Detailed Information on Publication Record
2024
Inner dusty regions of protoplanetary discs - III. The role of non-radial radiation pressure in dust dynamics
VINKOVIC, Dejan and Miljenko ČEMELJIĆBasic information
Original name
Inner dusty regions of protoplanetary discs - III. The role of non-radial radiation pressure in dust dynamics
Authors
VINKOVIC, Dejan and Miljenko ČEMELJIĆ (191 Croatia, belonging to the institution)
Edition
Monthly Notices of the Royal Astronomical Society, US - Spojené státy americké, 2024, 0035-8711
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.800 in 2022
Organization unit
Institute of physics in Opava
UT WoS
001271732700003
Keywords in English
magnetic fields;MHD;formation; pre-main sequence
Tags
Tags
International impact, Reviewed
Links
GX21-06825X, research and development project.
Změněno: 4/2/2025 10:12, Mgr. Pavlína Jalůvková
Abstract
V originále
We explore the dynamical behaviour of dust particles that populate the surface of inner optically thick protoplanetary discs. This is a disc region with the hottest dust and is of a great importance for planet formation and dust evolution, but we still struggle to understand all the forces that shape this environment. In our approach, we combine results from two separate numerical studies, one is the wind velocity and density distributions obtained from magnetohydrodynamical simulations of accretion discs, and the other is a high-resolution multigrain dust radiation transfer. In our previous paper in the series, we described the methodology for utilizing these results as an environmental input for the integration of dust trajectories driven by gravity, gas drag, and radiation pressure. Now we have two improvements, we incorporate time changes in the wind density and velocity, and we implement the non-radial radiation pressure force. We applied our analysis on the Herbig Ae and T Tau stars. We confirm that the radiation pressure force can lead to dust outflow, especially in the case of more luminous stars. Additionally, it opposes dust accretion at the inner disc edge and reduces dust settling. These effects are enhanced by the disc wind, especially in the zone where the stellar and the disc magnetic fields meet. Our results suggest that dust grains can stay in the hottest disc region for an extended period and then end up ejected into the outer disc regions.