The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Searching for Dwarf Galaxies in NGC 1291 obtained with KMTNet

  • Byun, Woowon (Korea Astronomy and Space Science Institute) ;
  • Kim, Minjin (Korea Astronomy and Space Science Institute) ;
  • Sheen, Yun-Kyeong (Korea Astronomy and Space Science Institute) ;
  • Park, Hong Soo (Korea Astronomy and Space Science Institute) ;
  • Ho, Luis C. (Kavli Institute for Astronomy and Astrophysics) ;
  • Lee, Joon Hyeop (Korea Astronomy and Space Science Institute) ;
  • Jeong, Hyunjin (Korea Astronomy and Space Science Institute) ;
  • Kim, Sang Chul (Korea Astronomy and Space Science Institute) ;
  • Park, Byeong-Gon (Korea Astronomy and Space Science Institute) ;
  • Seon, Kwang-Il (Korea Astronomy and Space Science Institute) ;
  • Ko, Jongwan (Korea Astronomy and Space Science Institute)
  • Published : 2018.10.10
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Abstract

We present newly discovered dwarf galaxy candidates in deep and wide-field images of NGC 1291 obtained with KMTNet. Through a visual inspection, we find ~ 13 candidates, for which central surface brightness ranges from ${\mu}_{0,R}{\sim}22.5$ to $26.5mag\;arcsec^{-1}$. Adopting the distance to NGC 1291, the candidate dwarfs are brighter than $M_R=-12.5mag$ and their effective radii range from 350 pc to 1.4 kpc. Structural and photometric properties of dwarf candidates near NGC 1291 appears to be consistent with those of ordinary dwarf galaxies in nearby galaxies. We conduct the imaging simulation in order to find an optimal way to detect dwarf galaxies in KMTNet images and to test the completeness of our detection algorithm. We plan to apply this method to deep KMTNet images of other nearby galaxies obtained through KMTNet Nearby Galaxy Survey (KNGS).

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