Skip to Main content Skip to Navigation
Journal articles

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.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03705292
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Monday, June 27, 2022 - 8:52:31 AM
Last modification on : Tuesday, August 2, 2022 - 3:10:43 AM

Links full text

Identifiers

Collections

Citation

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⟩

Share

Metrics

Record views

29