output
19962026
most citedPlanck 2013 results. XVI. Cosmological parameters

6.6k citations

Showing 2018 · astro-ph.GAShow all

110 papers · 2 filters

astro-ph.GA2018★ 9 cited

Near-Infrared Survey and Photometric Redshifts in the Extended GOODS-North field

Li-Ting Hsu, Lihwai Lin, Mark Dickinson +22

We present deep and -band images in the extended Great Observatories Origins Deep Survey-North (GOODS-N) field covering an area of 0.22 . The observations were…

astro-ph.GA2018★ 4 cited

Halo Concentrations and the Fundamental Plane of Galaxy Clusters

Yutaka Fujita, Megan Donahue, Stefano Ettori +6

According to the standard cold dark matter (CDM) cosmology, the structure of dark halos including those of galaxy clusters reflects their mass accretion history. Older clusters ten…

astro-ph.GA2018★ 8 cited

Time Evolution of 3D Disk Formation with Misaligned Magnetic Field and Rotation Axes

Miikka S. Väisälä, Hsien Shang, Ruben Krasnopolsky +3

Distinguishing diagnostic observational signatures produced by MHD models is essential in understanding the physics for the formation of protostellar disks in the ALMA era. Develop…

astro-ph.GA2018★ 39 cited

Does the mid-infrared-hard X-ray luminosity relation for active galactic nuclei depend on Eddington ratio?

Yoshiki Toba, Yoshihiro Ueda, Kenta Matsuoka +5

We revisit the correlation between the mid-infrared (6 m) and hard X-ray (2--10 keV) luminosities of active galactic nuclei (AGNs) to understand the physics behind it. We constr…

astro-ph.GA2018

Dusty Superwind from a Galaxy with a Compact Obscured Nucleus: Optical Spectroscopic Study of NGC 4418

Youichi Ohyama, Kazushi Sakamoto, Susanne Aalto +1

We report our optical spectroscopic study of the nucleus and its surrounding region of a nearby luminous infrared galaxy NGC 4418. This galaxy has been known to host a compact obsc…

astro-ph.GA2018★ 54 cited

Anomalously low metallicity regions in MaNGA star-forming galaxies: Accretion Caught in Action?

Hsiang-Chih Hwang, Jorge K. Barrera-Ballesteros, Timothy M. Heckman +14

We use data from 1222 late-type star-forming galaxies in the SDSS IV MaNGA survey to identify regions in which the gas-phase metallicity is anomalously-low compared to expectations…

astro-ph.GA2018★ 22 cited

Molecular-Cloud-Scale Chemical Composition III: Constraints of Average Physical Properties through Chemical Models

Nanase Harada, Yuri Nishimura, Yoshimasa Watanabe +4

It is important to understand the origin of molecular line intensities and chemical composition in the molecular-cloud scale in the Galactic sources because it serves as a benchmar…

astro-ph.GA2018★ 39 cited

ALMA High Angular Resolution Polarization Study; An Extremely Young Class 0 Source, OMC-3/MMS 6

Satoko Takahashi, Masahiro N. Machida, Kohji Tomisaka +4

Using the 15km ALMA long baselines, we imaged the Stokes emission and linearly polarized intensity () in the 1.1-mm continuum band of a very young intermediate-mas…

astro-ph.GA2018★ 63 cited

JCMT BISTRO survey: Magnetic Fields within the Hub-Filament Structure in IC 5146

Jia-Wei Wang, Shih-Ping Lai, Chakali Eswaraiah +130

We present the 850 m polarization observations toward the IC5146 filamentary cloud taken using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) and its associated polar…

astro-ph.GA2018★ 28 cited

ALMA observations of the protostellar disk around the VeLLO IRAS 16253-2429

Tien-Hao Hsieh, Naomi Hirano, Arnaud Belloche +3

We present ALMA long-baseline observations toward the Class 0 protostar IRAS 16253-2429 (hereafter IRAS 16253) with a resolution down to 0.12" (~15 au). The 1.3 mm dust continuum e…

astro-ph.GA2018★ 13 cited

Micro-arcsecond structure of Sagittarius A* revealed by high-sensitivity 86 GHz VLBI observations

Christiaan D. Brinkerink, Cornelia Müller, Heino D. Falcke +21

The compact radio source Sagittarius~A (Sgr~A)in the Galactic Center is the primary supermassive black hole candidate. General relativistic magnetohydrodynamical (GRMHD) si…

astro-ph.GA2018★ 14 cited

Ratio of black hole to galaxy mass of an extremely red dust-obscured galaxy at z = 2.52

Kenta Matsuoka, Yoshiki Toba, Megumi Shidatsu +7

We present a near-infrared (NIR) spectrum of WISE J1042+1641, an extremely red dust-obscured galaxy (DOG), which has been observed with the LIRIS on the 4.2m William Hershel Telesc…

astro-ph.GA2018★ 27 cited

Discovery of Dying Active Galactic Nucleus in Arp 187: Experience of Drastic Luminosity Decline within years

Kohei Ichikawa, Junko Ueda, Hyun-Jin Bae +4

Arp 187 is one of the fading active galactic nuclei (AGN), whose AGN activity is currently decreasing in luminosity. We investigate the observational signatures of AGN in Arp 187,…

astro-ph.GA2018★ 224 cited

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

Yoshiki Matsuoka, Michael A. Strauss, Nobunari Kashikawa +44

We present new measurements of the quasar luminosity function (LF) at , over an unprecedentedly wide range of the rest-frame ultraviolet luminosity from …

astro-ph.GA2018★ 199 cited

The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2

G. Torrealba, V. Belokurov, S. E. Koposov +8

We report the discovery of a Milky Way satellite in the constellation of Antlia. The Antlia 2 dwarf galaxy is located behind the Galactic disc at a latitude of a…

astro-ph.GA2018★ 186 cited

ALMA observations of molecular tori around massive black holes

F. Combes, S. Garcia-Burillo, A. Audibert +12

We report ALMA observations of CO(3-2) emission in a sample of 7 Seyfert/LINER galaxies at the unprecedented spatial resolution of 0.1'' = 4-9 pc. Our aim is to explore the close e…

astro-ph.GA2018★ 75 cited

The Effect of Galaxy Interactions on Molecular Gas Properties

Hsi-An Pan, Lihwai Lin, Bau-Ching Hsieh +26

Galaxy interactions are often accompanied by an enhanced star formation rate (SFR). Since molecular gas is essential for star formation, it is vital to establish whether, and by ho…

astro-ph.GA2018★ 64 cited

Remodeling the evolution of grain size distribution in galaxies

Hiroyuki Hirashita, Shohei Aoyama

We revisit the evolution model of grain size distribution in a galaxy for the ultimate purpose of implementing it in hydrodynamical simulations. We simplify the previous model in s…

astro-ph.GA2018★ 33 cited

The relationship between dust and [CI] at z=1 and beyond

N. Bourne, J. S. Dunlop, J. M. Simpson +3

Measuring molecular gas mass is vital for understanding the evolution of galaxies at high redshifts (z1). Most measurements rely on CO as a tracer, but dependences on metalli…

astro-ph.GA2018★ 39 cited

RELICS: Strong Lensing Analysis of MACS J0417.5-1154 and Predictions for Observing the Magnified High-Redshift Universe with JWST

Guillaume Mahler, Keren Sharon, Carter Fox +37

Strong gravitational lensing by clusters of galaxies probes the mass distribution at the core of each cluster and magnifies the universe behind it. MACS J0417.5-1154 at z=0.443 is…

astro-ph.GA2018★ 193 cited

Titans of the Early Universe: The Prato Statement on the Origin of the First Supermassive Black Holes

Tyrone E. Woods, Bhaskar Agarwal, Volker Bromm +30

In recent years, the discovery of massive quasars at z~7 has provided a striking challenge to our understanding of the origin and growth of supermassive black holes in the early Un…

astro-ph.GA2018★ 152 cited

ALMA reveals potential evidence for spiral arms, bars, and rings in high-redshift submillimeter galaxies

J. A. Hodge, I. Smail, F. Walter +20

We present sub-kpc-scale mapping of the 870 m ALMA continuum emission in six luminous ( L) submillimeter galaxies (SMGs) from the ALES…

astro-ph.GA2018★ 28 cited

Physical properties and chemical composition of the cores in the California molecular cloud

Guo-Yin Zhang, Jin-Long Xu, A. I. Vasyunin +13

We aim to reveal the physical properties and chemical composition of the cores in the California molecular cloud (CMC), so as to better understand the initial conditions of star fo…

astro-ph.GA2018★ 48 cited

On the Effects of Self-Obscuration in the (Sub-)Millimeter Spectral Indices and Appearance of Protostellar Disks

Roberto Galván-Madrid, Hauyu Baobab Liu, Andrés F. Izquierdo +5

In this paper we explore the effects of self-obscuration in protostellar disks with a radially decreasing temperature gradient and a colder midplane. We are motivated by recent rep…