Optical Identification of the ASCA Lynx Deep Survey: An Association of Quasi-Stellar Objects and a Supercluster at z=1.3?

@article{Ohta2003OpticalIO,
  title={Optical Identification of the ASCA Lynx Deep Survey: An Association of Quasi-Stellar Objects and a Supercluster at z=1.3?},
  author={Kouji Ohta and Masayuki Akiyama and Yoshihiro Ueda and Toru Yamada and Kouichiro Nakanishi and Gavin B. Dalton and Yasushi Ogasaka and Tsuneo Kii and Kiyoshi Hayashida},
  journal={The Astrophysical Journal},
  year={2003},
  volume={598},
  pages={210-215}
}
Results of optical identification of the ASCA Lynx Deep Survey are presented. Six X-ray sources are detected in the 2-7 keV band using the Solid-State Imaging Spectrometer in a ~20' × 20' field of view with fluxes larger than ~4 × 10-14 ergs s-1 cm-2 in the band. Follow-up optical spectroscopic observations were made, and five out of six sources are identified with active galactic nuclei/quasi-stellar objects (AGNs/QSOs) at redshifts of 0.5-1.3. We also identify two more additional X-ray… 
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