Publications of The Korean Astronomical Society (천문학논총)

The Korean Astronomical Society (한국천문학회)
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ANGULAR CLUSTERING OF FIR-SELECTED GALAXIES IN THE AKARI ALL-SKY SURVEY

  • Pollo, A. (Astronomical Observatory of the Jagiellonian University) ;
  • Takeuchi, T.T. (Division of Particle and Astroph. Science, Nagoya University) ;
  • Suzuki, T.L. (Division of Particle and Astroph. Science, Nagoya University) ;
  • Oyabu, S. (Division of Particle and Astroph. Science, Nagoya University)
  • Received : 2012.06.29
  • Accepted : 2012.08.15
  • Published : 2012.09.16
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Abstract

We present the first measurement of the angular two-point correlation function for AKARI $90{\mu}m$ point sources, detected outside of the Milky Way plane and selected as candidates for extragalactic sources. This is the first measurement of the large-scale angular clustering of galaxies selected in the far-infrared after IRAS. We find a positive clustering signal in both hemispheres extending up to ~ 40 degrees, without any significant fluctuations at larger scales. The observed correlation function is well fitted by a power law function. However, southern galaxies seem to be more strongly clustered than northern ones and the difference is statistically significant. The reason for this difference - technical or physical - is still to be found.

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References

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