Sculpting protoplanetary discs - modelling circumbinary cavities at observable scales with radiation hydrodynamics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F25%3A00646363" target="_blank" >RIV/67985815:90106/25:00646363 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1093/mnras/staf1876" target="_blank" >https://doi.org/10.1093/mnras/staf1876</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/staf1876" target="_blank" >10.1093/mnras/staf1876</a>

Result language

angličtina

Original language name

Sculpting protoplanetary discs - modelling circumbinary cavities at observable scales with radiation hydrodynamics

Original language description

Observations of circumbinary discs reveal inner cavities, with their shape and size varying strongly between different systems. The structure of the cavity is determined by the complex interplay between spirals induced by tidal forcing from the binary and the viscous and radiative damping of the spirals at the cavity edge. To fully understand what determines the properties of observed cavities, it is therefore necessary to capture the effect of radiative processes in modelling. To this end, we run 27 simulations of circumbinary discs in 2D using the PLUTO code. These simulations include various size scales, binary eccentricities and thermodynamic models. We find that the diverse cavity shapes are a natural outcome of the radially-varying cooling time-scale, as different radiative processes mediate cooling at different disc size regimes. For binaries with separation of a few au, where the cooling time-scale is comparable to the orbital time-scale at the cavity edge, we recover much more circular cavities than for quickly- or slowly-cooling discs. Our results show that the cavity structure around several binary systems such as Cs Cha and GG Tau can be explained with one physical model, and highlight the importance of radiative cooling in modelling the dynamical evolution of circumbinary discs.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

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Continuities

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Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

544

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

3312-3323

UT code for WoS article

001624246000001

EID of the result in the Scopus database

2-s2.0-105022807568