The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 35 Issue 2
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- Pages.37.2-37.2
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- 2010
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- 1226-2692(pISSN)
Current Status of the Infrared Medium Deep Survey
- Jun, Hyun-Sung (CEOU/Dept. of Physics and Astronomy, Seoul National University) ;
- Jeon, Yi-Seul (CEOU/Dept. of Physics and Astronomy, Seoul National University) ;
- Im, Myung-Shin (CEOU/Dept. of Physics and Astronomy, Seoul National University) ;
- CEOUIMSteam, CEOUIMSteam (CEOU/Dept. of Physics and Astronomy, Seoul National University)
- Published : 2010.10.06
Abstract
The IMS (Infrared or Intermediate-wide, Medium-deep Survey) program for the search of z~7 quasars has been running since last year. In order to discover enough number of quasars at z~7, a strategy sufficing both survey area (~150 square deg.) and image depth (23 AB mag in J filter), together with using existing multi-wavelength data is chosen. We have been carrying imaging observations with the UKIRT 4m telescope, now covering ~50 square deg. (including UKIDSS survey area) of J-band data. We then used selection in color-color space to choose high-z quasar candidates having the rest-frame Ly-alpha break, and to exclude contamination from stars and galaxies at low-z. We show quasar candidates of redshift z~7 and z~6, out of 25 square deg. data analyzed, and note implications and future plans.
Keywords