GAIA: Composition, formation and evolution of the Galaxy
Michael Perryman,K. S. de Boer,Gerard Gilmore,Erik Høg,Mario G. Lattanzi,Lennart Lindegren,Xavier Luri,Francois Mignard,O. Pace,P. T. de Zeeuw +9 more
TLDR
The GAIA astrometric mission has recently been approved as one of the next two ''cornerstones'' of ESA's science programme, with a launch datetarget of not later than mid-2012 as discussed by the authors.Abstract:
The GAIA astrometric mission has recently been approved as one of thenext two ``cornerstones'' of ESA's science programme, with a launch datetarget of not later than mid-2012. GAIA will provide positional andradial velocity measurements with the accuracies needed to produce astereoscopic and kinematic census of about one billion stars throughoutour Galaxy (and into the Local Group), amounting to about 1 percent ofthe Galactic stellar population. GAIA's main scientific goal is toclarify the origin and history of our Galaxy, from a quantitative censusof the stellar populations. It will advance questions such as when thestars in our Galaxy formed, when and how it was assembled, and itsdistribution of dark matter. The survey aims for completeness to V=20mag, with accuracies of about 10 mu as at 15 mag. Combined withastrophysical information for each star, provided by on-boardmulti-colour photometry and (limited) spectroscopy, these data will havethe precision necessary to quantify the early formation, and subsequentdynamical, chemical and star formation evolution of our Galaxy.Additional products include detection and orbital classification of tensof thousands of extra-Solar planetary systems, and a comprehensivesurvey of some 105-106 minor bodies in our SolarSystem, through galaxies in the nearby Universe, to some 500 000 distantquasars. It will provide a number of stringent new tests of generalrelativity and cosmology. The complete satellite system was evaluated aspart of a detailed technology study, including a detailed payloaddesign, corresponding accuracy assesments, and results from a prototypedata reduction development. (Less)read more
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Journal ArticleDOI
The Gaia mission
T. Prusti,J. H. J. de Bruijne,Anthony G. A. Brown,Antonella Vallenari,C. Babusiaux,C. A. L. Bailer-Jones,Ulrich Bastian,M. Biermann,D. W. Evans,L. Eyer,F. A. Jansen,Carme Jordi,Sergei A. Klioner,Uwe Lammers,Lennart Lindegren,Xavier Luri,Francois Mignard,D. J. Milligan,C. Panem,V. Poinsignon,Dimitri Pourbaix,Sofia Randich,G. Sarri,P. Sartoretti,H. I. Siddiqui,Caroline Soubiran,V. Valette,F. van Leeuwen,N. A. Walton,Conny Aerts,Frédéric Arenou,Mark Cropper,R. Drimmel,Erik Høg,D. Katz,Mario G. Lattanzi,W. O'Mullane,Eva K. Grebel,Andrew D. Holland,C. Huc,X. Passot,L. Bramante,Carla Cacciari,J. Castañeda,L. Chaoul,N. Cheek,F. De Angeli,C. Fabricius,Raphael Guerra,Jose M Hernandez,A. Jean-Antoine-Piccolo,Eduard Masana,R. Messineo,Nami Mowlavi,Krzysztof Nienartowicz,D. Ordóñez-Blanco,Pasquale Panuzzo,Jordi Portell,P. J. Richards,M. Riello,George M. Seabroke,Paolo Tanga,F. Thévenin,J. Torra,Sebastian Els,G. Gracia-Abril,G. Comoretto,M. Garcia-Reinaldos,T. Lock,E. Mercier,Martin Altmann,Rene Andrae,Tri L. Astraatmadja,I. Bellas-Velidis,Kevin Benson,Jérôme Berthier,R. Blomme,G. Busso,Benoit Carry,Alberto Cellino,Gisella Clementini,S. Cowell,O. L. Creevey,J. Cuypers,Michael Davidson,J. De Ridder,A. de Torres,Ludovic Delchambre,Aldo Dell'Oro,C. Ducourant,Yves Fremat,Miguel García-Torres,Eric Gosset,J. L. Halbwachs,Nigel Hambly,D. L. Harrison,M. Hauser,Daniel Hestroffer,Simon Hodgkin,H. E. Huckle,A. Hutton,Gérard Jasniewicz,Stefan Jordan,M. Kontizas,Andreas Korn,A. C. Lanzafame,Minia Manteiga,André Moitinho,Karri Muinonen,J. Osinde,Elena Pancino,T. Pauwels,J. M. Petit,Alejandra Recio-Blanco,Annie C. Robin,L. M. Sarro,Christos Siopis,M. J. S. Smith,K. W. Smith,Alessandro Sozzetti,William Thuillot,W. van Reeven,Y. Viala,Ummi Abbas,A. Abreu Aramburu,S. Accart,J. J. Aguado,P. M. Allan,Walter Allasia,G. Altavilla,M. A. Álvarez,João Alves,Richard I. Anderson,Alexandre Humberto Andrei,E. Anglada Varela,E. Antiche,Teresa Antoja,Sonia Anton,Bernardino Arcay,A. Atzei,L. Ayache,N. Bach,S. G. Baker,L. Balaguer-Núñez,Christophe Barache,C. Barata,Antoine Barbier,F. Barblan,M. Baroni,D. Barrado y Navascués,M. Barros,Martin A. Barstow,Ugo Becciani,Michele Bellazzini,G. Bellei,A. Bello García,Vasily Belokurov,Philippe Bendjoya,A. Berihuete,Luciana Bianchi,Olivier Bienaymé,F. Billebaud,Nadejda Blagorodnova,S. Blanco-Cuaresma,T. Boch,Alex Bombrun,R. Borrachero,S. Bouquillon,G. Bourda,Hervé Bouy,Angela Bragaglia,Maarten A. Breddels,N. Brouillet,T. Brüsemeister,Beatrice Bucciarelli,F. Budnik,P. Burgess,R. Burgon,A. Burlacu,Deborah Busonero,R. Buzzi,Elisabetta Caffau,J. Cambras,Heather Campbell,Rossella Cancelliere,Tristan Cantat-Gaudin,T. Carlucci,J. M. Carrasco,Marco Castellani,P. Charlot,J. Charnas,P. Charvet,F. Chassat,Andrea Chiavassa,M. Clotet,G. Cocozza,Ross Collins,P. Collins,G. Costigan,F. Crifo,Nicholas Cross,Mariateresa Crosta,C. Crowley,Carlos Dafonte,Yassine Damerdji,A. Dapergolas,P. David,M. David,P. De Cat,F. de Felice,P. de Laverny,F. De Luise,R. De March,D. de Martino,R. E. de Souza,Jonas Debosscher,E. del Pozo,Marco Delbo,A. Delgado,H. E. Delgado,F. di Marco,P. Di Matteo,S. Diakite,Elisa Distefano,C. Dolding,S. dos Anjos,P. Drazinos,J. Durán,Y. Dzigan,E. Ecale,Bengt Edvardsson,Harry Enke,M. Erdmann,D. Escolar,M. Espina,Nick Evans,G. Eynard Bontemps,C. Fabre,M. Fabrizio,Simchon Faigler,A. J. Falcão,M. Farràs Casas,F. Faye,Luciana Federici,Grigori Fedorets,J. Fernández-Hernández,Pierre Fernique,Agnes Fienga,Francesca Figueras,F. Filippi,K. Findeisen,A. Fonti,Morgan Fouesneau,E. Fraile,Morgan Fraser,J. Fuchs,R. Furnell,Mario Gai,S. Galleti,Laurent Galluccio,D. Garabato,F. García-Sedano,P. Gare,A. Garofalo,N. Garralda,P. Gavras,J. Gerssen,R. Geyer,Gerry Gilmore,S. Girona,G. Giuffrida,M. Gomes,Ana González-Marcos,J. González-Núñez,J. J. González-Vidal,Mikael Granvik,A. Guerrier,Patrick Guillout,J. Guiraud,A. Gúrpide,R. Gutiérrez-Sánchez,Leanne P. Guy,R. Haigron,Despina Hatzidimitriou,Misha Haywood,Ulrike Heiter,Amina Helmi,David Hobbs,W. Hofmann,B. Holl,G. Holland,Julie Ann Hunt,A. Hypki,V. Icardi,Mike Irwin,G. Jevardat de Fombelle,Paula Jofre,Peter G. Jonker,Alain Jorissen,F. Julbe,A. Karampelas,A. Kochoska,R. Kohley,Katrien Kolenberg,E. Kontizas,Sergey E. Koposov,Georges Kordopatis,P. Koubsky,A. Kowalczyk,Alberto Krone-Martins,M. Kudryashova,I. Kull,R. K. Bachchan,F. Lacoste-Seris,Antonino F. Lanza,J.-B. Lavigne,C. Le Poncin-Lafitte,Yveline Lebreton,T. Lebzelter,Silvio Leccia,N. Leclerc,Isabelle Lecoeur-Taïbi,Vincent Lemaitre,H. Lenhardt,F. Leroux,Shilong Liao,E. Licata,H. E. P. Lindstrøm,T. A. Lister,E. Livanou,Alex Lobel,W. Löffler,M. López,A. Lopez-Lozano,D. Lorenz,T. Loureiro,I. MacDonald,T. Magalhães Fernandes,S. Managau,Robert G. Mann,G. Mantelet,O. Marchal,Jon Marchant,Marcella Marconi,J. Marie,S. Marinoni,P. M. Marrese,G. Marschalkó,D. J. Marshall,J. M. Martín-Fleitas,M. Martino,Nicolas Mary,Gal Matijevic,Tsevi Mazeh,Paul J. McMillan,S. Messina,A. Mestre,Daniel Michalik,N. R. Millar,B. M. H. Miranda,D. Molina,Roberto Molinaro,Marco Molinaro,László Molnár,M. Moniez,Paolo Montegriffo,D. Monteiro,R. Mor,A. Mora,Roberto Morbidelli,Thierry Morel,Stephan Morgenthaler,T. Morley,Derek W. Morris,A. F. Mulone,Tatiana Muraveva,Ilaria Musella,J. Narbonne,Gijs Nelemans,Luciano Nicastro,L. Noval,C. Ordenovic,Joaquín Ordieres-Meré,P. Osborne,C. Pagani,Isabella Pagano,F. Pailler,H. Palacin,L. Palaversa,P. Parsons,T. Paulsen,M. Pecoraro,R. Pedrosa,H. Pentikäinen,J. Pereira,B. Pichon,A. M. Piersimoni,F. X. Pineau,Emese Plachy,G. Plum,E. Poujoulet,Andrej Prsa,L. Pulone,S. Ragaini,S. Rago,Nicolas Rambaux,M. Ramos-Lerate,Piero Ranalli,Grégor Rauw,A. M. Read,S. Regibo,F. Renk,Céline Reylé,Rita A. Ribeiro,Lorenzo Rimoldini,Vincenzo Ripepi,Alberto Riva,Guy Rixon,Maroussia Roelens,M. Romero-Gómez,Nicholas Rowell,Frédéric Royer,Anja Rudolph,L. Ruiz-Dern,G. Sadowski,T. Sagristà Sellés,Johannes Sahlmann,Jesus Salgado,E. Salguero,M. Sarasso,H. Savietto,A. Schnorhk,M. Schultheis,Eva Sciacca,M. Segol,J. C. Segovia,Damien Ségransan,E. Serpell,I.-C. Shih,Riccardo Smareglia,Richard L. Smart,Caleb Smith,Enrique Solano,F. Solitro,Rosanna Sordo,Sonia Nieto,J. Souchay,Alessandro Spagna,Federica Spoto,U. Stampa,Iain A. Steele,H. Steidelmüller,C.A. Stephenson,H. Stoev,F. F. Suess,Maria Süveges,Jean Surdej,László Szabados,E. Szegedi-Elek,D. Tapiador,F. Taris,G. Tauran,Mark Taylor,Ramachrisna Teixeira,D. Terrett,Brandon Tingley,Scott Trager,C. Turon,Ana Ulla,E. Utrilla,Gaetano Valentini,A. van Elteren,E. Van Hemelryck,M. van Leeuwen,M. Varadi,Alberto Vecchiato,Jovan Veljanoski,T. Via,D. Vicente,Steven S. Vogt,Holger Voss,Viktor Votruba,S. Voutsinas,G. Walmsley,M. Weiler,K. Weingrill,D. Werner,Thomas Wevers,G. Whitehead,Łukasz Wyrzykowski,A. Yoldas,M. Žerjal,Shay Zucker,C. Zurbach,Tomaz Zwitter,A. Alecu,M. Allen,C. Allende Prieto,António Amorim,Guillem Anglada-Escudé,V. Arsenijevic,S. Azaz,P. Balm,M. Beck,H.-H. Bernstein,Lionel Bigot,Albert Bijaoui,C. Blasco,M. Bonfigli,Giuseppe Bono,Steve Boudreault,Alessandro Bressan,S. Brown,P.-M. Brunet,P. S. Bunclark,R. Buonanno,A. G. Butkevich,C. Carret,C. Carrion,Laurent Chemin,F. Chéreau,Leonardo Corcione,E. Darmigny,K. S. de Boer,P. de Teodoro,P. T. de Zeeuw,C. Delle Luche,Catherine Dominguès,Pierre Dubath,F. Fodor,B. Frézouls,A. Fries,Diego Fustes,D. Fyfe,E. Gallardo,J. Gallegos,Daniele Gardiol,M. Gebran,A. Gomboc,A. E. Gomez,E. Grux,A. Gueguen,A. Heyrovsky,J. Hoar,G. Iannicola,Y. Isasi Parache,A.-M. Janotto,E. Joliet,A. Jonckheere,R. Keil,Dae-Won Kim,Peter Klagyivik,Joakim Klar,J. Knude,Oleg Kochukhov,I. Kolka,Janez Kos,A. Kutka,Valéry Lainey,D. LeBouquin,Chao Liu,Davide Loreggia,Valeri V. Makarov,M. Marseille,Christophe Martayan,O. Martinez-Rubi,B. Massart,F. Meynadier,Shan Mignot,Ulisse Munari,A.-T. Nguyen,Thomas Nordlander,P. Ocvirk,K. S. O'Flaherty,A. Olias Sanz,P. Ortiz,J. Osorio,Dagmara Oszkiewicz,A. Ouzounis,M. Palmer,P. Park,Ester Pasquato,C. Peltzer,J. Peralta,F. Péturaud,T. Pieniluoma,E. Pigozzi,J. Poels,G. Prat,Thibaut Prod'homme,F. Raison,José Manuel Rebordão,D. Risquez,Brigitte Rocca-Volmerange,Simon Rosen,M. I. Ruiz-Fuertes,Federico Russo,Steven Sembay,I. Serraller Vizcaino,A. Short,A. Siebert,H. Silva,D. Sinachopoulos,Eric Slezak,Michael Soffel,Danuta Sosnowska,V. Straižys,M. ter Linden,Dirk Terrell,Stephan Theil,C. Tiede,L. Troisi,P. Tsalmantza,D. Tur,Mattia Vaccari,Frédéric Vachier,P. Valles,W. Van Hamme,L. Veltz,Jenni Virtanen,J.-M. Wallut,R. Wichmann,Mark I. Wilkinson,H. Ziaeepour,Sven Zschocke +624 more
TL;DR: Gaia as discussed by the authors is a cornerstone mission in the science programme of the European Space Agency (ESA). The spacecraft construction was approved in 2006, following a study in which the original interferometric concept was changed to a direct-imaging approach.
Journal ArticleDOI
LSST: from Science Drivers to Reference Design and Anticipated Data Products
Željko Ivezić,Steven M. Kahn,J. Anthony Tyson,Bob Abel,Emily Acosta,R. A. Allsman,David Alonso,Yusra AlSayyad,Scott F. Anderson,John Andrew,James Roger P. Angel,George Angeli,R. Ansari,P. Antilogus,Constanza Araujo,Robert Armstrong,Kirk Arndt,Pierre Astier,Éric Aubourg,Nicole Auza,Tim Axelrod,Deborah Bard,J. Barr,A. Barrau,James G. Bartlett,Amanda E. Bauer,Brian J. Bauman,S. Baumont,Andrew C. Becker,Jacek Becla,Cristina E. Beldica,Steve Bellavia,Federica B. Bianco,Rahul Biswas,G. Blanc,Jonathan Blazek,Roger Blandford,Josh Bloom,J.R. Bogart,Tim W. Bond,A. W. Borgland,Kirk D. Borne,James Bosch,D. Boutigny,Craig A. Brackett,Andrew Bradshaw,W. N. Brandt,Michael E. Brown,James S. Bullock,Patricia R. Burchat,D. L. Burke,Gianpietro Cagnoli,Daniel Calabrese,Shawn Callahan,Alice L. Callen,Srinivasan Chandrasekharan,Glenaver Charles-Emerson,Steve Chesley,Elliott Cheu,Hsin-Fang Chiang,James Chiang,Carol Chirino,Derek Chow,David R. Ciardi,Charles F. Claver,Johann Cohen-Tanugi,Joseph J. Cockrum,Rebecca Coles,Andrew J. Connolly,Kem H. Cook,Asantha Cooray,Kevin R. Covey,Chris Cribbs,Wei Cui,Roc M. Cutri,P. N. Daly,Scott F. Daniel,Felipe Daruich,Guillaume Daubard,Greg Daues,William A. Dawson,Francisco Delgado,Alfred Dellapenna,Robert de Peyster,Miguel de Val-Borro,Seth Digel,Peter Doherty,Richard Dubois,G. P. Dubois-Felsmann,Josef Durech,Frossie Economou,Michael Eracleous,Henry C. Ferguson,Enrique Figueroa,Merlin Fisher-Levine,W. B. Focke,Michael D. Foss,James Frank,Michael D. Freemon,E. Gangler,Eric Gawiser,John C. Geary,Perry M. Gee,Marla Geha,Charles J. B. Gessner,Robert R. Gibson,D. Kirk Gilmore,T. Glanzman,William Glick,Tatiana Goldina,Daniel A. Goldstein,Iain Goodenow,Melissa L. Graham,William J. Gressler,Philippe Luc Yves Gris,Leanne P. Guy,Augustin Guyonnet,Gunther Haller,Ron Harris,P. Hascall,Justine Haupt,Fabio Hernandez,Sven Herrmann,Edward Hileman,Joshua Hoblitt,John A. Hodgson,Craig J. Hogan,Dajun Huang,M.E. Huffer,P. Ingraham,Walter R. Innes,Suzanne Jacoby,Bhuvnesh Jain,Fabrice Jammes,James Jee,Tim Jenness,G. Jernigan,Darko Jevremović,Kenneth Johns,A. S. Johnson,M. W. G. Johnson,R. Lynne Jones,Claire Juramy-Gilles,Mario Juric,Jason S. Kalirai,Nitya Kallivayalil,Bryce Kalmbach,Jeffrey P. Kantor,P. Karst,Mansi M. Kasliwal,H. Kelly,Richard Kessler,Veronica Kinnison,D. Kirkby,Lloyd Knox,Ivan Kotov,V. Krabbendam,K. Simon Krughoff,Petr Kubánek,John Kuczewski,Shri Kulkarni,John Ku,N. Kurita,Craig S. Lage,Ron Lambert,Travis Lange,J. Brian Langton,Laurent Le Guillou,D. Levine,Ming Liang,Kian-Tat Lim,Chris Lintott,Kevin E. Long,Margaux Lopez,Paul J. Lotz,Robert H. Lupton,Nate B. Lust,Lauren A. MacArthur,Ashish Mahabal,Rachel Mandelbaum,Darren S. Marsh,Philip J. Marshall,S. L. Marshall,Morgan May,Robert McKercher,Michelle McQueen,Joshua Meyers,Myriam Migliore,M. L. Miller,David J. Mills,Connor Miraval,Joachim Moeyens,David G. Monet,M. Moniez,Serge Monkewitz,Christopher Montgomery,Fritz Mueller,Gary P. Muller,Freddy Munoz Arancibia,Douglas R. Neill,Scott P. Newbry,Jean-Yves Nief,Andrei Nomerotski,Martin Nordby,Paul O'Connor,John Oliver,Scot S. Olivier,Knut Olsen,William O'Mullane,Sandra Ortiz,Shawn Osier,Russell Owen,Reynald Pain,Paul E. Palecek,John K. Parejko,James B. Parsons,Nathan M. Pease,J. Matt Peterson,John R. Peterson,Don Petravick,M. E.Libby Petrick,C. E. Petry,Francesco Pierfederici,Stephen R. Pietrowicz,R. Pike,Philip A. Pinto,Raymond Plante,S. Plate,Paul A. Price,Michael Prouza,V. Radeka,J. Rajagopal,Andrew P. Rasmussen,Nicolas Regnault,Kevin Reil,David J Reiss,Michael A. Reuter,Stephen T. Ridgway,Vincent J. Riot,Steve Ritz,Sean M. Robinson,William Roby,A. Roodman,Wayne Rosing,Cecille Roucelle,Matthew R. Rumore,Stefano Russo,Abhijit Saha,B. Sassolas,T. Schalk,Pim Schellart,Rafe Schindler,Samuel Schmidt,Donald P. Schneider,Michael Schneider,William Schoening,German Schumacher,Megan E. Schwamb,Jacques Sebag,Brian M. Selvy,G. H. Sembroski,Lynn G. Seppala,Andrew Serio,Eduardo P. Serrano,Richard A. Shaw,Ian Shipsey,Jonathan Sick,Nicole M. Silvestri,C. T. Slater,J. Allyn Smith,R. Chris Smith,Shahram Sobhani,Christine Soldahl,Lisa J. Storrie-Lombardi,Edward Stover,Michael A. Strauss,Rachel Street,Christopher W. Stubbs,Ian Sullivan,Donald W. Sweeney,John D. Swinbank,Alexander S. Szalay,Péter Takács,Stephen A. Tether,Jon J Thaler,J. G. Thayer,Sandrine Thomas,V. Thukral,Jeff Tice,David Trilling,M. Turri,Richard Van Berg,Daniel E. Vanden Berk,K. Vetter,Francoise Virieux,Tomislav Vucina,William Wahl,Lucianne M. Walkowicz,Brian Walsh,C. W. Walter,Daniel L. Wang,Shin-Yawn Wang,Michael Warner,Oliver Wiecha,Beth Willman,Scott Winters,David Wittman,Sidney C. Wolff,W. Michael Wood-Vasey,Xiuqin Wu,Bo Xin,Peter Yoachim,Hu Zhan +312 more
TL;DR: The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the solar system, exploring the transient optical sky, and mapping the Milky Way.
Journal ArticleDOI
Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
A. G. A. Brown,Antonella Vallenari,T. Prusti,J. H. J. de Bruijne,Francois Mignard,R. Drimmel +5 more
TL;DR: The first Gaia data release, Gaia DR1 as mentioned in this paper, consists of the positions, parallaxes, and mean proper motions for about 2 million of the brightest stars in common with the Hipparcos and Tycho-2 catalogues.
Journal ArticleDOI
Gaia Data Release 1 Summary of the astrometric, photometric, and survey properties
Anthony G. A. Brown,Antonella Vallenari,T. Prusti,J. H. J. de Bruijne,Francois Mignard,R. Drimmel,C. Babusiaux,Coryn A. L. Bailer-Jones,Ulrich Bastian,M. Biermann,D. W. Evans,L. Eyer,F. Jansen,Carme Jordi,D. Katz,Sergei A. Klioner,U. Lammers,Lennart Lindegren,Xavier Luri,William O'Mullane,C. Panem,Dimitri Pourbaix,Sofia Randich,P. Sartoretti,H. I. Siddiqui,Caroline Soubiran,V. Valette,F. van Leeuwen,Nicholas A. Walton,Conny Aerts,Frédéric Arenou,Mark Cropper,Erik Høg,M. G. Lattanzi,Eva K. Grebel,Andrew D. Holland,C. Huc,X. Passot,Michael Perryman,L. Bramante,C. Cacciari,J. Castañeda,L. Chaoul,N. Cheek,F. De Angeli,C. Fabricius,Raphael Guerra,Jonay I. González Hernández,A. Jean-Antoine-Piccolo,E. Masana,R. Messineo,Nami Mowlavi,Krzysztof Nienartowicz,D. Ordóñez-Blanco,P. Panuzzo,Jordi Portell,P. J. Richards,M. Riello,George M. Seabroke,Paolo Tanga,F. Thévenin,J. Torra,S. G. Els,G. Gracia-Abril,G. Comoretto,M. Garcia-Reinaldos,T. Lock,E. Mercier,Martin Altmann,Rene Andrae,Tri L. 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The Kinematics, Orbit, and Survival of the Sagittarius Dwarf Spheroidal Galaxy
TL;DR: The Sagittarius galaxy (Sgr), the closest satellite galaxy of the Milky Way, has survived for many orbits about the Galaxy. as discussed by the authors showed that the stars of the Sgr dwarf are embedded in a constant-density dark matter halo, representing the core of a tidally limited system.
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Kinematics, Chemistry, and Structure of the Galaxy
TL;DR: In this paper, the structure, dynamique, evolution, l'evolution, and the composition chimique de la Galaxie are discussed in terms of the structure and dynamique.
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Galactic Structure Surveys and the Evolution of the Milky Way
TL;DR: A review of the evolution of the Milky Way from the per-spective afforded by surveys of Galactic stellar populations can be found in this article, where the authors concentrate primarily on the most commonly-measured stellar parameters in sys-tematic Galactic surveys of stars or star clusters.
Journal ArticleDOI
The Kinematics, Orbit, and Survival of the Sagittarius Dwarf Spheroidal Galaxy
TL;DR: The Sagittarius galaxy (Sgr), the closest satellite galaxy of the Milky Way, has survived for many orbits about the Galaxy. as discussed by the authors showed that the stars of the Sgr dwarf are embedded in a constant-density dark matter halo, representing the core of a tidally limited system.
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