The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Quantitative Morphology of High Redshift Galaxies Using GALEX Ultraviolet Images of Nearby Galaxies

  • Yeom, Bum-Suk (Department of Astronomy and Space Science, Chungnam National University) ;
  • Rey, Soo-Chang (Department of Astronomy and Space Science, Chungnam National University) ;
  • Kim, Young-Kwang (Department of Astronomy and Space Science, Chungnam National University) ;
  • Kim, Suk (Department of Astronomy and Space Science, Chungnam National University) ;
  • Lee, Young-Dae (Department of Astronomy and Space Science, Chungnam National University)
  • Published : 2011.10.05
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Abstract

An understanding of the ultraviolet (UV) properties of nearby galaxies is essential for interpreting images of high redshift systems. In this respect, the prediction of optical-band morphologies at high redshifts requires UV images of local galaxies with various morphologies. We present the simulated optical images of galaxies at high redshifts using diverse and high-quality UV images of nearby galaxies obtained through the Galaxy Evolution Explorer (GALEX). We measured CAS (concentration, asymmetry, clumpiness) as well as Gini/M20 parameters of galaxies at near-ultraviolet (NUV) and simulated optical images to quantify effects of redshift on the appearance of distant stellar systems. We also discuss the change of morphological parameters with redshift.

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