A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA

Results for "galaxies"


  • Wide-angle tail galaxies in ATLAS

    We present radio images of a sample of six Wide-Angle Tail (WAT) radio sources identified in the ATLAS 1.4 GHz radio survey, and new spectroscopic redshifts for four of these sources. These WATs are in the redshift range of 0.1469 - 0.3762, and we find evidence of galaxy overdensities in the vici...

    Tags: atlas, galaxies, wats, wat

    3190 days ago

  • Low Surface Brightness Galaxies in the SDSS: the link between environment, star-forming properties and AGN

    Using the Sloan Digital Sky Survey (SDSS) data release 4 (DR 4), we investigate the spatial distribution of low and high surface brightness galaxies (LSBs and HSBs, respectively). In particular, we focus our attention on the influence of interactions between galaxies on the star formation strengt...

    Tags: sdss, agn, galaxies

    3128 days ago

  • PyMorph: Automated Galaxy Structural Parameter Estimation using Python

    We present a new software pipeline -- PyMorph -- for automated estimation of structural parameters of galaxies. Both parametric fits through a two dimensional bulge disk decomposition as well as structural parameter measurements like concentration, asymmetry etc. are supported. The pipeline is de...

    Tags: python, galaxies, mnras, arxiv, extragalactic astrophysics, methods

    3125 days ago

  • Probing the first galaxies with the SKA

    Observations of anisotropies in the brightness temperature of the 21 cm line of neutral hydrogen from the period before reionization would shed light on the dawn of the first stars and galaxies. In this paper, we use large-scale semi-numerical simulations to analyse the imprint on the 21 cm signa...

    Tags: cosmology, extragalactic astrophysics, arxiv, ska, galaxies

    3084 days ago