0.12}
Journal ArticleDOI
New light on the Gaia DR2 parallax zero-point : influence of the asteroseismic approach, in and beyond the Kepler field
Saniya Khan,Saniya Khan,Andrea Miglio,Andrea Miglio,Benoit Mosser,Frédéric Arenou,Kevin Belkacem,Anthony G. A. Brown,David Katz,Luca Casagrande,William J. Chaplin,William J. Chaplin,Guy R. Davies,Guy R. Davies,B. M. Rendle,B. M. Rendle,Thaíse S. Rodrigues,Diego Bossini,Tristan Cantat-Gaudin,Yvonne Elsworth,Yvonne Elsworth,Léo Girardi,Thomas S. H. North,Antonella Vallenari +23 more
TL;DR: In this paper, a new analysis of the Gaia DR2 parallax offset for nearly 3000 red-giant branch (RGB) and 2200 red clump (RC) stars observed by Kepler, as well as about 500 and 700 red giants (all either in the RGB or RC phase) selected by the K2 Galactic Archaeology Program in campaigns 3 and 6.
Journal ArticleDOI
Gaia Early Data Release 3. Structure and properties of the Magellanic Clouds
Xavier Luri,Laurent Chemin,Gisella Clementini,H. E. Delgado,Paul J. McMillan,M. Romero-Gómez,E. Balbinot,Alfred Castro-Ginard,R. Mor,Vincenzo Ripepi,L. M. Sarro,Maria-Rosa L. Cioni,C. Fabricius,A. Garofalo,Amina Helmi,Tatiana Muraveva,Anthony G. A. Brown,Antonella Vallenari,Timo Prusti,J. H. J. de Bruijne,Carine Babusiaux,Carine Babusiaux,M. Biermann,O. L. Creevey,D. W. Evans,L. Eyer,A. Hutton,F. A. Jansen,Carme Jordi,Sergei A. Klioner,Uwe Lammers,Lennart Lindegren,Francois Mignard,C. Panem,Dimitri Pourbaix,Sofia Randich,P. Sartoretti,Caroline Soubiran,N. A. Walton,Frédéric Arenou,Coryn A. L. Bailer-Jones,Ulrich Bastian,Mark Cropper,R. Drimmel,D. Katz,M. G. Lattanzi,M. G. Lattanzi,F. van Leeuwen,J. Bakker,J. Castañeda,F. De Angeli,C. Ducourant,Morgan Fouesneau,Yves Fremat,Raphael Guerra,A. Guerrier,J. Guiraud,A. Jean-Antoine Piccolo,Eduard Masana,R. Messineo,Nami Mowlavi,C. Nicolas,Krzysztof Nienartowicz,F. Pailler,P. Panuzzo,F. Riclet,W. Roux,George M. Seabroke,Rosanna Sordo,Paolo Tanga,F. Thévenin,G. Gracia-Abril,Jordi Portell,David Teyssier,Martin Altmann,Martin Altmann,Rene Andrae,I. Bellas-Velidis,Kevin Benson,Jérôme Berthier,R. Blomme,E. Brugaletta,P. Burgess,G. Busso,Benoit Carry,Alberto Cellino,N. Cheek,Yassine Damerdji,Michael Davidson,Ludovic Delchambre,Aldo Dell'Oro,J. Fernández-Hernández,Laurent Galluccio,Pedro García-Lario,M. Garcia-Reinaldos,J. González-Núñez,J. González-Núñez,Eric Gosset,R. Haigron,J. L. Halbwachs,Nigel Hambly,D. L. Harrison,Despina Hatzidimitriou,Ulrike Heiter,Jose M Hernandez,Daniel Hestroffer,Simon Hodgkin,B. Holl,K. Janßen,G. Jevardat de Fombelle,Stefan Jordan,Alberto Krone-Martins,Alberto Krone-Martins,A. C. Lanzafame,A. C. Lanzafame,W. Löffler,A. Lorca,Minia Manteiga,O. Marchal,P. M. Marrese,P. M. Marrese,André Moitinho,A. Mora,Karri Muinonen,Karri Muinonen,P. Osborne,Elena Pancino,Elena Pancino,T. Pauwels,Alejandra Recio-Blanco,P. J. Richards,M. Riello,Lorenzo Rimoldini,Annie C. Robin,T. Roegiers,Jan Rybizki,Christos Siopis,Mike Smith,Alessandro Sozzetti,Ana Ulla,E. Utrilla,M. van Leeuwen,W. van Reeven,Ummi Abbas,A. Abreu Aramburu,S. Accart,Conny Aerts,Conny Aerts,Conny Aerts,J. J. Aguado,M. Ajaj,G. Altavilla,G. Altavilla,M. A. Álvarez,J. Álvarez Cid-Fuentes,João Alves,Richard I. Anderson,E. Anglada Varela,Teresa Antoja,Marc Audard,D. Baines,S. G. Baker,L. Balaguer-Núñez,Zoltan Balog,Zoltan Balog,C. Barache,D. Barbato,D. Barbato,M. Barros,Martin A. Barstow,S. Bartolomé,J.-L. Bassilana,N. Bauchet,A. Baudesson-Stella,Ugo Becciani,Michele Bellazzini,M. Bernet,Stefano Bertone,Stefano Bertone,Stefano Bertone,Luciana Bianchi,Sergi Blanco-Cuaresma,T. Boch,Alex Bombrun,Diego Bossini,S. Bouquillon,Angela Bragaglia,L. Bramante,Elmé Breedt,Alessandro Bressan,N. Brouillet,Beatrice Bucciarelli,A. Burlacu,Deborah Busonero,A. G. Butkevich,R. Buzzi,Elisabetta Caffau,Rossella Cancelliere,Hector Canovas,Tristan Cantat-Gaudin,Ruth Carballo,T. Carlucci,M. I. Carnerero,J. M. Carrasco,Laia Casamiquela,Marco Castellani,P. Castro Sampol,L. Chaoul,Patrick Charlot,Andrea Chiavassa,Giovanni Comoretto,W. J. Cooper,W. J. Cooper,T. Cornez,S. Cowell,F. Crifo,Mariateresa Crosta,C. Crowley,Carlos Dafonte,A. Dapergolas,M. David,P. David,P. de Laverny,F. De Luise,R. De March,J. De Ridder,R. E. de Souza,P. de Teodoro,A. de Torres,E. F. del Peloso,E. del Pozo,A. Delgado,J.-B. Delisle,P. Di Matteo,S. Diakite,C. Diener,Elisa Distefano,C. Dolding,D. Eappachen,D. Eappachen,Harry Enke,P. Esquej,C. Fabre,M. Fabrizio,M. Fabrizio,Simchon Faigler,Grigori Fedorets,Grigori Fedorets,Pierre Fernique,Pierre Fernique,Agnes Fienga,Agnes Fienga,Francesca Figueras,C. Fouron,Francesca Fragkoudi,E. Fraile,Felix Franke,Mario Gai,D. Garabato,A. Garcia-Gutierrez,Miguel García-Torres,P. Gavras,E. Gerlach,R. Geyer,Paolo Giacobbe,Gerry Gilmore,S. Girona,G. Giuffrida,Ángel Gómez,I. Gonzalez-Santamaria,J. J. González-Vidal,Mikael Granvik,Mikael Granvik,R. Gutiérrez-Sánchez,Leanne P. Guy,M. Hauser,M. Haywood,Sebastian L. Hidalgo,Sebastian L. Hidalgo,Thomas Hilger,N. Hładczuk,David Hobbs,G. Holland,H. E. Huckle,Gérard Jasniewicz,Peter G. Jonker,Peter G. Jonker,J. Juaristi Campillo,F. Julbe,L. Karbevska,Pierre Kervella,Sanjeev Khanna,A. Kochoska,M. Kontizas,Georges Kordopatis,Andreas Korn,Z. Kostrzewa-Rutkowska,Z. Kostrzewa-Rutkowska,K. Kruszyńska,Sébastien Lambert,A. F. Lanza,Y. Lasne,J. F. Le Campion,Y. Le Fustec,Y. Lebreton,Y. Lebreton,T. Lebzelter,Silvio Leccia,N. Leclerc,Isabelle Lecoeur-Taïbi,S. Liao,E. Licata,H. E. P. Lindstrøm,H. E. P. Lindstrøm,T. A. Lister,E. Livanou,Alex Lobel,P. Madrero Pardo,S. Managau,Robert G. Mann,Jon Marchant,Marcella Marconi,M. M. S. Marcos Santos,S. Marinoni,S. Marinoni,Federico Marocco,Douglas J. Marshall,L. Martin Polo,J. M. Martín-Fleitas,A. Masip,Davide Massari,Alessandra Mastrobuono-Battisti,Tsevi Mazeh,Sergio Messina,Daniel Michalik,N. R. Millar,Alexey Mints,D. Molina,Roberto Molinaro,László Molnár,László Molnár,Paolo Montegriffo,Roberto Morbidelli,Thierry Morel,Derek W. Morris,A. F. Mulone,D. Munoz,C. P. Murphy,Ilaria Musella,L. Noval,C. Ordénovic,G. Orrù,J. Osinde,C. Pagani,Isabella Pagano,L. Palaversa,P. A. Palicio,A. Panahi,Michał Pawlak,Michał Pawlak,X. Peñalosa Esteller,Antti Penttilä,A. M. Piersimoni,F. X. Pineau,Emese Plachy,Emese Plachy,G. Plum,E. Poggio,Ennio Poretti,E. Poujoulet,Andrej Prsa,L. Pulone,E. Racero,E. Racero,S. Ragaini,Monica Rainer,C. M. Raiteri,Nicolas Rambaux,P. Ramos,M. Ramos-Lerate,P. Re Fiorentin,S. Regibo,Céline Reylé,Alberto Riva,Guy Rixon,N. Robichon,C. Robin,Maroussia Roelens,L. Rohrbasser,Nicholas Rowell,F. Royer,Krzysztof A. Rybicki,G. Sadowski,A. Sagristà Sellés,Johannes Sahlmann,Jesus Salgado,E. Salguero,N. Samaras,V. Sanchez Gimenez,Nicoletta Sanna,R. Santoveña,M. Sarasso,Mathias Schultheis,Eva Sciacca,M. Segol,J. C. Segovia,Damien Ségransan,D. Semeux,H. I. Siddiqui,Arnaud Siebert,Arnaud Siebert,L. Siltala,Eric Slezak,R. L. Smart,Enrique Solano,F. Solitro,D. Souami,D. Souami,J. Souchay,Alessandro Spagna,Federica Spoto,Iain A. Steele,H. Steidelmüller,C. A. Stephenson,Maria Süveges,Maria Süveges,Maria Süveges,Laszlo Szabados,E. Szegedi-Elek,F. Taris,G. Tauran,Mark Taylor,Ramachrisna Teixeira,William Thuillot,N. Tonello,F. Torra,J. Torra,C. Turon,N. Unger,M. Vaillant,E. van Dillen,O. Vanel,Alberto Vecchiato,Y. Viala,D. Vicente,S. Voutsinas,M. Weiler,Thomas Wevers,Łukasz Wyrzykowski,A. Yoldas,P. Yvard,H. Zhao,Juan Zorec,Shay Zucker,C. Zurbach,Tomaz Zwitter +455 more
Abstract: Context. This work is part of the Gaia Data Processing and Analysis Consortium papers published with the Gaia Early Data Release 3 (EDR3). It is one of the demonstration papers aiming to highlight the improvements and quality of the newly published data by applying them to a scientific case.Aims. We use the Gaia EDR3 data to study the structure and kinematics of the Magellanic Clouds. The large distance to the Clouds is a challenge for the Gaia astrometry. The Clouds lie at the very limits of the usability of the Gaia data, which makes the Clouds an excellent case study for evaluating the quality and properties of the Gaia data.Methods. The basis of our work are two samples selected to provide a representation as clean as possible of the stars of the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC). The selection used criteria based on position, parallax, and proper motions to remove foreground contamination from the Milky Way, and allowed the separation of the stars of both Clouds. From these two samples we defined a series of subsamples based on cuts in the colour-magnitude diagram; these subsamples were used to select stars in a common evolutionary phase and can also be used as approximate proxies of a selection by age.Results. We compared the Gaia Data Release 2 and Gaia EDR3 performances in the study of the Magellanic Clouds and show the clear improvements in precision and accuracy in the new release. We also show that the systematics still present in the data make the determination of the 3D geometry of the LMC a difficult endeavour; this is at the very limit of the usefulness of the Gaia EDR3 astrometry, but it may become feasible with the use of additional external data. We derive radial and tangential velocity maps and global profiles for the LMC for the several subsamples we defined. To our knowledge, this is the first time that the two planar components of the ordered and random motions are derived for multiple stellar evolutionary phases in a galactic disc outside the Milky Way, showing the differences between younger and older phases. We also analyse the spatial structure and motions in the central region, the bar, and the disc, providing new insightsinto features and kinematics. Finally, we show that the Gaia EDR3 data allows clearly resolving the Magellanic Bridge, and we trace the density and velocity flow of the stars from the SMC towards the LMC not only globally, but also separately for young and evolved populations. This allows us to confirm an evolved population in the Bridge that is slightly shift from the younger population. Additionally, we were able to study the outskirts of both Magellanic Clouds, in which we detected some well-known features and indications of new ones.