The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 37 Issue 2
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- Pages.83.2-83.2
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- 2012
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- 1226-2692(pISSN)
Missing Type I AGNs in the local universe
- Kim, Ji Gang (Gyeonggi Science High School) ;
- Kim, Jae Hyuk (Gyeonggi Science High School) ;
- Lee, Seung Eon (Gyeonggi Science High School) ;
- Park, Daeseong (Astronomy Program, Department of Physics and Astronomy, Seoul National University) ;
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Woo, Jong-Hak
(Astronomy Program, Department of Physics and Astronomy, Seoul National University) ;
- Kwon, HongJin (Gyeonggi Science High School)
- Published : 2012.10.17
Abstract
Type I AGNs are classified by the presence of broad emission lines while Type II AGNs show narrow emission lines only. All-sky surveys such as SDSS provide large AGN samples for statistical studies. However, the AGN samples suffer selection bias due to the incomplete selection criteria. To investigate the missing Type I AGNs in optical spectroscopic surveys, we start with a sample of SDSS Type II AGNs at 0.02 < z < 0.05, using the MPA-JHU SDSS DR7 catalog. We search for the hidden broad
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