Catastrophic Events in Protoplanetary Disks and Their Observational Manifestations

Abstract

Observations of protoplanetary disks with high angular resolution using an ALMA interferometer showed that ring-shaped structures are often visible in their images, indicating strong disturbances in the disks. The mechanisms of their formation are vividly discussed in the literature. This article shows that the formation of such structures can be the result of destructive collisions of large bodies (planetesimals and planetary embryos) accompanied by the formation of a large number of dust particles, and the subsequent evolution of a cloud of dust formed in this way.

Clumpy Accretion in Pre-main-sequence Stars as a Source of Perturbations in Circumstellar Disks

“…A number of papers are devoted to theoretical studies of the formation of such structures. Their formation is associated with perturbations in the disks caused by the motion of the forming planets (e.g., Ruge et al 2013;Dong et al 2015;van der Marel et al 2015;Jin et al 2016;Demidova & Shevchenko 2016;Dong et al 2018), the development of various kinds of instabilities in the disks (e.g., Johansen et al 2009;Takahashi & Inutsuka 2014;Bai & Stone 2014;Birnstiel et al 2015;Banzatti et al 2015;Zhang et al 2015;Okuzumi et al 2016;Dullemond & Penzlin 2018), a large-scale vertical magnetic field (Suriano et al 2018), or with the destruction of large bodies in collision (Demidova & Grinin 2019;Nayakshin et al 2020). In all of these papers, the source of disturbance is in the disk itself.…”

Clumpy accretion in pre-main-sequence stars as a source of perturbations in circumstellar disks

“…A number of papers are devoted to theoretical studies of the formation of such structures. Their formation is associated with perturbations in the disks caused by the motion of the forming planets (e.g., Ruge et al 2013;van der Marel et al 2015;Dong et al 2015;Demidova & Shevchenko 2016;Jin et al 2016;Dong et al 2018), the development of various kinds of instabilities in the disks (e.g., Banzatti et al 2015;Zhang et al 2015;Birnstiel et al 2015;Okuzumi et al 2016;Johansen et al 2009;Bai & Stone 2014;Takahashi & Inutsuka 2014;Dullemond & Penzlin 2018), a large scale vertical magnetic field (Suriano et al 2018) or with the destruction of large bodies in collisions (Demidova & Grinin 2019;Nayakshin et al 2020). In all these papers, the source of disturbance is in the disk itself.…”