Navegação Ciências Exatas e da Terra por Assunto "Magellanic clouds"
Resultados 1-20 de 49
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Ages and metallicities of eight star clusters and their surrounding fields in the inner disc of the Large Magellanic Cloud
(2003) [Artigo de periódico]We present Washington system colour–magnitude diagrams for 8 star clusters and their surrounding fields which, with one exception, lie within the inner parts of the Large Magellanic Cloud (LMC) disc. Careful attention is ... -
Ages and metallicities of five intermediate-age star clusters projected towards the Small Magellanic Cloud
(2001) [Artigo de periódico]Colour–magnitude diagrams are presented for the first time for L32, L38, K28 (L43), K44 (L68) and L116, which are clusters projected on to the outer parts of the Small Magellanic Cloud (SMC). The photometry was carried out ... -
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 ... -
Ages and metallicities of star clusters and surrounding fiels in the outer disk of the Large Magellanic Cloud
(1998) [Artigo de periódico]We present Washington system CT1 color-magnitude diagrams of 13 star clusters and their surrounding fields that lie in the outer parts of the LMC disk (r>4°), as well as a comparison inner cluster. The total area covered ... -
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 ... -
BS 196 : an old star cluster far from the Small Magellanic Cloud main body
(2008) [Artigo de periódico]We present B and V photometry of the outlying Small Magellanic Cloud (SMC) star cluster BS 196 with the 4.1-m SOAR telescope. The photometry is deep (to V≈25), showing ≈ 3 mag below the cluster turnoff point at MV = 2.5 ... -
Carbon stars in lmc clusters revisited
(1996) [Artigo de periódico]Examining the available data for AGB stars in the Large Magellanic Cloud (LMC) clusters, we address the question about the mass interval of low- and intermediate-mass stars which eventually evolve into carbon stars (C ... -
Constraining the LMC cluster age gap : Washington photometry of NGC 2155 and SL 896 (LW 480)
(2002) [Artigo de periódico]We carried out Washington system photometry of the intermediate-age Large Magellanic Cloud (LMC) star clusters NGC2155 and SL 896 (LW480). We derive ages and metallicities from the T1 versus C - T1 colour–magnitude diagrams ... -
A dark energy camera search for missing supergiants in the LMC after the advanced LIGO gravitational-wave event GW150914
(2016) [Artigo de periódico]The collapse of a stellar core is expected to produce gravitational waves (GWs), neutrinos, and in most cases a luminous supernova. Sometimes, however, the optical event could be significantly less luminous than a supernova ... -
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 ... -
Final stages of N-body star cluster encounters
(2000) [Artigo de periódico]We performed numerical simulations of star cluster encounters with Hernquist's treecode on a CRAY YMP-2E computer. We used different initial conditions (relative positions and velocities, cluster sizes, masses and concentration ... -
Fundamental parameters of the LMC clusters NGC 1836, NGC 1860, NGC 1865, SL 444, LW 224 and SL 548
(2003) [Artigo de periódico]Complementing our recent Washington photometric studies on intermediate age and young Large Magellanic Cloud (LMC) clusters, we now turn our attention to six previously unstudied star clusters in the transition range 200–700 ... -
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 ... -
Hierarchical structures in the Large and Small Magellanic Clouds
(2010) [Artigo de periódico]We investigate the degree of spatial correlation among extended structures in the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC). To this purpose, we work with subsamples characterized by different properties ... -
Hst observations of the field star population in the large magellanic cloud
(1997) [Artigo de periódico]We present V and I photometry, obtained with the Hubble Space Telescope, for ~ 15 800 stars in a field in the inner disc of the Large Magellanic Cloud. We confirm previous results indicating that an intense star formation ... -
Integrated spectral analysis of 18 concentrated star clusters in the Small Magellanic Cloud
(2005) [Artigo de periódico]We present in this study flux-calibrated integrated spectra in the range (3600–6800) Å for 18 concentrated SMC clusters. Cluster reddening values were estimated by interpolation between the extinction maps of Burstein & ... -
Integrated UBV photometry of 624 star clusters and associations in the Large Magellanic Cloud
(1996) [Artigo de periódico]We present a catalogof integrated UBV photometry of 504 star clusters and 120 stellar associations in the LMC, part ofthem still embedded in emitting gas. We study age groups in terms of equivalent SWB types derived from ...
