English
Related papers

Related papers: Evolution of Protoplanetary Discs with Magneticall…

200 papers

Disc winds and planet-disc interactions are two crucial mechanisms that define the structure, evolution and dispersal of protoplanetary discs. While winds are capable of removing material from discs, eventually leading to their dispersal,…

Earth and Planetary Astrophysics · Physics 2024-05-29 Michael L. Weber , Giovanni Picogna , Barbara Ercolano

A magnetic disc wind is an important mechanism that may be responsible for driving accretion and structure formation in protoplanetary discs. Recent numerical simulations have shown that these winds can take either the traditional…

Earth and Planetary Astrophysics · Physics 2020-08-19 Philip Kwong Ching Leung , Gordon I. Ogilvie

We present Green's function solutions for a geometrically thin, one-dimensional Keplerian accretion disk that includes angular momentum extraction and mass loss due to magnetohydrodynamic (MHD) winds. The disk viscosity is assumed to vary…

High Energy Astrophysical Phenomena · Physics 2026-01-01 Mageshwaran Tamilan

In this article, we proceed to study convection as a possible factor of episodic accretion in protoplanetary disks. Within the model presented in Article~I, the accretion history is analyzed at different rates and areas of matter inflow…

Solar and Stellar Astrophysics · Physics 2020-09-17 L. A. Maksimova , Ya. N. Pavlyuchenkov , A. V. Tutukov

Proto-planetary disc surveys conducted with ALMA are measuring disc radii in multiple star forming regions. The disc radius is a fundamental quantity to diagnose whether discs undergo viscous spreading, discriminating between viscosity or…

Earth and Planetary Astrophysics · Physics 2019-05-08 Giovanni P. Rosotti , Marco Tazzari , Richard A. Booth , Leonardo Testi , Giuseppe Lodato , Cathie Clarke

We cannot understand planet formation without understanding disc evolutionary processes. However, there is currently ambiguity about how protoplanetary discs transport angular momentum (e.g. via viscosity or winds) and the relative…

Earth and Planetary Astrophysics · Physics 2025-12-17 Gavin A. L. Coleman , Thomas J. Haworth , Ilane Schroetter , Olivier Berné

Protoplanetary disks form through angular momentum conservation in collapsing dense cores. In this work, we perform the first simulations with a maximal resolution down to the astronomical unit (au) of protoplanetary disk formation, through…

Migration of giant planets in discs with low viscosity has been studied recently. The proportionality between migration speed and the disc's viscosity is broken by the presence of vortices that appear at the edges of the planet-induced gap.…

Earth and Planetary Astrophysics · Physics 2022-02-02 E. Lega , A. Morbidelli , R. P. Nelson , X. S. Ramos , A. Crida , W. Bethune , K. Batygin

The formation of planets with gaseous envelopes takes place in protoplanetary accretion discs on time-scales of several millions of years. Small dust particles stick to each other to form pebbles, pebbles concentrate in the turbulent flow…

Earth and Planetary Astrophysics · Physics 2015-02-25 Bertram Bitsch , Anders Johansen , Michiel Lambrechts , Alessandro Morbidelli

We conduct simulations of the inner regions of protoplanetary disks (PPDs) to investigate the effects of protostellar magnetic fields on their long-term evolution. We use an inner boundary model that incorporates the influence of a stellar…

Solar and Stellar Astrophysics · Physics 2021-12-01 D. Steiner , L. Gehrig , B. W. Ratschiner , F. Ragossnig , E. I. Vorobyov , M. Güdel , E. A. Dorfi

We use one-dimensional two-zone time-dependent accretion disk models to study the long-term evolution of protostellar disks subject to mass addition from the collapse of a rotating cloud core. Our model consists of a constant surface…

Solar and Stellar Astrophysics · Physics 2015-05-18 Zhaohuan Zhu , Lee Hartmann , Charles Gammie

We explore in situ formation and subsequent evolution of close-in super-Earths and mini-Neptunes. We adopt a steady-state inner protoplanetary gas disc structure that arises from viscous accretion due to the magneto-rotational instability…

Solar and Stellar Astrophysics · Physics 2019-01-16 Marija R. Jankovic , James E. Owen , Subhanjoy Mohanty

We investigate outflows driven by a giant protoplanet using three-dimensional MHD nested grid simulations. We consider a local region around the protoplanet in the protoplanetary disk, and calculate three models: (a) unmagnetized disk…

Astrophysics · Physics 2011-02-11 Masahiro N. Machida , Shu-ichiro Inutsuka , Tomoaki Matsumoto

We present a one-dimensional model of the formation and viscous evolution of protoplanetary disks. The formation of the early disk is modeled as the result of the gravitational collapse of an isothermal molecular cloud. The disk's viscous…

Astrophysics · Physics 2009-11-11 Ricardo Hueso , Tristan Guillot

Mass transfer from an evolved donor star to its binary companion is a standard feature of stellar evolution in binaries. In wide binaries, the companion star captures some of the mass ejected in a wind by the primary star. The captured…

Solar and Stellar Astrophysics · Physics 2015-06-04 Hagai B. Perets , Scott J. Kenyon

We investigate under what circumstances an embedded planet in a protoplanetary disc may sculpt the dust distribution such that it observationally presents as a `transition' disc. We concern ourselves with `transition' discs that have large…

Earth and Planetary Astrophysics · Physics 2015-06-19 James E. Owen

Gas giant planets may form early-on during the evolution of protostellar discs, while these are relatively massive. We study how Jupiter-mass planet-seeds (termed protoplanets) evolve in massive, but gravitationally stable (Q>1.5), discs…

Earth and Planetary Astrophysics · Physics 2018-04-18 Dimitris Stamatellos , Shu-ichiro Inutsuka

In this paper, we compare simple viscous diffusion models for the disc evolution with the results of recent surveys of the properties of young protoplanetary discs. We introduce the useful concept of `disc isochrones' in the accretion rate…

Solar and Stellar Astrophysics · Physics 2017-10-18 Giuseppe Lodato , Chiara E. Scardoni , Carlo F. Manara , Leonardo Testi

In order to explain the main characteristics of the observed population of extrasolar planets and the giant planets in the Solar System, we need to get a clear understanding of which are the initial conditions that allowed their formation.…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yamila Miguel , Octavio M. Guilera , Adrián Brunini

Current theories on planetary formation establish that giant planet formation should be contextual to their quick migration towards the central star due to the protoplanets-disc interactions on a timescale of the order of $10^5$ years, for…

Earth and Planetary Astrophysics · Physics 2014-02-04 Vincenzo Costa , Valerio Pirronello , Gaetano Belvedere , Antonino Del Popolo , Diego Molteni , Giuseppe Lanzafame
‹ Prev 1 4 5 6 7 8 10 Next ›