activity
20172021
most citedMinor Contribution of Quasars to Ionizing Photon Budget at z~6: Update on Quasar Luminosity Function at the Faint-end with Subaru/Suprime-Cam

68 citations · 198 across the 4 of their papers we have counts for

collaborators

11 papers

astro-ph.GA202127 cited

Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) XII. Extended [C II] Structure (Merger or Outflow) in a z = 6.72 Red Quasar

Takuma Izumi, Masafusa Onoue, Yoshiki Matsuoka +31

We present ALMA [C II] 158 m line and far-infrared (FIR) continuum emission observations toward HSC J120505.09000027.9 (J12050000) at with the beam size of $\si…

astro-ph.CO2020

Subaru medium-resolution spectra of a QSO at z=6.62: Three reionization tests

Ting-Yi Lu, Tomotsugu Goto, Ji-Jia Tang +9

Investigating the Gunn-Peterson trough of high redshift quasars (QSOs) is a powerful way to reveal the cosmic reionization. As one of such attempts, we perform a series of analyses…

astro-ph.GA2019

Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). X. Discovery of 35 Quasars and Luminous Galaxies at 5.7 z 7.0

Yoshiki Matsuoka, Kazushi Iwasawa, Masafusa Onoue +44

We report the discovery of 28 quasars and 7 luminous galaxies at 5.7 z 7.0. This is the tenth in a series of papers from the Subaru High-z Exploration of Low-Luminosity…

astro-ph.GA2019

Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) VIII. A less biased view of the early co-evolution of black holes and host galaxies

Takuma Izumi, Masafusa Onoue, Yoshiki Matsuoka +24

We present ALMA [CII] line and far-infrared (FIR) continuum observations of three low-luminosity quasars () discovered by our Subaru Hyper Suprime-Cam (…

astro-ph.GA2019

Discovery of the First Low-Luminosity Quasar at z > 7

Yoshiki Matsuoka, Masafusa Onoue, Nobunari Kashikawa +45

We report the discovery of a quasar at z = 7.07, which was selected from the deep multi-band imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey.…

astro-ph.GA201936 cited

Rapid Black Hole Growth at the Dawn of the Universe: A Super-Eddington Quasar at z=6.6

Ji-Jia Tang, Tomotsugu Goto, Youichi Ohyama +7

We present the analysis of a new near-infrared (NIR) spectrum of a recently discovered quasar PSO J006+39 in an attempt to explore the early growth of supermassive black…