Search Results - "Muto, Takayuki"
-
1
Structure Formation in a Young Protoplanetary Disk by a Magnetic Disk Wind
Published in The Astrophysical journal (01-10-2018)“…Structure formation in young protoplanetary disks is investigated using a one-dimensional model including the formation and the evolution of disks. Recent…”
Get full text
Journal Article -
2
Unveiling Dust Aggregate Structure in Protoplanetary Disks by Millimeter-wave Scattering Polarization
Published in The Astrophysical journal (01-11-2019)“…Dust coagulation in a protoplanetary disk is the first step in planetesimal formation. However, the pathway from dust aggregates to planetesimals remains…”
Get full text
Journal Article -
3
PARAMETRIC STUDY OF THE ROSSBY WAVE INSTABILITY IN A TWO-DIMENSIONAL BAROTROPIC DISK
Published in The Astrophysical journal (01-06-2016)“…ABSTRACT Protoplanetary disks with non-axisymmetric structures have been observed. The Rossby wave instability (RWI) is considered as one of the origins of the…”
Get full text
Journal Article -
4
RADIAL TRANSPORT OF LARGE-SCALE MAGNETIC FIELDS IN ACCRETION DISKS. I. STEADY SOLUTIONS AND AN UPPER LIMIT ON THE VERTICAL FIELD STRENGTH
Published in The Astrophysical journal (20-04-2014)“…Large-scale magnetic fields are key ingredients of magnetically driven disk accretion. We study how large-scale poloidal fields evolve in accretion disks, with…”
Get full text
Journal Article -
5
Parametric Study of the Rossby Wave Instability in a Two-dimensional Barotropic Disk. II. Nonlinear Calculations
Published in The Astrophysical journal (01-09-2018)“…Vortices in protoplanetary disks have attracted attention since the discovery of lopsided structures. One of the possible mechanisms for producing vortices is…”
Get full text
Journal Article -
6
The Eccentric Cavity, Triple Rings, Two-armed Spirals, and Double Clumps of the MWC 758 Disk
Published in The Astrophysical journal (20-06-2018)“…Spatially resolved structures in protoplanetary disks hint at unseen planets. Previous imaging observations of the transitional disk around MWC 758 revealed an…”
Get full text
Journal Article -
7
-
8
Two Different Grain Size Distributions within the Protoplanetary Disk around HD 142527 Revealed by ALMA Polarization Observation
Published in The Astrophysical journal (01-09-2018)“…The origin of polarized emission from protoplanetary disks is uncertain. Three mechanisms have been proposed for this polarized emission: grain alignment with…”
Get full text
Journal Article -
9
Mass constraint for a planet in a protoplanetary disk from the gap width
Published in Publications of the Astronomical Society of Japan (01-06-2016)“…A giant planet creates a gap in a protoplanetary disk, which might explain the observed gaps in protoplanetary disks. The width and depth of the gaps depend on…”
Get full text
Journal Article -
10
Dust Rings as a Footprint of Planet Formation in a Protoplanetary Disk
Published in The Astrophysical journal (01-11-2021)“…Abstract Relatively large dust grains (referred to as pebbles) accumulate at the outer edge of the gap induced by a planet in a protoplanetary disk, and a ring…”
Get full text
Journal Article -
11
Effect of Dust Radial Drift on Viscous Evolution of Gaseous Disk
Published in The Astrophysical journal (01-08-2017)“…The total amount of dust (or "metallicity") and the dust distribution in protoplanetary disks are crucial for planet formation. Dust grains radially drift…”
Get full text
Journal Article -
12
The Water-ice Feature in Near-infrared Disk-scattered Light around HD 142527: Micron-sized Icy Grains Lifted up to the Disk Surface?
Published in The Astrophysical journal (01-11-2021)“…Abstract We study the 3 μ m scattering feature of water ice detected in the outer disk of HD 142527 by performing radiative transfer simulations. We show that…”
Get full text
Journal Article -
13
ALMA Observations of the Asymmetric Dust Disk around DM Tau
Published in The Astrophysical journal (01-04-2021)“…Abstract We report an analysis of the dust disk around DM Tau, newly observed with the Atacama Large Millimeter/submillimeter Array (ALMA) at 1.3 mm. The ALMA…”
Get full text
Journal Article -
14
Impacts of Dust Feedback on a Dust Ring Induced by a Planet in a Protoplanetary Disk
Published in The Astrophysical journal (20-11-2018)“…When a planet forms a deep gap in a protoplanetary disk, dust grains cannot pass through the gap. As a consequence, the density of the dust grains can increase…”
Get full text
Journal Article -
15
First JVLA Radio Observation on PDS 70
Published in The Astrophysical journal (01-09-2024)“…Abstract PDS 70 is a protoplanetary system that hosts two actively accreting gas giants, namely, PDS 70b and PDS 70 c. The system has a ∼60–100 au dusty ring…”
Get full text
Journal Article -
16
Centimeter-sized Grains in the Compact Dust Ring around Very-low-mass Star CIDA 1
Published in The Astronomical journal (01-11-2023)“…Abstract We examined the grain size in the dust ring encircling the 0.19 M ☉ T Tauri star CIDA 1 using the Karl G. Jansky Very Large Array at multiple…”
Get full text
Journal Article -
17
Shadowing in the Protoplanetary Disk of ZZ Tau IRS with HST
Published in The Astronomical journal (01-02-2024)“…Abstract An inner component misaligned from an outer component in a protoplanetary disk can result in the former casting shadows on the latter. We present a…”
Get full text
Journal Article -
18
Protoplanetary Disk Winds via Magnetorotational Instability: Formation of an Inner Hole and a Crucial Assist for Planet Formation
Published in The Astrophysical journal (01-08-2010)“…By constructing a global model based on three-dimensional local magnetohydrodynamical simulations, we show that the disk wind driven by magnetorotational…”
Get full text
Journal Article -
19
Planet Formation in AB Aurigae: Imaging of the Inner Gaseous Spirals Observed inside the Dust Cavity
Published in The Astrophysical journal (01-05-2017)“…We report the results of ALMA observations of a protoplanetary disk surrounding the Herbig Ae star AB Aurigae. We obtained high-resolution (0 1; 14 au) images…”
Get full text
Journal Article -
20
The Synthetic ALMA Multiband Analysis of the Dust Properties of the TW Hya Protoplanetary Disk
Published in The Astrophysical journal (20-02-2019)“…Analyzing multiband observations of dust continuum emission is one of the useful tools to constrain dust properties that help us to understand the physical…”
Get full text
Journal Article