English
Related papers

Related papers: Dust entrainment in magnetically and thermally dri…

200 papers

We study the launching of magnetized jets from a resistive circumstellar disk within a binary system, employing a unique combination of 3D MHD jet launching simulations (PLUTO code) and post-processed 3D radiative transfer modeling…

High Energy Astrophysical Phenomena · Physics 2025-04-16 Somayeh Sheikhnezami , Christian Fendt , Sareh Ataiee

The purpose of this work is to present an extensive grid of dynamical atmosphere and wind models for M-type AGB stars, covering a wide range of relevant stellar parameters. We used the DARWIN code, which includes frequency-dependent…

Solar and Stellar Astrophysics · Physics 2019-07-10 S. Bladh , S. Liljegren , S. Höfner , B. Aringer , P. Marigo

The long-term evolution of a circumstellar disk starting from its formation and ending in the T Tauri phase was simulated numerically with the purpose of studying the evolution of dust in the disk with distinct values of viscous…

Earth and Planetary Astrophysics · Physics 2018-07-04 Eduard Vorobyov , Vitaly Akimkin , Olga Stoyanovskaya , Yaroslav Pavlyuchenkov , Hauyu Baobab Liu

The characteristics of Alfv\'en waves propagating in a direction oblique to the ambient magnetic field in a stellar wind environment are discussed. A kinetic formulation for a magnetized dusty plasma is adopted considering Maxwellian…

Plasma Physics · Physics 2022-03-22 L. B. De Toni , R. Gaelzer , L. F. Ziebell

We present an analytic model in which an inefficiently radiating accretion disk drives upward wind from its surfaces. The accretion process is controlled simultaneously by a global magnetic field penetrating the disk and by a viscosity of…

Astrophysics · Physics 2009-11-07 Daizo Maruta , Osamu Kaburaki

Aims: We investigate the evolution of protoplanetary discs (PPDs hereafter) with magnetically driven disc winds and viscous heating. Methods: We consider an initially massive disc with ~0.1 Msun to track the evolution from the early stage…

Earth and Planetary Astrophysics · Physics 2016-12-07 Takeru K. Suzuki , Masahiro Ogihara , Alessandro Morbidelli , Aurélien Crida , Tristan Guillot

Aims: Grain growth has been suggested as one possible explanation for the diminished dust optical depths in the inner regions of protoplanetary "transition" disks. In this work, we directly test this hypothesis in the context of current…

Solar and Stellar Astrophysics · Physics 2012-06-28 T. Birnstiel , S. M. Andrews , B. Ercolano

Our goal is to measure and model the magnetic field distribution in the disk wind of the young stellar object (YSO) IRAS 21078+5211. We performed sensitive global Very Long Baseline Interferometry observations of the polarized emission of…

Solar and Stellar Astrophysics · Physics 2023-12-20 Luca Moscadelli , André Oliva , Gabriele Surcis , Alberto Sanna , Maria Teresa Beltrán , Rolf Kuiper

We present a series of simulations of turbulent stratified protostellar discs with the goal of characterizing the settling of dust throughout a minimum-mass solar nebula. We compare the evolution of both compact spherical grains, as well as…

Astrophysics of Galaxies · Physics 2015-05-14 D. A. Tilley , D. S. Balsara , S. D. Brittain , T. Rettig

We discuss recent progress in understanding the launching of outflows/jets from the disc-magnetosphere boundary of slowly and rapidly rotating magnetized stars. In most of the discussed models the interior of the disc is assumed to have a…

Solar and Stellar Astrophysics · Physics 2013-06-06 R. V. E. Lovelace , M. M. Romanova , P. Lii

Protostellar systems, ranging from low-luminosity T Tauri and Herbig Ae stars to high-luminosity Herbig Be stars, exhibit a near-infrared (NIR) excess in their spectra that is dominated by a bump in the monochromatic luminosity with a peak…

Solar and Stellar Astrophysics · Physics 2015-06-05 Alissa Bans , Arieh Konigl

This work is part of an ongoing effort aiming at identifying the actual wind-drivers among the dust species observed in circumstellar envelopes. In particular, we focus on the interplay between a strong stellar radiation field and the dust…

Solar and Stellar Astrophysics · Physics 2013-02-27 Sara Bladh , Susanne Höfner

It has been considered that large satellites around gas planets form in-situ circumplanetary discs (CPDs). However, dust particles supplied into CPDs drift toward the central planets before they grow into satellitesimals, building blocks of…

Earth and Planetary Astrophysics · Physics 2022-12-12 Yuhito Shibaike , Shoji Mori

Infrared spectroscopy, e.g., with JWST, provides a glimpse into the chemical inventory of the innermost region of protoplanetary discs, where terrestrial planets eventually form. The chemical make-up of regions inside snowlines is connected…

We study the two-dimensional, time-dependent MHD of radiation-driven winds from luminous accretion disks initially threaded by a purely axial magnetic field. The radiation force is mediated primarily by spectral lines. We use ideal MHD to…

Astrophysics · Physics 2009-11-07 D. Proga

Observations of protoplanetary disks suggest that the gas and dust follow significantly different radial distributions. This finding can be theoretically explained by a combination of radial drift and gas drag of intermediate-sized dust…

Solar and Stellar Astrophysics · Physics 2016-01-13 L. Ilsedore Cleeves

We investigate the dynamics of large dust grains in massive lopsided transition discs via 2D hydrodynamical simulations including both gas and dust. Our simulations adopt a ring-like gas density profile that becomes unstable against the…

Earth and Planetary Astrophysics · Physics 2016-05-04 Clément Baruteau , Zhaohuan Zhu

The rapid depletion of dust particles in protoplanetary disks limits the time available for planetesimal formation, as solids are typically accreted onto the central star before dust particles can undergo substantial growth. Dust traps…

Earth and Planetary Astrophysics · Physics 2026-01-06 D. Tarczay-Nehéz

Over two hundred protoplanetary disk systems have been resolved by ALMA, and the vast majority suggest the presence of planets. The dust gaps in transition disks are considered evidence of giant planets sculpting gas and dust under…

Earth and Planetary Astrophysics · Physics 2024-06-05 Yinhao Wu

We present a new SMA survey of 47 Class II sources in the Taurus-Auriga region. Our observations made 12 independent samples of flux densities over the 200-400 GHz frequency range. We tightly constrained the spectral indices of most sources…

Earth and Planetary Astrophysics · Physics 2024-05-31 Chia-Ying Chung , Sean M. Andrews , Mark A. Gurwell , Melvyn Wright , Feng Long , Wenrui Xu , Hauyu Baobab Liu