Navegação Artigos de Periódicos por Assunto "Nuvens de magalhaes"
Resultados 1-20 de 22
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Ages and metallicities of lmc and smc red clusters through hb and g band photometry
(1986) [Artigo de periódico]We present narrow band integrated photometry of the Hβ and G band absorption features for 41 LMC and 10 SMC red star clusters. An age-metallicity calibration is provided for the color-color diagram. We derive SWB types ... -
Birds of a Feather? : Magellan/IMACS spectroscopy of the ultra-faint satellites Grus II, Tucana IV, and Tucana V
(2020) [Artigo de periódico]We present Magellan/IMACS spectroscopy of three recently discovered ultra-faint Milky Way satellites, Grus II, Tucana IV, and Tucana V. We measure systemic velocities of vhel =- 110.0 0.5 - km s 1 , = - + vhel 15.9 1.7 ... -
Blue magellanic clusters : near-infrared spectral evolution
(1990) [Artigo de periódico]We present new integrated spectra in the range 5600-10000 Å for 28 LMC and 3 SMC young star clusters. We measure the equivalent widths (W) of prominent features and the continuum distribution. The analysis, supplemented ... -
Blue-violet spectral evolution of young magellanic cloud clusters
(1995) [Artigo de periódico]We study the integrated spectral evolution in the blue-violet range of 97 blue star clusters in the Magellanic Clouds, from those associated with gas emission to those as old as a few hundred Myr. Some clusters are dominated ... -
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses
(2015) [Artigo de periódico]We obtained Southern Astrophysical Research telescope B and V photometry of 14 star clusters and two associations in the Bridge tidal structure connecting the Large and Small Magellanic Cloud (LMC and SMC). These objects ... -
Dynamical studies of cluster pairs in the magellanic clouds
(1998) [Artigo de periódico]We performed N-body simulations of star cluster encounters with Hernquist’s TREECODE in a CRAY YMP-2E computer under different initial conditions (relative positions and velocities, cluster sizes, masses and concentration ... -
A general catalogue of extended objects in the Magellanic System
(2008) [Artigo de periódico]We update the Small Magellanic Cloud (SMC), Bridge and Large Magellanic Cloud (LMC) catalogues of extended objects that were constructed by members of our group from 1995 to 2000. In addition to the rich subsequent literature ... -
Measurements of the equivalent width of the h/sub beta/ emission line and age determination of hii regions of the lmc and smc
(1981) [Artigo de periódico]The equivalent width of the emission line Hβ was measured photoelectrically in 29 H II regions of the LMC and 2 of the SMC respectively. The age of these regions was obtained through a calibration of Wʜβ. A relation was ... -
On the calibration of the COBE/IRAS dust emission reddening maps
(2003) [Artigo de periódico]In this work we study the spectral properties (3600–6800 Å) of the nuclear region of early-type galaxies at low (|b| < 25◦), intermediate (including surroundings of the Magellanic Clouds) and high (South Polar Cap) Galactic ... -
Physical parameters of 15 intermediate-age LMC clusters from modelling of HST colour-magnitude diagrams
(2007) [Artigo de periódico]Aims. We analyzed HST/WFPC2 colour–magnitude diagrams (CMDs) of 15 populous Large Magellanic Cloud (LMC) stellar clusters with ages between ~0.3 Gyr and ~3 Gyr. These (V, B − V) CMDs are photometrically homogeneous and ... -
Physical parameters of rich LMC clusters from modeling of deep HST colour-magnitude diagrams
(2005) [Artigo de periódico]We present the analysis of deep colour–magnitude diagrams (CMDs) of five rich LMC clusters. The data were obtained with HST/WFPC2 in the F555W (~V) and F814W (~I) filters, reaching V₅₅₅ ~ 25. The sample of clusters is ... -
Probing the Large Magellanic Cloud age gap at intermediate cluster masses
(2010) [Artigo de periódico]The Large Magellanic Cloud (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 and 10 Gyr. But this feature ... -
A search for old star clusters in the large magellanic cloud
(1997) [Artigo de periódico]There are only a handful of known star clusters in the LMC that are genuinely old, i.e., of similar age to the globular star clusters in the Milky Way. We report the first results of a color-magnitude diagram survey of 25 ... -
Spectral evolution of star clusters in the Large Magellanic Cloud : I. blue concentrated clusters in the range 40-300 Myr
(2006) [Artigo de periódico]Aims. Integrated spectroscopy of a sample of 17 blue concentrated Large Magellanic Cloud (LMC) clusters is presented and its spectral evolution studied. The spectra span the range ≈(3600−6800) Å with a resolution of ≈14Å ... -
Star formation in distant starburst galaxies
(2000) [Artigo de periódico]This paper discusses the stellar population content of distant (5 000kms−1 VR 16 000kms−1) galaxies with enhanced star-formation activity. Distinction is made between isolated galaxies and galaxies morphologically disturbed, ... -
Structures in surface-brightness profiles of LMC and SMC star clusters : evidence of mergers?
(2008) [Artigo de periódico]Context. The LMC and SMC are rich in binary star clusters, and some mergers are expected. It is thus important to characterise single clusters, binary clusters and candidates for mergers. Aims. We selected a sample of star ... -
The VISCACHA survey : III. Star clusters counterpart of the Magellanic Bridge and Counter-Bridge in 8D
(2021) [Artigo de periódico]Context. The interactions between the Small and Large Magellanic Clouds (SMC and LMC) created the Magellanic Bridge; a stream of gas and stars pulled out of the SMC towards the LMC about 150 Myr ago. The tidal counterpart ... -
The VISCACHA survey : II. Structure of star clusters in the Magellanic clouds periphery
(2020) [Artigo de periódico]We provide a homogeneous set of structural parameters of 83 star clusters located at the periphery of the Small Magellanic Cloud (SMC) and the Large Magellanic Cloud (LMC). The clusters’ stellar density and surface brightness ... -
The VISCACHA survey : I. Overview and first results
(2019) [Artigo de periódico]The VISCACHA(VIsible Soar photometry of star Clusters in tApii and Coxi HuguA) Survey is an ongoing project based on deep photometric observations of Magellanic Cloud star clusters, collected using the SOuthern Astrophysical ... -
The VISCACHA survey : IV. The SMC West Halo in 8D
(2022) [Artigo de periódico]The structure of the Small Magellanic Cloud (SMC) is very complex, in particular in the periphery that suffers more from the interactions with the Large Magellanic Cloud (LMC). A wealth of observational evidence has been ...
