천문학회보 (The Bulletin of The Korean Astronomical Society)

한국천문학회 (The Korean Astronomical Society)
권호 표지

KINGS: A Preliminary Result of the Fornax cluster

  • Lee, JaeHyung (Department of Physics and Astronomy, Seoul National University) ;
  • Lee, Myung Gyoon (Department of Physics and Astronomy, Seoul National University) ;
  • lim, Sungsoon (Department of Astronomy, Peking University) ;
  • Sohn, Jubee (Smithsonian Center for Astrophysical Observatory) ;
  • Jang, In Sung (Department of Physics and Astronomy, Seoul National University) ;
  • Ryu, Jinhyuk (Department of Physics and Astronomy, Seoul National University) ;
  • Lee, wang-Ho (Department of Physics and Astronomy, Seoul National University) ;
  • Ko, Youkyung (Department of Physics and Astronomy, Seoul National University) ;
  • Lee, Jung Hwan (Department of Physics and Astronomy, Seoul National University)
  • 발행 : 2016.04.12
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초록

We present a preliminary result of the Fornax cluster survey as a part of the KMTNet Intensive Nearby Southern Galaxy Group Survey (KINGS). We discovered about 200 new dwarf galaxy candidates from the survey of the $8^{\circ}{\times}6^{\circ}$ area around the Fornax cluster. They have magnitudes ranging from V=17.5 to 22 mag (Mv = -13.8 to -9.3), and they are almost complete to V = 20 mag. Surface brightness profiles of most of these galaxies are fit well by a Sersic law with n ~ 1.0. Structural parameters of these galaxies follow well the scaling relations of dwarf galaxies in the fundamental plane. The color-magnitude diagram of these galaxies shows that they are mostly located at the faint end of the red sequence, indicating that they are the probable member of the Fornax cluster. We also derive a luminosity function of the Fornax cluster by combining the new galaxies with the known galaxies in the previous catalogs. We will discuss the future of the KINGS-Fornax.

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