Discovery of Bright Quasars at Low Galactic Latitude

Physics – Optics

Scientific paper

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Scientific paper

We report the discovery of 11 new bright quasars at low galactic latitude from the Seoul National University Quasar Survey in Optical (SNUQSO). Traditionally, quasars have been searched at high galactic latitude because of the severe stellar contamination at low galactic latitude.
As a part of SNUQSO, we are undertaking a survey of low galactic latitude quasars, in order to (i) provide a complete census of quasar population; (ii) to discover quasars with bright stars nearby for efficient adaptive optics study for their host galaxy properties; and (iii) to study the galactic matters using quasar spectra.
We have made an algorithm to find quasars at low galactic latitude using multi-wavelength data, and observed the candidates with the long-slit spectrograph on the 1.8m telescope and long-slit spectrograph at Mt. Bohyun Optical Astronomy Observatory (BOAO). We present newly discovered bright quasars at the zone-of-avoidance. Our result demonstrate that the new algorithm is highly efficient at selecting quasars at low galactic latitude.

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