The theory of kinks - I. A semi-analytic model of velocity perturbations due to planet-disc interaction - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Monthly Notices of the Royal Astronomical Society Year : 2021

The theory of kinks - I. A semi-analytic model of velocity perturbations due to planet-disc interaction

Abstract

A new technique to detect protoplanets is by observing the kinematics of the surrounding gas. Gravitational perturbations from a planet produce peculiar 'kinks' in channel maps of different gas species. In this paper, we show that such kinks can be reproduced using semi-analytic models for the velocity perturbation induced by a planet. In doing so we (i) confirm that the observed kinks are consistent with the planet-induced wake; (ii) show how to quantify the planet mass from the kink amplitude; in particular, we show that the kink amplitude scales with the square root of the planet mass for channels far from the planet velocity, steepening to linear as the channels approach the planet; and (iii) show how to extend the theory to include the effect of damping, which may be needed in order to have localized kinks.
Fichier principal
Vignette du fichier
stab922.pdf (3.33 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03705292 , version 1 (14-04-2023)

Identifiers

Cite

Francesco Bollati, Giuseppe Lodato, Daniel J. Price, Christophe Pinte. The theory of kinks - I. A semi-analytic model of velocity perturbations due to planet-disc interaction. Monthly Notices of the Royal Astronomical Society, 2021, 504, pp.5444-5454. ⟨10.1093/mnras/stab1145⟩. ⟨insu-03705292⟩
44 View
13 Download

Altmetric

Share

Gmail Facebook X LinkedIn More