58 citations · 141 across the 11 of their papers we have counts for
12 papers
A Hybrid Origin for the Multiple Ring-Gap Structures in the Large Protoplanetary Disk V1094 Sco: A Low-Mass Planet and Secular Gravitational Instability
Masayuki Yamaguchi, Masahiro N. Machida, Ryosuke T. Tominaga +7
High spatial resolution observations reveal that some protoplanetary disks host multiple ring-gap pairs at large stellocentric radii, yet their physical origin remains unsettled. W…
Oxygen Isotopic Compositions of Chondrules as Probes of Solar Protoplanetary Disk Formation
Sota Arakawa, Takayuki Ushikubo, Ryosuke T. Tominaga
Chondrules are thought to have formed during transient flash-heating events in dust-enriched regions of the solar protoplanetary disk. Although laboratory studies have characterize…
Hydrodynamical simulations of the vertical shear instability with dynamic dust and cooling rates in protoplanetary disks
Yuya Fukuhara, Mario Flock, Satoshi Okuzumi +1
Turbulence in protoplanetary disks affects dust evolution and planetesimal formation. The vertical shear instability (VSI) is one of the candidate turbulence-driving mechanisms in…
Dust coagulation assisted by streaming instability in protoplanetary disks
Ryosuke T. Tominaga, Hidekazu Tanaka
The streaming instability is a promising mechanism for planetesimal formation. The instability can rapidly form dense clumps that collapse self-gravitationally, which is efficient…
Rapid Dust Growth During Hydrodynamic Clumping Due to Streaming Instability
Ryosuke T. Tominaga, Hidekazu Tanaka
Streaming instability is considered to be one of the dominant processes to promote planetesimal formation by gravitational collapse of dust clumps. The development of streaming ins…
On Secular Gravitational Instability in Vertically Stratified Disks
Ryosuke T. Tominaga, Shu-ichiro Inutsuka, Sanemichi Z. Takahashi
Secular gravitational instability (GI) is one promising mechanism for explaining planetesimal formation. The previous studies on secular GI utilized a razor-thin disk model and der…
Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks II: Dust Ring Formation Mediated by Backreaction and Fragmentation
Ryosuke T. Tominaga, Hidekazu Tanaka, Hiroshi Kobayashi +1
In our previous work (Paper I), we demonstrated that coagulation instability results in dust concentration against depletion due to the radial drift and accelerates dust growth loc…
Nonlinear Outcome of Coagulation Instability in Protoplanetary Disks I: First Numerical Study of Accelerated Dust Growth and Dust Concentration at Outer Radii
Ryosuke T. Tominaga, Hiroshi Kobayashi, Shu-ichiro Inutsuka
Our previous linear analysis presents a new instability driven by dust coagulation in protoplanetary disks. The coagulation instability has the potential to concentrate dust grains…
Coagulation Instability in Protoplanetary Disks: A Novel Mechanism Connecting Collisional Growth and Hydrodynamical Clumping of Dust Particles
Ryosuke T. Tominaga, Shu-ichiro Inutsuka, Hiroshi Kobayashi
We present a new instability driven by a combination of coagulation and radial drift of dust particles. We refer to this instability as ``coagulation instability" and regard it as…
Secular Gravitational Instability of Drifting Dust in Protoplanetary Disks: Formation of Dusty Rings without Significant Gas Substructures
Ryosuke T. Tominaga, Sanemichi Z. Takahashi, Shu-ichiro Inutsuka
Secular gravitational instability (GI) is one of the promising mechanisms for creating annular substructures and planetesimals in protoplanetary disks. We perform numerical simulat…
Revised description of dust diffusion and a new instability creating multiple rings in protoplanetary disks
Ryosuke T. Tominaga, Sanemichi Z. Takahashi, Shu-ichiro Inutsuka
Various instabilities have been proposed as a promising mechanism to accumulate dust. Moreover, some of them are expected to lead to the multiple-ring structure formation and the p…
Non-linear Development of Secular Gravitational Instability in Protoplanetary Disks
Ryosuke T. Tominaga, Shu-ichiro Inutsuka, Sanemichi Z. Takahashi
We perform non-linear simulation of secular gravitational instability (GI) in protoplanetary disks that has been proposed as a mechanism of the planetesimal formation and the multi…