English
Related papers

Related papers: No stellar age gradient inside supergiant shell LM…

200 papers

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 have studied the properties of the stellar populations in the field of the NGC 346 cluster in the Small Magellanic Cloud, using the results of a novel self-consistent method that provides a reliable identification of pre-main sequence…

Solar and Stellar Astrophysics · Physics 2015-05-28 Guido De Marchi , Nino Panagia , Elena Sabbi

In this work we estimate, for the first time, the total masses and mass function slopes of a sample of 29 young and intermediate-age SMC clusters from CCD Washington photometry. We also derive age, interstellar reddening and structural…

Astrophysics of Galaxies · Physics 2015-06-17 F. F. S. Maia , A. E. Piatti , J. F. C. Santos

We perform population synthesis modelling of a magnitude-limited sample of 4391 Luminous Red Galaxies selected from the Sloan Digital Sky Survey Data Release 4 (SDSS DR4). We fit measured spectral indices using a large library of high…

Astrophysics · Physics 2008-11-26 T. Barber , A. Meiksin , T. Murphy

We present high resolution (~2.5'') CO(1-0) and CO(2-1) images of the central kiloparsec of NGC 3077 made with the Owens Valley Millimeter Array. CO emission is distributed in three major complexes which resolve into at least seven GMCs.…

Astrophysics · Physics 2009-11-06 David S. Meier , Jean L. Turner , Sara C. Beck

We present the clump populations detected in 18 lensed galaxies at redshifts 1 to 8.5 within the lensing cluster field SMACS0723. The recent JWST Early Release Observations of this poorly known region of the sky have revealed numerous…

We present Washington system colour-magnitude diagrams (CMDs) for 17 practically unstudied star clusters located in the bar as well as in the inner disc and outer regions of the Large Magellanic Cloud (LMC). Cluster sizes were estimated…

Solar and Stellar Astrophysics · Physics 2015-06-24 Tali Palma , Juan J. Clariá , Doug Geisler , Luciana V. Gramajo , Andrea V. Ahumada

We present the star formation history (SFH) of the isolated (D~970 kpc) Local Group dwarf galaxy WLM measured from color-magnitude diagrams constructed from deep Hubble Space Telescope imaging. Our observations include a central (0.5 $r_h$)…

We present new near-infrared spectroscopic observations of the outer edges of the young stellar cluster around the supermassive black hole at the Galactic center. The observations show a break in the surface-density profile of young stars…

Astrophysics of Galaxies · Physics 2015-08-06 Morten N. Støstad , Tuan Do , Norm Murray , Jessica R. Lu , Sylvana Yelda , Andrea M. Ghez

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 typically reach V \~ 22.…

Astrophysics · Physics 2009-11-11 L. O. Kerber , B. X. Santiago , E. Brocato

We present analysis of HST U,V,I, and Halpha images of the peculiar Local Group irregular galaxy IC 10. The images are used to determine the nature of the stellar products in a portion of the recent starburst in this galaxy. We identified…

Astrophysics · Physics 2009-11-06 Deidre A. Hunter

The pace and pattern of star formation leading to rich young stellar clusters is quite uncertain. In this context, we analyze the spatial distribution of ages within 19 young (median t<3 Myr on the Siess et al. (2000) timescale),…

The Magellanic Clouds are the most massive and closest satellite galaxies of the Milky Way, with stars covering ages from a few Myr up to 13 Gyr. This makes them important for validating integrated light methods to study stellar populations…

<Context.> Nuclear star clusters (NSCs) at the dynamical center of galaxies appear to have a complex star formation history. This suggests repeated star formation even in the influence of the strong tidal field from supermassive black…

Astrophysics of Galaxies · Physics 2016-03-16 Shogo Nishiyama , Rainer Schoedel , Tatsuhito Yoshikawa , Tetsuya Nagata , Yosuke Minowa , Motohide Tamura

We present Washington system C,T_1 CMDs of 13 star clusters and their surrounding fields which lie in the outer parts of the LMC disk. Ages are determined by means of the magnitude difference between the giant branch clump and the turnoff,…

We have studied the stellar populations in a region of 30 pc around SN 1987A in the Large Magellanic Cloud using multi-band HST-WFPC2 images. The effective temperature, luminosity and reddening of each detected star were determined by…

Astrophysics · Physics 2007-05-23 Martino Romaniello , Nino Panagia , Salvatore Scuderi

The Magellanic Clouds are nearby dwarf irregular galaxies whose morphologies show different properties when traced by different stellar populations, making them an important laboratory for studying galaxy morphologies. We study the…

We present results based on YJKs photometry of star clusters located in the outermost, eastern region of the Small Magellanic Cloud (SMC). We analysed a total of 51 catalogued clusters whose colour--magnitude diagrams (CMDs), having been…

Astrophysics of Galaxies · Physics 2015-06-24 A. E. Piatti , R. de Grijs , S. Rubele , M. R. Cioni , V. Ripepi , L. Kerber

Young stellar populations provide a powerful record that traces millions of years of star formation history in the solar neighborhood. Using a revised form of the SPYGLASS young star identification methodology, we produce an expanded census…

Astrophysics of Galaxies · Physics 2023-07-12 Ronan Kerr , Adam Kraus , Aaron Rizzuto

We have used Washington photometry for 90 star cluster candidates of small angular size -typically ~ 11" in radius- distributed within nine selected regions in the inner disc of the Large Magellanic Cloud (LMC) to disentangle whether they…

Astrophysics of Galaxies · Physics 2015-06-19 Andres E. Piatti
‹ Prev 1 4 5 6 7 8 10 Next ›