Publications of The Korean Astronomical Society (천문학논총)

The Korean Astronomical Society (한국천문학회)
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KVN PHASE REFERENCING OBSERVATIONS OF THE VIRGO CLUSTER

  • TREMOU, EVANGELIA (Department of Astronomy and Yonsei University Observatory, Yonsei University) ;
  • JUNG, TAEHYUN (Korea Astronomy and Space Science Institute) ;
  • CHUNG, AEREE (Department of Astronomy and Yonsei University Observatory, Yonsei University) ;
  • SOHN, BONG WON (Korea Astronomy and Space Science Institute)
  • Received : 2014.11.30
  • Accepted : 2015.06.30
  • Published : 2015.09.30
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Abstract

By probing nuclear regions and the overall properties of AGN hosts as a function of their environments, we aim to observationally examine how AGN activities are related to their surroundings. We have selected a representative sample of AGN hosts in the Virgo cluster. The selected galaxies are located in a range of density regions showing various morphologies in 1.4 GHz continuum emission. High-resolution observations with the Korean VLBI Network (KVN) allow us to access the inner region of the AGN without suffering from dust extinction and synchrotron self-absorption. Since a number of our targets are too weak to be detected at K-band (22 GHz) within their coherence time, we applied phase referencing to calibrate fast atmospheric phase fluctuations.

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References

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