activity
20092024
most citedA statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys

214 citations · 1.6k across the 43 of their papers we have counts for

collaborators
Showing 2015Show all

6 papers · 1 filter

astro-ph.GA2015★ 12 cited

Rest-frame UV single-epoch black hole mass estimates of low-luminosity AGN at intermediate redshifts

Marios Karouzos, Jong-Hak Woo, Kenta Matsuoka +6

The ability to accurately derive black hole (BH) masses at progressively higher redshifts and over a wide range of continuum luminosities has become indispensable in the era of lar…

astro-ph.GA2015★ 15 cited

The sign of active galactic nucleus quenching in a merger remnant with radio jets

Kohei Ichikawa, Junko Ueda, Megumi Shidatsu +2

We investigate optical, infrared, and radio active galactic nucleus (AGN) signs in the merger remnant Arp 187, which hosts luminous jets launched in the order of yr ago but…

astro-ph.GA2015★ 9 cited

Near-Infrared Spectroscopy of Quasars at z~3 and Estimates of Their Supermassive Black Hole Masses

Yuriko Saito, Masatoshi Imanishi, Yosuke Minowa +8

We present the results of new infrared spectroscopic observations of 37 quasars at z~3, selected based on the optical r'-band magnitude and the availability of nearby bright stars…

astro-ph.GA2015★ 15 cited

The Quasar-LBG Two-point Angular Cross-correlation Function at z ~ 4 in the COSMOS Field

H. Ikeda, T. Nagao, Y. Taniguchi +15

In order to investigate the origin of quasars, we estimate the bias factor for low-luminosity quasars at high redshift for the first time. In this study, we use the two-point angul…

astro-ph.GA2015

Far-infrared and accretion luminosities of the present-day active galactic nuclei

Kenta Matsuoka, Jong-Hak Woo

We investigate the relation between star formation (SF) and black hole accretion luminosities, using a sample of 492 type-2 active galactic nuclei (AGNs) at z < 0.22, which are det…

astro-ph.GA2015★ 1 cited

Rest-frame Optical Emission Lines in Far-Infrared Selected Galaxies at z<1.7 from the FMOS-COSMOS Survey

Jeyhan S. Kartaltepe, D. B. Sanders, J. D. Silverman +15

We have used FMOS on Subaru to obtain near-infrared spectroscopy of 123 far-infrared selected galaxies in COSMOS and obtain the key rest-frame optical emission lines. This is the l…