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The main goal of this study is to compile a catalogue including the fundamental parameters of a complete sample of 277 star clusters (SCs) of the Large Magellanic Cloud (LMC) observed in the Washington photometric system, including 82…

Solar and Stellar Astrophysics · Physics 2016-01-27 Tali Palma , Luciana V. Gramajo , Juan J. Clariá , Marcelo Lares , Doug Geisler , Andrea V. Ahumada

We present colour-magnitude diagrams (CMDs) for a sample of seven young massive clusters in the galaxies NGC 1313, NGC 1569, NGC 1705, NGC 5236 and NGC 7793. The clusters have ages in the range 5-50 million years and masses of 10^5 -10^6…

Astrophysics of Galaxies · Physics 2015-05-28 S. S. Larsen , S. E. de Mink , J. J. Eldridge , N. Langer , N. Bastian , A. Seth , L. J. Smith , J. Brodie , Y. N. Efremov

We report on HST observations of six candidate old globular clusters in the Large Magellanic Cloud: NGC 1754, NGC 1835, NGC 1898, NGC 1916, NGC 2005 and NGC 2019. Deep exposures with the F555W and F814W filters provide us with…

We present CMDs in the V and I bands for fifteen star clusters in the Small Magellanic Cloud (SMC) based on data taken with the Very Large Telescope (VLT, Chile). We selected these clusters from our previous work, wherein we derived cluster…

Solar and Stellar Astrophysics · Physics 2014-03-05 M. C. Parisi , D. Geisler , G. Carraro , J. J. Clariá , E. Costa , A. J. Grocholski , A. Sarajedini , R. Leiton , A. E. Piatti

Context: Analysis of ages and metallicities of star clusters in the Magellanic Clouds provide information for studies on the chemical evolution of the Clouds and other dwarf irregular galaxies. Aims: The aim is to derive ages and…

Solar and Stellar Astrophysics · Physics 2015-03-13 Bruno Dias , Paula Coelho , Beatriz Barbuy , Leandro Kerber , Thais Idiart

We present results from photometric and spectroscopic data obtained with SOAR and Gemini observatory facilities in the field of a recently discovered star cluster. The cluster, projected towards the Eastern side of the outer disc of the…

Astrophysics of Galaxies · Physics 2018-10-17 Andrés E. Piatti , Ricardo Salinas , Eva K. Grebel

We present results of new photometry for the globular star cluster NGC 2155 in the Large Magellanic Cloud (LMC). Our I- and V-band observations were obtained with the 6.5-meter Magellan 1 Baade Telescope at Las Campanas Observatory…

Solar and Stellar Astrophysics · Physics 2011-06-07 M. Otulakowska , A. Olech , W. Pych , A. A. Pamyatnykh , T. Zdravkov , S. M. Rucinski

To study the evolution of binary star clusters we have imaged 7 systems in the Small Magellanic Cloud with SOAR 4-m telescope using B and V filters. The sample contains pairs with well-separated components (d < 30 pc) as well as systems…

Solar and Stellar Astrophysics · Physics 2015-05-14 J. F. C. Santos , A. A. Schmidt , E. Bica

The Advanced Camera for Surveys on board the Hubble Space Telescope has been used to obtain deep, high-resolution images of the intermediate-age star cluster NGC 1846 in the Large Magellanic Cloud. We present new color-magnitude diagrams…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Paul Goudfrooij , Thomas H. Puzia , Vera Kozhurina-Platais , Rupali Chandar

Recent studies have shown that the observed main-sequence turn-off (MSTO) in colour-magnitude diagrams of intermediate age (1-2 Gyr) clusters in the LMC are broader than would be nominally expected for a simple stellar population. This has…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Nate Bastian , Esteban Silva-Villa

A large number of intermediate-age (~1-2-Gyr old) globular clusters (GCs) in the Large and the Small Magellanic Cloud (MC) exhibit either bimodal or extended main-sequence (MS) turn off and dual red clump. Moreover, recent papers have shown…

Solar and Stellar Astrophysics · Physics 2015-11-04 A. P. Milone

We present 100 multiple cluster candidates selected from the OGLE catalog of star clusters in the Large Magellanic Cloud. Statistical analysis shows that the significant fraction of these objects may constitute physical systems. Coeval ages…

Astrophysics · Physics 2007-05-23 G. Pietrzynski , A. Udalski

The LMC has a rich star cluster system spanning a wide range of ages and masses. One striking feature of the LMC cluster system is the existence of an age gap between 3-10 Gyrs. Four LMC clusters whose integrated colours are consistent with…

Cosmology and Nongalactic Astrophysics · Physics 2009-07-17 Eduardo Balbinot , Basilio Santiago , Leandro Kerber , Batriz Barbuy , Bruno Dias

We present the results of photometric measurements from images of the LMC cluster ESO 121-SC03 taken with HST/ACS. Our resulting CMD reaches 3 magnitudes below the main-sequence turn-off, representing the deepest observation of this cluster…

Astrophysics · Physics 2009-11-11 A. D. Mackey , M. J. Payne , G. F. Gilmore

We analyze ages and metallicities for some 5.5 million stars distributed throughout the Large Magellanic Cloud (LMC) main body, obtained from CCD Washington CT1 photometry. We produce a comprehensive field star Age-Metallicity Relationship…

Astrophysics of Galaxies · Physics 2015-06-11 Andrés E. Piatti , Doug Geisler

We present new analysis of 11 intermediate-age (1-2 Gyr) star clusters in the Large Magellanic Cloud based on Hubble Space Telescope imaging data. Seven of the clusters feature main sequence turnoff (MSTO) regions that are wider than can be…

Solar and Stellar Astrophysics · Physics 2015-05-28 Paul Goudfrooij , Thomas H. Puzia , Rupali Chandar , Vera Kozhurina-Platais

We report new photometry for the cluster NGC 2121 in the Large Magellanic Cloud, which shows a prominent hydrogen core exhaustion gap at the turnoff, and a descending subgiant branch remniscent of Galactic open clusters. We achieve an…

Astrophysics · Physics 2009-11-06 R. Michael Rich , Michael M. Shara , David Zurek

The distribution of size as a function of age observed for star clusters in the Large Magellanic Cloud (LMC) is very puzzling: young clusters are all compact, while the oldest systems show both small and large sizes. It is commonly…

Astrophysics of Galaxies · Physics 2019-09-06 F. R. Ferraro , B. Lanzoni , E. Dalessandro , M. Cadelano , S. Raso , A. Mucciarelli , G. Beccari , C. Pallanca , -

We present in this study flux-calibrated integrated spectra in the range 3600-6800A for 18 concentrated SMC clusters. Cluster reddening values were estimated by interpolation between the extinction maps of Burstein & Heiles (1982, AJ, 87,…

Astrophysics · Physics 2009-11-11 A. E. Piatti , J. F. C. Santos , J. J. Claria , E. Bica , A. V. Ahumada , M. C. Parisi

We model the dynamical interaction between the Small and Large Magellanic Clouds and their corresponding stellar cluster populations. Our goal is to explore whether the lack of old clusters ($\gtrsim 7$ Gyr) in the Small Magellanic Cloud…

Astrophysics of Galaxies · Physics 2015-06-16 Daniel D. Carpintero , Facundo A. Gómez , Andrés E. Piatti