activity
20132026
most citedSubaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6

224 citations · 4.1k across the 113 of their papers we have counts for

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Showing 2019Show all

13 papers · 1 filter

astro-ph.GA2019★ 13 cited

A Radio-to-millimeter Census of Star-forming Galaxies in Protocluster 4C~23.56 at z = 2.5 : Global and local gas kinematics

Minju M. Lee, Ichi Tanaka, Ryohei Kawabe +12

We present a study of the gas kinematics of star-forming galaxies associated with protocluster 4C 23.56 at using resolution CO (4-3) data taken with ALMA. Eleven H…

astro-ph.GA2019★ 18 cited

Truth or delusion? A possible gravitational lensing interpretation of the ultra-luminous quasar SDSS J010013.02+280225.8 at

Seiji Fujimoto, Masamune Oguri, Tohru Nagao +2

Gravitational lensing sometimes dominates the observed properties of apparently very bright objects. We present morphological properties in the high-resolution (FWHM )…

astro-ph.GA2019★ 130 cited

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★ 7 cited

A NuSTAR and XMM-Newton Study of the Two Most Actively Star-forming Green Pea Galaxies (SDSS J0749+3337 and SDSS J0822+2241)

Taiki Kawamuro, Yoshihiro Ueda, Kohei Ichikawa +4

We explore X-ray evidence for the presence of active galactic nuclei (AGNs) in the two most actively star-forming Green Pea galaxies (GPs), SDSS J0749+3337 and SDSS J0822+2241, whi…

astro-ph.GA2019★ 71 cited

A nuclear molecular outflow in the Seyfert galaxy NGC3227

A. Alonso-Herrero, S. Garcia-Burillo, M. Pereira-Santaella +24

We present ALMA observations of the CO(2-1) and CO(3-2) molecular gas transitions and associated (sub)-mm continua of the nearby Seyfert 1.5 galaxy NGC3227 with angular resolutions…

astro-ph.GA2019★ 102 cited

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★ 130 cited

Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). VI. Black Hole Mass Measurements of Six Quasars at 6.1<z<6.7

Masafusa Onoue, Nobunari Kashikawa, Yoshiki Matsuoka +14

We present deep near-infrared spectroscopy of six quasars at 6.1<z<6.7 with VLT/X-Shooter and Gemini-N/GNIRS. Our objects, originally discovered through a wide-field optical survey…

astro-ph.GA2019★ 31 cited

A Chandra and ALMA Study of X-ray-irradiated Gas in the Central ~100 pc of the Circinus Galaxy

Taiki Kawamuro, Takuma Izumi, Masatoshi Imanishi

We report a study of X-ray-irradiated gas in the central ~100 pc of the Circinus galaxy, hosting a Compton-thick active galactic nucleus (AGN), at 10-pc resolution using Chandra an…

astro-ph.GA2019★ 26 cited

Black versus Dark: Rapid Growth of Supermassive Black Holes in Dark Matter Halos at z ~ 6

Kazuhiro Shimasaku, Takuma Izumi

We report on the relation between the mass of supermassive black holes (SMBHs; M_BH) and that of hosting dark matter halos (M_h) for 49 z ~ 6 quasi-stellar objects (QSOs) with [CII…

astro-ph.GA2019★ 38 cited

ALMA Spatially-resolved Dense Molecular Gas Survey of Nearby Ultraluminous Infrared Galaxies

Masatoshi Imanishi, Kouichiro Nakanishi, Takuma Izumi

We present the results of our ALMA HCN J=3-2 and HCO+ J=3-2 line observations of a uniformly selected sample (>25) of nearby ultraluminous infrared galaxies (ULIRGs) at z < 0.15. T…

astro-ph.GA2019★ 38 cited

The MBHBM* Project -- I: Measurement of the Central Black Hole Mass in Dwarf Galaxy NGC 3504 Using Molecular Gas Kinematics

Dieu D. Nguyen, Mark den Brok, Anil C. Seth +19

We present the first measurement of the mass of a supermassive black hole (SMBH) in the nearby double-barred spiral galaxy NGC 3504 as part of the Measuring Black Holes Below the M…

astro-ph.GA2019★ 169 cited

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.GA2019★ 37 cited

Hidden or missing outflows in highly obscured galaxy nuclei?

N. Falstad, F. Hallqvist, S. Aalto +19

Understanding the nuclear growth and feedback processes in galaxies requires investigating their often obscured central regions. One way to do this is to use (sub)millimeter line e…