activity
20152020
most citedRest-frame Optical Spectra and Black Hole Masses of 3<z<6 Quasars

74 citations · 154 across the 6 of their papers we have counts for

collaborators

12 papers

astro-ph.GA2020

The Infrared Medium-deep Survey. VIII. Quasar Luminosity Function at

Yongjung Kim, Myungshin Im, Yiseul Jeon +27

Faint quasars with mag are known to be the potentially important contributors to the ultraviolet ionizing background in the post-reionization era. Howeve…

astro-ph.GA20209 cited

Gemini Multi-Object Spectrograph Integral Field Unit Spectroscopy of the Double-peaked Broad Emission Line of a Red Active Galactic Nucleus

Dohyeong Kim, Myungshin Im, Minjin Kim +1

Galaxy mergers are expected to produce multiple supermassive black holes (SMBHs) in close-separation, but the detection of such SMBHs has been difficult. 2MASS J165939.7183436 i…

astro-ph.GA2020

The Infrared Medium-deep Survey. \Romannum{7}. Faint Quasars at in the ELAIS-N1 Field

Suhyun Shin, Myungshin Im, Yongjung Kim +26

The intergalactic medium (IGM) at 5 to 6 is largely ionized, and yet the main source for the IGM ionization in the early universe is uncertain. Of the possible contributors…

astro-ph.GA201910 cited

More connected, more active: galaxy clusters and groups at z~1 and the connection between their quiescent galaxy fractions and large-scale environments

Seong-Kook Lee, Myungshin Im, Minhee Hyun +4

High-redshift galaxy clusters, unlike local counterparts, show diverse star formation activities. However, it is still unclear what keeps some of the high-redshift clusters active…

astro-ph.GA201814 cited

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

Dohyeong Kim, Myungshin Im, Gabriela Canalizo +6

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

astro-ph.GA2018

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

Yongjung Kim, Myungshin Im, Yiseul Jeon +25

The faint quasars with 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…