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The Korean Astronomical Society (한국천문학회)
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MIR LUMINOSITY FUNCTION OF GALAXIES IN THE NEP-WIDE FIELD

  • Kim, Seong Jin (Department of Physics and Astronomy, Seoul National University) ;
  • Lee, Hyung Mok (Department of Physics and Astronomy, Seoul National University) ;
  • Jeong, Woong-Seob (Space Science Divison, KASI) ;
  • NEP team (Department of Physics and Astronomy, Seoul National University)
  • Received : 2015.08.28
  • Accepted : 2016.10.25
  • Published : 2017.03.31
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Abstract

We present the mid-infrared (MIR) luminosity function (LF) of local (z < 0.3) star-forming (SF) galaxies in the North Ecliptic Pole (NEP) field. This work is based on the NEP-Wide point source catalogue and the spectroscopic redshift (z) data for ~ 1700 galaxies obtained by the optical follow-up survey with MMT/Hectospec and WIYN/Hydra. The AKARI's continuous $2-24{\mu}m$ coverage and the spectroscopic redshifts enable us to determine the spectral energy distribution (SED) in the mid-infrared and derive the luminosity functions of galaxies. Our $8{\mu}m$ LF finds good agreements with the results from SWIRE field over the wide luminosity range, while showing significant difference from the NOAO deep data in the faint end. The comparison with higher-z sample shows significant luminosity evolution from z > 0.3 to local universe. $12{\mu}m$ LF also shows a clear indication of luminosity evolution.

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References

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