Y. C. Taak

activity

20142026

most citedDiscovery of A Faint Quasar at z~6 and Implications for Cosmic Reionization

43 citations · 214 across the 15 of their papers we have counts for

collaborators

Showing 2018Show all

3 papers · 1 filter

astro-ph.GA2018★ 14 cited

Medium-resolution Optical and Near-Infrared Spectral Atlas of 16 2MASS-selected NIR-red Active Galactic Nuclei at $z \sim 0.3$

Dohyeong Kim, Myungshin Im, Gabriela Canalizo +6

We present medium-resolution spectra ( $R \sim 2000$ --4000) at 0.4--1.0\, $μ$ m and 0.7--2.5\, $μ$ m of 16 active galactic nuclei (AGNs) selected with red color in the near-infrared (NI…

astro-ph.GA2018★ 20 cited

The Infrared Medium-deep Survey. VI. Discovery of Faint Quasars at $z \sim 5$ with a Medium-band-based Approach

Yongjung Kim, Myungshin Im, Yiseul Jeon +25

The faint quasars with $M_{1450} > - 24$ mag are known to hold the key to the determination of the ultraviolet emissivity for the cosmic re-ionization. But only a few have been identi…

astro-ph.GA2018★ 18 cited

The Infrared Medium-deep Survey. IV. Low Eddington Ratio of A Faint Quasar at $z \sim 6$ : Not Every Supermassive Black Hole is Growing Fast in the Early Universe

Yongjung Kim, Myungshin Im, Yiseul Jeon +15

To date, most of the luminous quasars known at $z \sim 6$ have been found to be in maximal accretion with the Eddington ratios, $λ_{Edd} \sim 1$ , suggesting enhanced nuclear activ…

Medium-resolution Optical and Near-Infrared Spectral Atlas of 16 2MASS-selected NIR-red Active Galactic Nuclei at z∼0.3

The Infrared Medium-deep Survey. VI. Discovery of Faint Quasars at z∼5 with a Medium-band-based Approach

The Infrared Medium-deep Survey. IV. Low Eddington Ratio of A Faint Quasar at z∼6: Not Every Supermassive Black Hole is Growing Fast in the Early Universe

Medium-resolution Optical and Near-Infrared Spectral Atlas of 16 2MASS-selected NIR-red Active Galactic Nuclei at $z \sim 0.3$

The Infrared Medium-deep Survey. VI. Discovery of Faint Quasars at $z \sim 5$ with a Medium-band-based Approach

The Infrared Medium-deep Survey. IV. Low Eddington Ratio of A Faint Quasar at $z \sim 6$ : Not Every Supermassive Black Hole is Growing Fast in the Early Universe