Seoul National University Bright Quasar Survey in Optical (SNUQSO)

Details Seoul National University Bright Quasar Survey in Optical (SNUQSO) Seoul National University Bright Quasar Survey in Optical (SNUQSO)

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21344703l&link_type=abstract

American Astronomical Society, AAS Meeting #213, #447.03; Bulletin of the American Astronomical Society, Vol. 41, p.333

Physics

Optics

Scientific paper

We present the result of second phase of Seoul National University Bright Quasar Survey in Optical (SNUQSO). From this survey, we discovered 173 new bright quasars/Seyferts (0.0516.5 magnitude at low Galactic latitude except for Galactic center region. The observation were carried out using the 1.8m telescope at the Bohyunsan Optical Astronomy Observatory (BOAO), the 2.1m telescope at the Kitt Peak National Observatory (KPNO), and the 1.8m telescope at the IUCAA Girawali Observatory for the Northern hemisphere, and the 1.5m telescope at the Cerro Tololo Inter-American Observatory (CTIO) for the Southern hemisphere, during 2006-2008. We found that the efficiency depends on NIR color. For candidates within 1.4 < J-K < 2.3, we can search quasars/Seyferts with >40% of efficiency. We found also that the surface number density of the quasars/Seyferts we discovered is 0.016 deg^(-2), and comparable with or slightly less than other quasar survey programs which use radio information. These objects will be useful for many astrophysical applications, such as (i) building a complete census of quasar population; (ii) studying the Galactic matters using absorption lines; (iii) studying stellar proper motion using these objects as reference points; and (iv) studying AGN host galaxies using adaptive optics (AO) with many bright stars nearby for a better AO PSF characterization.

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