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We report results on the internal dynamical evolution of old star clusters located in the outer regions of the Small Magellanic Cloud (SMC). Because the SMC has been imprinted with evidence of tidal interaction with the Large Magellanic…

Astrophysics of Galaxies · Physics 2025-01-23 Andrés E. Piatti

The Large and Small Magellanic Clouds (LMC, SMC) are nearby dwarf galaxies whose proximity uniquely enables molecular cloud-scale resolution observations across the entire Magellanic system, a capability unmatched in any other external…

We compare the Gaia DR2 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…

Astrophysics of Galaxies · Physics 2021-04-28 Gaia Collaboration , X. Luri , L. Chemin , G. Clementini , H. E. Delgado , P. J. McMillan , M. Romero-Gómez , E. Balbinot , A. Castro-Ginard , R. Mor , V. Ripepi , L. M. Sarro , M. -R. L. Cioni , C. Fabricius , A. Garofalo , A. Helmi , T. Muraveva , A. G. A. Brown , A. Vallenari , T. Prusti , J. H. J. de , C. Babusiaux , M. Biermann , O. L. Creevey , D. W. Evans , L. Eyer , A. Hutton , F. Jansen , C. Jordi , S. A. Klioner , U. Lammers , L. Lindegren , F. Mignard , C. Panem , D. Pourbaix , S. Randich , P. Sartoretti , C. Soubiran , N. A. Walton , F. Arenou , C. A. L. Bailer-Jones , U. Bastian , M. Cropper , R. Drimmel , D. Katz , M. G. Lattanzi , F. van Leeuwen , J. Bakker , J. Castañeda , F. De , C. Ducourant , M. Fouesneau , Y. Frémat , R. Guerra , A. Guerrier , J. Guiraud , A. Jean-Antoine , E. Masana , R. Messineo , N. Mowlavi , C. Nicolas , K. Nienartowicz , F. Pailler , P. Panuzzo , F. Riclet , W. Roux , G. M. Seabroke , R. Sordo , P. Tanga , F. Thévenin , G. Gracia-Abril , J. Portell , D. Teyssier , M. Altmann , R. Andrae , I. Bellas-Velidis , K. Benson , J. Berthier , R. Blomme , E. Brugaletta , P. W. Burgess , G. Busso , B. Carry , A. Cellino , N. Cheek , Y. Damerdji , M. Davidson , L. Delchambre , A. Dell'Oro , J. Fernández-Hernández , L. Galluccio , P. García-Lario , M. Garcia-Reinaldos , J. González-Núñez , E. Gosset , R. Haigron , J. -L. Halbwachs , N. C. Hambly , D. L. Harrison , D. Hatzidimitriou , U. Heiter , J. Hernández , D. Hestroffer , S. T. Hodgkin , B. Holl , K. Janßen , G. Jevardat de Fombelle , S. Jordan , A. Krone-Martins , A. C. Lanzafame , W. Löffler , A. Lorca , M. Manteiga , O. Marchal , P. M. Marrese , A. Moitinho , A. Mora , K. Muinonen , P. Osborne , E. Pancino , T. Pauwels , A. Recio-Blanco , P. J. Richards , M. Riello , L. Rimoldini , A. C. Robin , T. Roegiers , J. Rybizki , C. Siopis , M. Smith , A. Sozzetti , A. Ulla , E. Utrilla , M. van Leeuwen , W. van Reeven , U. Abbas , A. Abreu , S. Accart , C. Aerts , J. J. Aguado , M. Ajaj , G. Altavilla , M. A. Álvarez , J. Álvarez Cid-Fuentes , J. Alves , R. I. Anderson , E. Anglada Varela , T. Antoja , M. Audard , D. Baines , S. G. Baker , L. Balaguer-Núñez , Z. Balog , C. Barache , D. Barbato , M. Barros , M. A. Barstow , S. Bartolomé , J. -L. Bassilana , N. Bauchet , A. Baudesson-Stella , U. Becciani , M. Bellazzini , M. Bernet , S. Bertone , L. Bianchi , S. Blanco-Cuaresma , T. Boch , A. Bombrun , D. Bossini , S. Bouquillon , A. Bragaglia , L. Bramante , E. Breedt , A. Bressan , N. Brouillet , B. Bucciarelli , A. Burlacu , D. Busonero , A. G. Butkevich , R. Buzzi , E. Caffau , R. Cancelliere , H. Cánovas , T. Cantat-Gaudin , R. Carballo , T. Carlucci , M. I Carnerero , J. M. Carrasco , L. Casamiquela , M. Castellani , P. Castro Sampol , L. Chaoul , P. Charlot , A. Chiavassa , G. Comoretto , W. J. Cooper , T. Cornez , S. Cowell , F. Crifo , M. Crosta , C. Crowley , C. Dafonte , A. Dapergolas , M. David , P. David , P. de Laverny , F. De Luise , R. De March , J. De Ridder , R. 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 , E. Distefano , C. Dolding , D. Eappachen , H. Enke , P. Esquej , C. Fabre , M. Fabrizio , S. Faigler , G. Fedorets , P. Fernique , A. Fienga , F. Figueras , C. Fouron , F. Fragkoudi , E. Fraile , F. Franke , M. Gai , D. Garabato , A. Garcia-Gutierrez , M. García-Torres , P. Gavras , E. Gerlach , R. Geyer , P. Giacobbe , G. Gilmore , S. Girona , G. Giuffrida , A. Gomez , I. Gonzalez-Santamaria , J. J. González-Vidal , M. Granvik , R. Gutiérrez-Sánchez , L. P. Guy , M. Hauser , M. Haywood , S. L. Hidalgo , T. Hilger , N. Hładczuk , D. Hobbs , G. Holland , H. E. Huckle , G. Jasniewicz , P. G. Jonker , J. Juaristi , F. Julbe , L. Karbevska , P. Kervella , S. Khanna , A. Kochoska , M. Kontizas , G. Kordopatis , A. J. Korn , Z. Kostrzewa-Rutkowska , K. Kruszyńska , S. Lambert , A. F. Lanza , Y. Lasne , J. -F. Le Campion , Y. Le Fustec , Y. Lebreton , T. Lebzelter , S. Leccia , N. Leclerc , I. Lecoeur-Taibi , S. Liao , E. Licata , H. E. P. Lindstrøm , T. A. Lister , E. Livanou , A. Lobel , P. Madrero , S. Managau , R. G. Mann , J. M. Marchant , M. Marconi , M. M. S. Marcos , S. Marinoni , F. Marocco , D. J. Marshall , L. Martin Polo , J. M. Martín-Fleitas , A. Masip , D. Massari , A. Mastrobuono-Battisti , T. Mazeh , S. Messina , D. Michalik , N. R. Millar , A. Mints , D. Molina , R. Molinaro , L. Molnár , P. Montegriffo , R. Morbidelli , T. Morel , D. Morris , A. F. Mulone , D. Munoz , C. P. Murphy , I. Musella , L. Noval , C. Ordénovic , G. Orrù , J. Osinde , C. Pagani , I. Pagano , L. Palaversa , P. A. Palicio , A. Panahi , M. Pawlak , X. Peñalosa , A. Penttilä , A. M. Piersimoni , F. -X. Pineau , E. Plachy , G. Plum , E. Poggio , E. Poretti , E. Poujoulet , A. Prša , L. Pulone , E. Racero , S. Ragaini , M. Rainer , C. M. Raiteri , N. Rambaux , P. Ramos , M. Ramos-Lerate , P. Re , S. Regibo , C. Reylé , A. Riva , G. Rixon , N. Robichon , C. Robin , M. Roelens , L. Rohrbasser , N. Rowell , F. Royer , K. A. Rybicki , G. Sadowski , A. Sagristà , J. Sahlmann , J. Salgado , E. Salguero , N. Samaras , V. Sanchez , N. Sanna , R. Santoveña , M. Sarasso , M. Schultheis , E. Sciacca , M. Segol , J. C. Segovia , D. Ségransan , D. Semeux , H. I. Siddiqui , A. Siebert , L. Siltala , E. Slezak , R. L. Smart , E. Solano , F. Solitro , D. Souami , J. Souchay , A. Spagna , F. Spoto , I. A. Steele , H. Steidelmüller , C. A. Stephenson , M. Süveges , L. Szabados , E. Szegedi-Elek , F. Taris , G. Tauran , M. B. Taylor , R. Teixeira , W. Thuillot , N. Tonello , F. Torra , J. Torra , C. Turon , N. Unger , M. Vaillant , E. van , O. Vanel , A. Vecchiato , Y. Viala , D. Vicente , S. Voutsinas , M. Weiler , T. Wevers , Ł. Wyrzykowski , A. Yoldas , P. Yvard , H. Zhao , J. Zorec , S. Zucker , C. Zurbach , T. Zwitter

The spatial distribution of sources populating different regions of the colour-magnitude diagram (I-J, I) extracted from the DENIS catalogue towards the Magellanic Clouds (DCMC -- Cioni et al. 2000) reveal significantly different…

Astrophysics · Physics 2007-05-23 Maria-Rosa L. Cioni , Harm J. Habing , Frank P. Israel

The proximity of the Large and Small Magellanic Clouds (LMC and SMC) provides the opportunity to study the impact of dwarf-dwarf interactions on their mass assembly with a unique level of detail. To this end, we analyze two-filter broadband…

Recent observational and theoretical studies on the three-dimensional (3D) space motions of the Large and the Small Magellanic Clouds (LMC and SMC, respectively) have strongly suggested that the latest proper motion measurements of the…

Astrophysics · Physics 2009-11-13 Kenji Bekki

The HST proper motion (PM) measurements of the Clouds have severe implications for their interaction history with the Milky Way (MW) and with each other. The Clouds are likely on their first passage about the MW and the SMC's orbit about…

The formation scenario of the Magellanic Bridge during an encounter between the Large and Small Magellanic Clouds $\sim200\,$Myr ago, as proposed by $N$-body models, would be imprinted in the chemical enrichment and kinematics of its stars,…

We have analyzed the Magellanic Stream (MS) using the deepest and the most resolved H I survey of the Southern Hemisphere (the Galactic All-Sky Survey). The overall Stream is structured into two filaments, suggesting two ram-pressure tails…

Astrophysics of Galaxies · Physics 2016-02-08 F. Hammer , Y. B. Yang , H. Flores , M. Puech , S. Fouquet

We analyzed the largest Small Magellanic Cloud (SMC) cluster sample (32) with proper motions and radial velocity measurements, from which we obtained their space velocity components. By adopting as a reference the recent best-fitted…

Astrophysics of Galaxies · Physics 2021-10-13 Andrés E. Piatti

We introduce a novel theoretical model to explain the long-standing puzzle of the nature of the microlensing events reported towards the Large Magellanic Cloud (LMC) by the MACHO and OGLE collaborations. We propose that a population of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Gurtina Besla , Lars Hernquist , Abraham Loeb

The Large and Small Magellanic Cloud (LMC and SMC) form the closest interacting galactic system to the Milky Way, therewith providing a laboratory to test cosmological models in the local Universe. We quantify the likelihood for the…

Astrophysics of Galaxies · Physics 2024-10-02 Moritz Haslbauer , Indranil Banik , Pavel Kroupa , Hongsheng Zhao , Elena Asencio

The periphery of the Small Magellanic Cloud (SMC) can unlock important information regarding galaxy formation and evolution in interacting systems. Here, we present a detailed study of the extended stellar structure of the SMC using deep…

We measure the properties of optical emission lines in multiple locations across the Large Magellanic Cloud (LMC) using the Australian National University 2.3-metre telescope and the WiFeS integral field spectrograph. From these…

Astrophysics of Galaxies · Physics 2024-03-05 Philip Lah , Matthew Colless , Francesco D'Eugenio , Brent Groves , Joseph D. Gelfand

The formation of the Magellanic Bridge during an encounter between the Magellanic Clouds $\sim$200 Myr ago would be imprinted in the chemical evolution and kinematics of its stellar population, with sites of active star formation. Since it…

We present results obtained from spectroscopic observations of red giants located in the fields of the Large Magellanic Cloud (LMC) globular clusters (GCs) NGC 1928 and NGC 1939. We used the GMOS and AAOmega+2dF spectrographs to obtain…

Astrophysics of Galaxies · Physics 2018-08-29 A. E. Piatti , N. Hwang , A. A. Cole , M. S. Angelo , B. Emptage

We present a new optical polarimetric catalog for the Small Magellanic Cloud (SMC). It contains a total of 7207 stars, located in the Northeast (NE) and Wing sections of the SMC and part of the Magellanic Bridge. This new catalog is a…

Astrophysics of Galaxies · Physics 2015-07-16 A. Lobo Gomes , A. M. Magalhães , A. Pereyra , C. V. Rodrigues

Magellanic spiral galaxies are a class of one-armed systems that often exhibit an offset stellar bar, and are rarely found around massive spiral galaxies. Using a set of N-body and hydrodynamic simulations we consider a dwarf-dwarf galaxy…

Astrophysics of Galaxies · Physics 2016-08-25 Stephen A. Pardy , Elena D'Onghia , E. Athanassoula , Eric M. Wilcots , Kartik Sheth

We derive structural parameters and evidence for extended tidal debris from star count and preliminary standard candle analyses of the Large Magellanic Cloud based on Two Micron All Sky Survey (2MASS) data. The full-sky coverage and low…

Astrophysics · Physics 2010-01-07 Martin D. Weinberg , Sergei Nikolaev